Airworthiness directives: General Electric Co.,

[Federal Register: December 19, 2002 (Volume 67, Number 244)]

[Rules and Regulations]

[Page 77653-77666]

From the Federal Register Online via GPO Access [wais.access.gpo.gov]

[DOCID:fr19de02-2]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2001-NE-26-AD; Amendment 39-12984; AD 2002-25-08]

RIN 2120-AA64

Airworthiness Directives; General Electric Company (GE) CF6-45, - 50, -80A, -80C2, and -80E1 Turbofan Engines

AGENCY: Federal Aviation Administration, DOT.

ACTION: Final rule.

SUMMARY: This amendment supersedes three existing airworthiness directives (AD's), that are applicable to GE CF6-45, -50, -80A, -80C2, and -80E1 turbofan engines. Those AD's currently require specific handling of the GE CF6 series high pressure compressor rotor (HPCR) stage 3-9 spools during a fluorescent penetrant inspection process, and initial and repetitive ultrasonic and eddy current inspections of certain HPCR stage 3-9 spools for cracks. This amendment removes the AD that requires special handling of the spools during fluorescent- penetrant inspection, and adjusts and combines the initial and repetitive inspection requirements, currently listed in two AD's, into one AD for the HPCR stage 3-9 spool. This amendment aligns repetitive inspection requirements with the more stringent initial inspection requirements mandated by AD 2000-16-12, Amendment 39-11868 (65 FR 50623, August 21, 2000) and terminates AD 95-18-14, Amendment 39-9361 (60 FR 46216, September 6, 1995) that is no longer necessary. The actions specified by this AD are intended to prevent cracks, which can cause separation of the HPCR stage 3-9 spool and possible uncontained engine failure.

DATES: Effective January 23, 2003. The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of January 23, 2003.

ADDRESSES: The service information referenced in this AD may be obtained from General Electric Company via Lockheed Martin Technology Services, 10525 Chester Road, Suite C, Cincinnati, Ohio 45215, telephone (513) 672-8400, fax (513) 672-8422. This information may be examined, by appointment, at the Federal Aviation Administration (FAA), New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC.

FOR FURTHER INFORMATION CONTACT: Chris Gavriel, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803-5299; telephone (781) 238-7147; fax (781) 238-7199.

SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) by superseding AD 95-18-14, Amendment 39-9361 (60 FR 46216, September 6, 1995); AD 99-24-15, Amendment 39-11440 (64 FR 66554, November 29, 1999); and AD 2000-16-12, Amendment 39-11868 (65 FR 50623, August 21, 2000); which are applicable to GE CF6-45, -50, -80A, -80C2, and -80E1 turbofan engines, was published in the Federal Register on June 12, 2002, (67 FR 40239). That action proposed to combine the requirements of AD 99-24-15 and AD 2000- 16-12 with the following additional changes to:

[sbull] Adopt the accelerated initial inspection requirements of AD 2000-16-12 to spools acquiring 7,000 cycles-since-new (CSN) or more in service after July 28, 2001,

[sbull] Relax initial compliance requirement for the CF6-45, -50, and CF6-80A 13-inch billet spools to make them consistent with 9 and 10-inch billet spools,

[sbull] Add repetitive inspection requirements to the existing one- time inspection requirement for the CF6-80C and -80E series engine spool web and hub-to-web transition areas,

[sbull] Replace engine shop visit inspection threshold limits for certain spools with cyclic limits,

[sbull] Add a time limit for slot bottom inspection for 13-inch billet spools for CF6-45, -50, -80A engines and for 9-inch and 10-inch billet spools for CF6-45, -50, -80A, and -80C engines,

[sbull] Add a time limit for the initial inspection and add repeat inspection intervals for stage 3-5 slot bottom inspection for certain spools,

[sbull] Add a time limit for one-time inspection of 8-inch billet 2-piece spools, and

[sbull] Provide for an alternative modular inspection for the slot bottoms.

[[Page 77654]]

The action was prompted by a report of an uncontained failure of an HPCR 3-9 spool.

The inspections must be done in accordance with the following GE alert service bulletins (ASB's):

[sbull] ASB GE CF6-50 S/B 72-A1108, Revision 5, dated October 2, 2002.

[sbull] ASB GE CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002.

[sbull] ASB GE CF6-50 S/B 72-A1157, Revision 4, dated October 2, 2002.

[sbull] ASB GE CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002.

[sbull] ASB GE CF6-80A S/B 72-A0691, Revision 5, dated October 2, 2002.

[sbull] ASB GE CF6-80A S/B 72-A0719, Revision 5, dated October 2, 2002.

[sbull] ASB GE CF6-80C2 S/B 72-A0812, Revision 4, dated October 2, 2002.

[sbull] ASB GE CF6-80C2 S/B 72-A0848, Revision 8, dated October 2, 2002.

[sbull] ASB GE CF6-80C2 S/B 72-A0934, Revision 4, dated October 2, 2002.

[sbull] ASB GE CF6-80E1 S/B 72-A0135, Revision 3, dated October 2, 2002.

[sbull] ASB GE CF6-80E1 S/B 72-A0126, Revision 5, dated October 2, 2002.

[sbull] ASB GE CF6-80E1 S/B 72-A0137, Revision 4, dated October 2, 2002.

Comments

Interested persons have been afforded an opportunity to participate in the making of this amendment. Due consideration has been given to the comments received.

Web Inspection May Require Unscheduled Removals of Engines

Several commenters state that inspection of the web per Alert Service Bulletin 72-A0848, after January 27, 2003, at 3,500 CSN is a decrease from inspection requirements prior to that date. The commenters feel that this requirement will force operators to remove engines off wing to do the inspection in order to comply with this proposed AD.

The FAA agrees. Based on information received from several commenters, this requirement will have an adverse economic and operational impact on several operators. We have reviewed a risk analysis that includes an extension of the web inspection requirement by six months, relative to the date proposed in the NPRM, and find that the new risk is still acceptable under the guidelines appropriate for this type of failure. As a result, the requirement has been extended by six months.

Request To Add a FAX Number for the Reporting Requirements

One commenter requests that a FAX number be added to the reporting requirements. Due to time differences around the world, the time allotted for reporting may not be sufficient for other means of communication

The FAA agrees. We have added a facsimile number to the reporting requirements.

Request To Make Editorial Changes to Wording in the Requirements of the AD

One commenter requests certain word changes, such as replacing ``by'' with ``at'', replacing ``within'' with ``before'', etc., and adding certain paragraph headings. These changes are requested to make the AD requirements consistent and more understandable.

The FAA partially agrees. We consider the consistency of wording and the readability of the requirements of the AD to be of highest concern. However, we also feel that many of the suggested changes are stylistic and do not affect the technical accuracy or readability of the AD. We have made some of the requested changes to ensure consistency among the requirements and to improve the readability of the requirements of the AD.

Requested Corrections to CF6-50 8-Inch Requirements

Several commenters request that the title for paragraph (d) be corrected from ``CF6-508-inch'' to ``CF6-50 8-inch.'' The same commenters also request that the FAA correct service bulletin identifications in paragraphs (f), (g), and (j).

The FAA agrees. The title for paragraph (d) and the service bulletin numbers in paragraphs (f), (g), and (j) have been corrected.

Request To Change the Definition of an Engine Shop Visit

Several commenters request that the definition of an engine shop visit be changed to exclude compressor top and bottom case removals for variable stator vane bushing replacements. The commenters feel the inclusion was made to add another condition to the conditions already identified as not constituting engine shop visits (ESV's).

The FAA agrees. We have changed the ESV definition paragraph to exclude the induction of an engine into the shop for the purpose of replacing the variable stator vane bushing.

Requested Clarification of the Requirements for Reinstallation of CF6- 50 Spools

One commenter feels that further explanation on the meaning of paragraph (c)(7) is needed.

The FAA agrees. Addition of a heading ``Spool Reinstallation Limit'' in this paragraph helps in clarifying the intent of this paragraph. Furthermore, as the paragraph states, an engine with a spool that has 10,500 CSN or more may not be installed (i.e. returned to service). The paragraph does not require the removal of an installed engine that has a spool with 10,500 CSN or more.

Request To Clarify Paragraph (a)(3)(ii) of This AD

One commenter requests clarification of paragraph (a)(3)(ii). The commenter feels that paragraph (a)(3)(ii) is necessary to do paragraphs (a)(3)(i) and (a)(3)(iii). The commenter feels that paragraphs (a)(3)(i) and (a)(3)(iii) are redundant to (a)(3)(ii) and can be deleted to simplify the requirements.

The FAA does not agree with deleting paragraphs (a)(3)(i) and (a)(3)(iii). A spool that is exposed as a piece part (paragraph (a)(3)(i)) is also exposed as a rotor (paragraph (a)(3)(ii)). Likewise, a spool that requires a hub inspection in accordance with ASB CF6-50 S/ B 72-A1108 hub inspection (paragraph (a)(3)(iii)) must be exposed at least to a rotor level {(a)(3)(ii){time} in order to do a module level inspection. In this sense, (a)(3)(i) and (a)(3)(iii) are redundant to (a)(3)(ii). However, each condition represents a common but distinct and different level of planned engine maintenance, therefore it was advisable to address each condition specifically for clarity.

Request To Clarify That Paragraph (a)(4)(iii) Is Correct

One commenter requests that the FAA verify that paragraph (a)(4)(iii) and Table 5 are correct. The commenter feels that Table 5 of the AD causes a jump in the inspection interval. The commenter provides a correction to Table 5 of the AD to correct a perceived error in that Table.

The FAA has not been able to confirm the commenter's findings. The cyclic intervals for the Table 5 requirements are A; 3,500 cycles, B; 3,000 cycles, C; 3,000 cycles, D; 2,500 cycles, E; 2,500 cycles, F; 2,000 cycles, and G; 2,000 cycles. These intervals are as intended.

Concern About Misinterpretation of the Inspection Deadline

One commenter states that one of the requirements of this proposed rule may be misread as extending the inspection deadline of AD 2000-16- 12 to beyond July 28, 2001. The commenter also suggests that if all the high-risk spools have been inspected, the proposed rule should be expedited, since one year has passed since the deadline of AD 2000-16- 12.

[[Page 77655]]

The FAA agrees with the commenter on the need to expedite issuance of this AD. While the statement in the Discussion Section of the preamble of the proposal may be misinterpreted, the preamble is not regulatory and in fact, even the structure of the preamble changes when an NPRM is converted into a final rule. However, we have made changes to the statement in the Supplementary Information section to clarify the intent of this final rule. The intent of the proposed rule is to apply the same requirement on the population of the spools that would acquire 7,000 CSN after July 28, 2001. In regard to the comment inquiring if all spools have been inspected, we are not aware of any spool with 7,000 CSN or more that has not been inspected as required by AD 2000-16-12.

Request To Include Fluorescent Penetrant Inspection (FPI) Requirements

One commenter suggests that AD 95-18-14 that addresses FPI of the 3-9 spool should be included, since Standard Practices are only a suggestion and not a law. The commenter makes this comment out of concern that under this proposed rule the benefit of an additional inspection is eliminated.

The FAA does not agree. The requirements promulgated by AD 95-18-14 ensure that a spool is properly wetted internally prior to the FPI. Although FPI of the 3-9 spool is desired for the areas not affected by this AD, FPI is not the best technique for the inspection program established by this AD. While FPI is effective only for detection of surface cracks, the combination of ultrasonic and eddy current inspections required by this AD provide both surface and subsurface inspections that are of equal or greater sensitivity than FPI. The FPI required by AD 95-18-14 was an emergency measure instituted in 1995 after discovery of cracking in the disk web area, an area not then covered by ultrasonic and eddy current inspections. These inspection methods were subsequently developed and incorporated into the inspection plan. Additionally, AD 95-18-14 did not prescribe inspection intervals, only inspection techniques, therefore, the benefit of AD 95- 18-14 was not considered in the risk analysis associated with the current AD's.

Additional Spool Part Numbers (P/N's) as a Result of Unrelated Repairs

One commenter expresses a concern that additional spool P/N's, which have been generated due to unrelated repairs on spools that are subject to the inspection requirements of this AD, are not being captured by the AD. The commenter feels that these P/N's should be added to the AD. The commenter raises this issue to ensure that spools with P/N's that were not included in the proposed rule are not excluded from this inspection program.

The FAA agrees. The new P/N's will be incorporated in this AD. However, their incorporation does not increase the originally affected spool population size.

New Revisions to the Applicable Service Bulletins

One commenter, the manufacturer, advises the FAA that the applicable service bulletins may be revised for nontechnical reasons. The commenter feels that the latest revisions of the service bulletins need to be incorporated into the AD.

The FAA agrees. The revision numbers and dates have been incorporated into this final rule.

Request To Change Paragraph (j)(2)

One commenter requests that paragraph (j)(2) be changed to ensure that the hub and web receive an initial inspection if either of the two areas were not previously inspected. The same commenter suggests that paragraph (j)(2) be split into two paragraphs to properly specify the inspection deadlines for the hub and for the web, now that the originally proposed deadlines have been changed to accommodate the economic and operational burden associated with the web inspection.

The FAA agrees. We have changed paragraph (j)(2) of this AD. Because of the new schedule requirements, two paragraphs, each with its own schedule, are appropriate and the change has been made.

Request To Clarify ``Replace Before Further Flight'' Requirement on CF6-50 Spools

One commenter observes that the ``replace before further flight'' requirements for the CF6-50 spools include the reject limits of service bulletin CF6-50 S/B 72-A1131, while the preceding paragraph does not include this service bulletin. The commenter raised this comment out of concern that the inspection requirement per service bulletin CF6-50 S/B 72-A1131 was not identified in the preceding step.

The FAA partially agrees. In the current text, an inference may be made that spools must be inspected to all three referenced bulletins at each repeat inspection. The spool disposition requirements apply to results of all prescribed inspections specified in all the steps of the pertinent paragraph in the AD and not just to the preceding step. Therefore, for further clarification a heading ``Spool Disposition'' has been inserted.

Request To Add a Heading of ``Spool Reinstallation Limit''

One commenter requests that the heading Spool Reinstallation Limit be added before the applicable paragraphs. The commenter feels that the addition will clarify the intent of the paragraphs.

The FAA agrees. We have added the heading to the applicable paragraphs.

Concern Over the Availability of Training and Equipment

One commenter expresses concern that the requirements of ASB CF6- 80C2 72-A0934, Revision 3, can not be done because the equipment and training necessary to carry out this inspection are not available at this time. The commenter makes this comment out of concern that the prescribed inspections could not be done, per the proposed rule timetables, since there was no scheduled delivery of the necessary equipment and associated training.

The FAA agrees. However, this issue has been addressed by the engine manufacturer. Both equipment and training will be available in time to enable the commenter to comply with the requirements of this AD, therefore, no changes have been made.

Request To Change the Definition of a Shop Visit

One commenter states that the introduction of an engine into the shop solely for the 3-9 spool inspection should not be considered a shop visit. The request is made so that the stage 3-5 dovetail slot bottom inspection for the CF6-80C2 13-inch billet spools would not be forced if the spools could otherwise comply using the module level inspection. The hub and web inspections can be done at module level merely by removing the fan module from the core. The slot bottom inspection requires additional disassembly to remove the compressor top case. The request is made to avoid this additional disassembly.

The FAA disagrees. Material testing and stress analysis indicate that the dovetail slot bottoms have a dwell-fatigue limitation. Accordingly, the rule requires initial slot bottom inspection at the earliest exposure (piece-part exposure or rotor exposure, which is realized upon top case removal) but not later than the next required inspection of the hub and/or web for dwell fatigue

[[Page 77656]]

cracking. As the cracking mode is the same for all areas, the FAA can not apply lesser criteria to the slot bottoms.

Request To Include the 3-5 Dovetail Slot Bottom Inspection at Piece- Part Level Only

One commenter requests that the repeat inspection of the CF6-80C 13-inch billet spool stage 3-5 dovetail slot bottoms be required at piece-part exposure only. Accomplishment of this inspection at a module level would require, at a minimum, the removal of the compressor top case.

The FAA disagrees for reasons stated in the answer to the previous comment.

Request To Clarify the Reference Date for the Initial Inspection

One commenter states that there is no reference date for the initial inspection required in paragraph (a)(3) from which the operator is to determine items (i), (ii), and (iii) under this paragraph. The commenter uses the example that item (i) requires an inspection at the first piece-part exposure (PPE) after 1,000 CSN. The spool may have had several PPE's after 1,000 CSN in its life but never had the requirement to inspect at those visits. The commenter requests clarification of the reference date in this paragraph to ensure the proper time set.

The FAA disagrees. The proposal does not contain new requirements. It consolidates requirements of existing airworthiness directives, which include paragraph (a)(3). In the past, if an opportunity to have a PPE arose as the commenter states, the requirement of AD 99-24-15 would have been applicable. Additionally, the cyclic requirements of steps (i) and (ii) are associated with the cyclic life of the spool and not an independent cyclic interval. The third step (iii) also does not need the association with the effective date of this AD. Incorporation of the change the commenter proposes would conflict with requirements of the existing AD relative to the dovetail inspection. The proposed change would also affect additional paragraphs of the rule, not identified by the commenter, where similar arguments can be made.

Potential Confusion Over Requirements for Piece-Part Inspections

One commenter, the manufacturer, informs the FAA that a potential for confusion exists regarding the requirements for the one-time hub inspection of 8-inch billet spools. The existing wording in certain ASB's could be interpreted such that a modular level inspection of the hub could be performed, when in fact, piece-part inspection using Procedure A is required to achieve the intended level of safety. The manufacturer has revised the appropriate ASB's to add this clarification and suggests additional wording be added to this rule to ensure the correct procedure is used.

The FAA agrees. We have clarified the hub inspection requirements for affected spools in paragraphs (d)(1), (h)(1), (k)(1), and (m)(1).

Request To Correct P/N's and SN's for CF6-50 16-Inch and 13-Inch Billets

The same commenter states that the part number and serial number relationships for the CF6-50 16-inch and 13-inch billet spools relative to Table 2 were incorrect in the information that it sent to the FAA and need to be corrected in paragraphs (a) and (b), respectively.

The FAA agrees. We have made the appropriate changes to the final rule.

After careful review of the available data, including the comments noted above, the FAA has determined that air safety and the public interest require the adoption of the rule with the changes described previously. The FAA has determined that these changes will neither increase the economic burden on any operator nor increase the scope of the AD.

Cost Analysis

There are approximately 3,147 engines of the affected design in the worldwide fleet. The FAA estimates that 1,289 engines installed on airplanes of U.S. registry would be affected by this proposed AD. The FAA also estimates that it would take approximately 238 work hours per engine to perform the proposed actions. The average labor rate is $60 per work hour. Required parts would cost approximately $35,000 per engine. In addition, because of the previous AD actions, the FAA estimates that only 72 percent (928 engines) of the engines installed on airplanes of U.S. registry would be affected. Based on these figures, the total cost of the proposed AD on U.S. operators is estimated to be $45,731,840.

Regulatory Analysis

This final rule does not have federalism implications, as defined in Executive Order 13132, because it would not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. Accordingly, the FAA has not consulted with state authorities prior to publication of this final rule.

For the reasons discussed above, I certify that this action (1) is not a ``significant regulatory action'' under Executive Order 12866; (2) is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. A final evaluation has been prepared for this action and it is contained in the Rules Docket. A copy of it may be obtained by contacting the Rules Docket at the location provided under the caption ADDRESSES.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.

Adoption of the Amendment

Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows:

PART 39--AIRWORTHINESS DIRECTIVES

1. The authority citation for part 39 continues to read as follows:

   Authority: 49 U.S.C. 106(g), 40113, 44701.

   Sec. 39.13 [Amended]

2. Section 39.13 is amended by removing Amendments 39-9361 (60 FR 46216, September 6, 1995), 39-11440 (64 FR 66554, November 29, 1999), and 39-11868 (65 FR 50623, August 21, 2000), and by adding a new airworthiness directive, Amendment 39-12984, to read as follows:

   2002-25-08 General Electric Company (GE): Docket No. 2001-NE-26-AD. Supersedes AD 95-18-14, Amendment 39-9361; AD 99-24-15, Amendment 39-11440; and AD 2000-16-12, Amendment 39-11868.

   Applicability:This airworthiness directive (AD) is applicable to GE CF6-45, -50, -80A, -80C2, and -80E1 turbofan engines with high pressure compressor rotor (HPCR) stage 3-9 spools with part numbers (P/N's) listed in the following Table 1 installed:

   [[Page 77657]]

   Table 1

   Engine model

   HPCR stage 3-9 spool P/N

   CF6-45/50 Series Engines............... 9136M89G02, 9136M89G03, 9136M89G06, 9136M89G07, 9136M89G08, 9136M89G09, 9136M89G17, 9136M89G18, 9136M89G19, 9136M89G21, 9136M89G22, 9136M89G27, 9136M89G29, 9253M85G01, 9253M85G02, 9273M14G01, 9331M29G01. CF6-80A Series Engines................. 9136M89G10, 9136M89G11, 9136M89G20, 9136M89G21, 9136M89G22, 9136M89G27, 9136M89G28 CF6-80C2 Series Engines................ 1333M66G01, 1333M66G03, 1333M66G07, 1333M66G09, 1333M66G10, 1781M52P01, 1781M52P02, 1781M53G01, 1781M53G02 1781M53G03, 1781M53G04, 1781M53G05, 1781M53G06, 1781M53G07, 1781M53G08, 1781M53G09, 1781M53G10, 1854M95P01, 1854M95P02, 1854M95P03, 1854M95P04, 1854M95P05, 1854M95P06, 1854M95P07, 1854M95P08, 9380M28P05. CF6-80E1 Series Engines................ 1669M22G01, 1669M22G03, 1782M22G01, 1782M22G02, 1782M22G04.

   These engines are installed on, but not limited to, Airbus A300, A310, and A330 series, Boeing 747 and 767 series, and McDonnell Douglas DC-10 and MD-11 series airplanes.

   Note 1: This AD applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For engines that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (p) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.

   Compliance: Compliance with this AD is required as indicated, unless already done.

   To detect cracks, which can cause separation of the HPCR stage 3-9 spool and possible uncontained engine failure, do the following:

   CF6-45 and -50 16-Inch Billet Spools

   (a) For CF6 HPCR stage 3-9 spool, part numbers (P/N's) 9136M89G02 and 9136M89G06; and for P/N's 9136M89G08, 9253M85G02, 9273M14G01, 9331M29G01 with serial numbers (SN's) listed in the following Table 2, do the following:

   Table 2

   MPOE3486

   MPOE3487

   MPOE3488

   MPOE3489

   MPOE3490

   MPOE3491

   MPOE3492 MPOG3832

   MPOG3833

   MPOG3834

   MPOG3835

   MPOG3836

   MPOG3837

   MPOG3838 MPOG3839

   MPOG3840

   MPOG3841

   MPOG3842

   MPOG3843

   MPOG3844

   MPOG3845 MPOG3846

   MPOG3847

   MPOG3848

   MPOG3850

   MPOG3851

   MPOG5228

   MPOG5230 MPOG5231

   MPOG5232

   MPOG6216

   MPOG6727

   MPOG6728

   MPOG6729

   MPOG6730 MPOG6731

   MPOG6732

   MPOG6733

   MPOG6735

   MPOG6736

   MPOG6738

   MPOG6739 MPOG6740

   MPOG6741

   MPOG6742

   MPOG6743

   MPOG6744

   MPOG6745

   MPOG6746 MPOG7713

   MPOG7714

   MPOG7715

   MPOG7716

   MPOG7717

   MPOG7718

   MPOG7719 MPOG7720

   MPOG7721

   MPOG7722

   MPOG7723

   MPOG7724

   MPOG7725

   MPOG7726 MPOG7727

   MPOG7728

   MPOG7729

   MPOG7730

   MPOG7731

   MPOG7732

   MPOG7733 MPOG7734

   MPOG7735

   MPOG7736

   MPOG7737

   MPOG7738

   MPOG7739

   MPOG7740 MPOG7741

   MPOG7742

   MPOG7743

   MPOG7744

   MPOG7819

   MPOG7820

   MPOG7821 MPOG7822

   MPOG7823

   MPOG7824

   MPOG7825

   MPOG7826

   MPOG7827

   MPOG7828 MPOG7829

   MPOG7830

   MPOG7831

   MPOG7832

   MPOG7833

   MPOG7834

   MPOG7835 MPOG7836

   MPOG7837

   MPOG7838

   MPOG7839

   MPOG8822

   MPOG8823

   MPOG8824 MPOG8825

   MPOG8826

   MPOG8827

   MPOG8828

   MPOG8829

   MPOG8830

   MPOG8831 MPOG8832

   MPOG8833

   MPOG8834

   MPOG8835

   MPOG8836

   MPOG8837

   MPOG9185 MPOG9186

   MPOH0289

   MPOH0290

   MPOH0291

   MPOH0292

   MPOH0293

   MPOH0294 MPOH0295

   MPOH0296

   MPOH0297

   MPOH0298

   MPOH0299

   MPOH0300

   MPOH0301 MPOH0302

   MPOH0303

   MPOH0304

   MPOH0305

   MPOH1805

   MPOH2040

   MPOH2041 MPOH2042

   MPOH2043

   MPOH2044

   MPOH2045

   MPOH2046

   MPOH2047

   MPOH2048 MPOH2049

   MPOH2050

   MPOH2051

   MPOH2052

   MPOH2053

   MPOH2054

   MPOH2055 MPOH2056

   MPOH2057

   MPOH2058

   MPOH2059

   MPOH2060

   MPOH2061

   MPOH2062 MPOH2829

   MPOH2830

   MPOH2831

   MPOH2832

   MPOH2833

   MPOH2834

   MPOH2835 MPOH2836

   MPOH2837

   MPOH2838

   MPOH2839

   MPOH2840

   MPOH2841

   MPOH2842 MPOH2843

   MPOH2844

   MPOH2845

   MPOH2846

   MPOH2847

   MPOH2848

   MPOH2849 MPOH2850

   MPOH2851

   MPOH2852

   MPOH2853

   MPOH2854

   MPOH2855

   MPOH2856 MPOH2857

   MPOH2858

   MPOH4307

   MPOH4308

   MPOH4309

   MPOH4310

   MPOH4311 MPOH4312

   MPOH4313

   MPOH5277

   MPOH5278

   MPOH5279

   MPOH5280

   MPOH5281 MPOH5282

   MPOH5283

   MPOH5520

   MPOH5530

   MPOH5531

   MPOH5532

   MPOH5533 MPOH5534

   MPOH5535

   MPOH5536

   MPOH5537

   MPOH5538

   MPOH5539

   MPOH5540 MPOH5541

   MPOH5542

   MPOH5543

   MPOH5544

   MPOH5545

   MPOH5546

   MPOH5547 MPOH5548

   MPOH5549

   MPOH5550

   MPOH5551

   MPOH5552

   MPOH5553

   MPOH5554 MPOH7020

   MPOH7021

   MPOH7022

   MPOH7023

   MPOH7024

   MPOH7025

   MPOH7026 MPOH7027

   MPOH7028

   MPOH7030

   MPOH7960

   MPOH7965

   MPOH7966

   MPOH7967 MPOH7968

   MPOH7969

   MPOH7970

   MPOH7971

   MPOH7972

   MPOH7973

   MPOH7974 MPOH7975

   MPOH8638

   MPOH8639

   MPOH8640

   MPOH8641

   MPOH8642

   MPOH8643 MPOH8644

   MPOH8645

   MPOH8646

   MPOH8647

   MPOH8648

   MPOH8649

   MPOH8650 MPOH8651

   MPOH8652

   MPOH8653

   MPOH8654

   MPOH8655

   MPOH8656

   MPOH8657 MPOH8658

   MPOH8659

   MPOH8677

   MPOH8678

   MPOH8679

   MPOH8680

   MPOH8682 MPOH8683

   MPOH8684

   MPOJ1796

   MPOJ1797

   MPOJ1798

   MPOJ1799

   MPOJ1800

   [[Page 77658]]

   MPOJ1801

   MPOJ1803

   MPOJ1804

   MPOJ1806

   MPOJ1930

   MPOJ1931

   MPOJ1932 MPOJ1933

   MPOJ1934

   MPOJ1935

   MPOJ1936

   MPOJ1938

   MPOJ1939

   MPOJ1940 MPOJ1941

   MPOJ1942

   MPOJ1943

   MPOJ1944

   MPOJ1945

   MPOJ1946

   MPOJ1947 MPOJ1948

   MPOJ1949

   MPOJ1950

   MPOJ1951

   MPOJ1953

   MPOJ1954

   MPOJ1955 MPOJ1956

   MPOJ1957

   MPOJ1958

   MPOJ2420

   MPOJ2421

   MPOJ2422

   MPOJ2423 MPOJ2424

   MPOJ2425

   MPOJ2426

   MPOJ2427

   MPOJ2428

   MPOJ2429

   MPOJ2430 MPOJ2431

   MPOJ2432

   MPOJ2433

   MPOJ2434

   MPOJ2435

   MPOJ2436

   MPOJ2437 MPOJ2438

   MPOJ2439

   MPOJ2440

   MPOJ2441

   MPOJ2442

   MPOJ2443

   MPOJ2444 MPOJ2445

   MPOJ2446

   MPOJ2447

   MPOJ2448

   MPOJ2449

   MPOJ2450

   MPOJ4173 MPOJ4174

   MPOJ5185

   MPOJ5186

   MPOJ6035

   MPOJ6036

   MPOJ6039

   MPOJ6040 MPOJ6041

   MPOJ6042

   MPOJ6043

   MPOJ6044

   MPOJ6045

   MPOJ6046

   MPOJ6047 MPOJ6048

   MPOJ6049

   MPOJ6050

   MPOJ6051

   MPOJ6052

   MPOJ6053

   MPOJ6054 MPOJ6055

   MPOJ6056

   MPOJ6057

   MPOJ6058

   MPOJ6059

   MPOJ6060

   MPOJ6061 MPOJ6062

   MPOJ6063

   MPOJ6064

   MPOJ6065

   MPOJ6066

   MPOJ6067

   MPOJ6068 MPOJ6500

   MPOJ6501

   MPOJ6502

   MPOJ6503

   MPOJ6505

   MPOJ6506

   MPOJ6507 MPOJ6508

   MPOJ6509

   MPOJ6510

   MPOJ6511

   MPOJ6512

   MPOJ6513

   MPOJ6514 MPOJ6515

   MPOJ6516

   MPOJ6517

   MPOJ7632

   MPOJ7633

   MPOJ7634

   MPOJ7635 MPOJ7636

   MPOJ7637

   MPOJ7638

   MPOJ7639

   MPOJ7640

   MPOJ7641

   MPOJ7642 MPOJ7643

   MPOJ8046

   MPOJ8047

   MPOJ8048

   MPOJ8049

   MPOJ8050

   MPOJ8051 MPOJ9308

   MPOJ9309

   MPOJ9310

   MPOJ9311

   MPOJ9312

   MPOJ9313

   MPOJ9314 MPOJ9315

   MPOK1233

   MPOK1234

   MPOK1235

   MPOK1236

   MPOK1237

   MPOK1238 MPOK1239

   MPOK1240

   MPOK1824

   MPOK1825

   MPOK1826

   MPOK1827

   MPOK1828 MPOK1829

   MPOK1830

   MPOK1831

   MPOK1832

   MPOK2694

   MPOK2695

   MPOK3067 MPOK3068

   MPOK3069

   MPOK3070

   MPOK3071

   MPOK4659

   MPOK4660

   MPOK4661 MPOK4662

   MPOK4663

   MPOK4664

   MPOK4665

   MPOK4666

   MPOK4667

   MPOK5082 MPOK5083

   MPOK5084

   MPOK5085

   MPOK5086

   MPOK5087

   MPOK5088

   MPOK5520 MPOK5521

   MPOK5522

   MPOK5955

   MPOK5956

   MPOK5957

   MPOK5958

   MPOK5959 MPOK5960

   MPOK5961

   MPOK5962

   MPOK5963

   MPOK5964

   MPOK6247

   MPOK6248 MPOK6249

   MPOK6250

   MPOK6251

   MPOK6252

   MPOK6253

   MPOK6254

   MPOK6255 MPOK6256

   MPOK6257

   MPOK6715

   MPOK6716

   MPOK6823

   MPOK6824

   MPOK6825 MPOK6826

   MPOK6827

   MPOK6828

   MPOK6829

   MPOK6830

   MPOK6831

   MPOK7226 MPOK7227

   MPOK7228

   MPOK7229

   MPOK7230

   MPOK7231

   MPOK7232

   MPOK7233 MPOK7234

   MPOM2128

   MPOM2129

   MPOM2130

   MPOM2131

   MPOM2132

   MPOM2133 MPOM2134

   MPOM2135

   MPOM2136

   MPOM2137

   MPOM2138

   MPOM2357

   MPOM2358 MPOM2359

   MPOM2360

   MPOM2361

   MPOM2362

   MPOM2363

   MPOM2364

   MPOM2365 MPOM2366

   MPOM2461

   MPOM2462

   MPOM5521

   MPOM5522

   MPOM5523

   MPOM5524 MPOM5525

   MPOM5526

   MPOM5527

   MPOM5528

   MPOM5529

   MPOM5530

   MPOM5531 MPOM5532

   MPOM5533

   MPOM5534

   MPOM5535

   MPOM5536

   MPOM5537

   MPOM6151 MPOM6152

   MPOM6153

   MPOM6154

   MPOM6155

   MPOM6156

   MPOM6157

   MPOM6158 MPOM6159

   MPOM6160

   MPOM6161

   MPOM6162

   MPOM7087

   MPOM7088

   MPOM7089 MPOM7091

   MPOM7092

   MPOM7093

   MPOM7094

   MPOM7095

   MPOM7096

   MPOM7097 MPOM7098

   MPOM7099

   MPOM7100

   MPOM7101

   MPOM7102

   MPOM7103

   MPOM7104 MPOM7105

   MPOM7106

   MPOM7107

   MPOM7108

   MPOM7109

   MPOM8297

   MPOM8298 MPOM8299

   MPOM8300

   MPOM8301

   MPOM8302

   MPOM9246

   MPOM9257

   MPOM9258 MPOM9259

   MPOM9260

   MPOM9261

   MPOM9262

   MPOM9265

   MPOM9721

   MPOM9722 MPOM9723

   MPON0051

   MPON0052

   MPON0053

   MPON0055

   MPON0056

   MPON0057 MPON0058

   MPON0059

   MPON0060

   MPON0061

   MPON0062

   MPON0063

   MPON0064 MPON0065

   MPON0066

   MPON0067

   MPON0068

   MPON0069

   MPON0073

   MPON0074 MPON0075

   MPON0076

   MPON1077

   MPON1078

   MPON1079

   MPON1080

   MPON1081 MPON1082

   MPON1084

   MPON1085

   MPON1086

   MPON1087

   MPON1088

   MPON1089 MPON1090

   MPON1091

   MPON1092

   MPON1093

   MPON1094

   MPON1095

   MPON1096 MPON1097

   MPON1098

   MPON1099

   MPON1100

   MPON1642

   MPON4250

   MPON4252 MPON4254

   MPON4255

   MPON4256

   Initial Inspection

   (1) If the spool has not already been inspected using one of the alert service bulletins (ASB's) or service bulletins (SB's) listed in Column A of the following Table 3; OR a combination of one procedure from Column B and one from Column C; OR a combination of one procedure from Column D and one from Column E, inspect hub and bore in accordance with alert service bulletin

   (ASB) CF6-50 S/B 72-A1108, Revision 5, dated October 2, 2002, and the following compliance times:

   Table 3

   CF6-45 and -50 SB No.

   Procedures (70-32-XX) in Standard Practices Manual GEK9250

   Column A

   Column B

   Column C

   Column D

   Column E

   SB 72-888, Revision 3, dated 70-32-09, Revision 70-32-10, 71, 70-32-13,

   70-32-14, TR 70- January 31, 1991.

   71, dated October Revision dated Temporary

   26, dated August 1, 1995.

   October 1, 1995. Revision (TR), 70- 26, 1996. 25, dated August 26, 1996. SB 72-888, Revision 4, dated 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision March 28, 1991.

   72, dated

   72, dated

   72, dated

   72, dated November 15, 1996. November 15, 1996. November 15, 1996. November 15, 1996.

   [[Page 77659]]

   SB 72-888, Revision 5, dated 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision November 7, 1994.

   74, dated May 1, 74, dated May 1, 73, dated

   73, dated 1998.

1998. November 1, 1997. November 1, 1997. SB 72-888, Revision 6, dated .................. 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision December 22, 1995.

      75, dated

      75, dated

      75, dated December 15, 1998. December 15, 1998. December 15, 1998. SB 72-1000, Original dated

      .................. .................. 70-32-13, TR 70- 70-32-14, TR 70- December 14, 1990.

      41, dated

      42, dated February 10, 1999. February 10, 1999. SB 72-1000, Revision 1, dated .................. .................. 70-32-13, Revision 70-32-14, Revision March 28, 1991.

      76, dated May 15, 76, dated May 15, 1999.

1999. SB 72-1000, Revision 2, dated .................. .................. 70-32-17, TR 70- 70-32-18, TR 70- September 9, 1993.

      39, dated

      40, dated December 15, 1998. December 15, 1998. SB 72-1000, Revision 3, dated .................. .................. 70-32-17, Revision 70-32-18, Revision December 22, 1995.

      76, dated May 15, 76, dated May 15, 1999.

1999. SB 72-1108, Original, dated .................. .................. 70-32-17, TR 70- 70-32-18, TR 70- November 6, 1995.

      47, dated October 48, dated October 28, 1999.

      28, 1999. SB 72-1108, Revision 1, dated

      .................. July 29, 1996. ASB 72-A1108, Revision 2, dated

      .................. October 28, 1999. ASB 72-A1108, Revision 3, dated

      .................. November 12, 1999. ASB 72-A1108, Revision 4, dated

      .................. June 6, 2001. ASB CF6-50 S/B 72-A1108,

      .................. Revision 5, dated October 2, 2002.

      (i) For spools with greater than 3,500 cycles-since-new (CSN) on the effective date of this AD, inspect before further flight.

      (ii) For spools with 3,500 or fewer CSN, on the effective date of this AD, inspect at the first piece-part exposure (PPE) after 1,000 CSN or before 3,500 CSN, whichever occurs earlier.

      (2) For spools that have not been inspected using ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002, or an earlier revision of ASB CF6-50 S/B 72-A1131 or SB 72-1131, inspect the web and hub- to-web transition areas in accordance with the requirements of ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002, at the first PPE after 1,000 CSN, but before 4,000 additional cycles in-service (CIS) after the effective date of this AD.

      (3) For spools that have not been inspected using ASB CF6-50 S/B 72-A1157, Revision 4, dated October 2, 2002, or an earlier revision of ASB CF6-50 S/B 72-A1157, inspect the stage 3-5 dovetail slot bottoms in accordance with the requirements of ASB CF6-50 S/B 72- A1157, Revision 4, dated October 2, 2002, at the earliest of:

      (i) The first PPE after 1000 CSN, or

      (ii) The first HPC rotor exposure after 1000 CSN, or

      (iii) The next required inspection to ASB CF6-50 S/B 72-A1108, Revision 5, dated October 2, 2002.

      Repetitive Inspection

      (4) For spools that have already been inspected using one of the ASB's or SB's listed in Column A of Table 3; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, reinspect the hub and bore in accordance with the requirements of ASB CF6-50 S/B 72- A1108, Revision 5, dated October 2, 2002, and the stage 3-5 dovetail slot bottoms in accordance with ASB CF6-50 S/B 72-A1157, Revision 4, dated October 2, 2002, at the earliest of:

      (i) Each PPE with more than 1,000 cycles-since-last-inspection (CSLI) and 3,500 CSN, or

      (ii) From July 29, 2001 through January 27, 2003, before the cycle limits of the following Table 4:

      Table 4

      CSN at last inspection

      Repeat inspection by

      (A) 6,000 or fewer CSN................. 3,500 CSLI. (B) 6,001 to 7,000 CSN................. 9,500 CSN. (C) 7,001 to 8,000 CSN................. 2,500 CSLI. (D) 8,001 to 8,500 CSN................. 10,500 CSN. (E) 8,501 or more CSN.................. 2,000 CSLI.

      (iii) After January 27, 2003, before the cycle limits of the following Table 5:

      Table 5.

      CSN at last inspection

      Repeat inspection by

      (A) 5,000 or fewer CSN................. 3,500 CSLI. (B) 5,001 to 5,500 CSN................. 8,500 CSN. (C) 5,501 to 6,500 CSN................. 3,000 CSLI. (D) 6,501 to 7,000 CSN................. 9,500 CSN. (E) 7,001 to 8,000 CSN................. 2,500 CSLI. (F) 8,001 to 8,500 CSN................. 10,500 CSN. (G) 8,501 or more CSN.................. 2,000 CSLI.

      Spool Disposition

      (5) If inspection findings equal or exceed the reject limits established by ASB CF6-50 S/B 72-A1108, Revision 5, dated October 2, 2002; or ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002; or ASB CF6-50 S/B 72-A1157, Revision 4, dated October 2, 2002, replace spool before further flight.

      CF6-45 and -50 13-inch Billet Spools

      (b) For CF6 HPC Rotor Stage 3-9 Spool, P/N's 9136M89G03, 9136M89G07, 9136M89G09, 9136M89G17, 9136M89G18, 9253M85G01, and for P/N's 9136M89G08, 9253M85G01, 9273M14G01, and 9331M29G01 with serial numbers that are not listed in Table 2, do the following:

      Initial Inspection

      (1) If the spool has greater than 7,000 CSN on the effective date of this AD and has not

      [[Page 77660]]

      already been inspected using one of the ASB's or SB's listed in Column A of Table 3; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, inspect hub and bore in accordance with ASB CF6-50 S/B 72-A1108, Revision 5, dated October 2, 2002 before further flight.

      (2) If the spool has 7,000 or fewer CSN on the effective date of this AD and has not already been inspected using one of the ASB's or SB's listed in Column A of Table 3; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, inspect hub and bore in accordance with ASB CF6-50 S/B 72-A1108, Revision 5, dated October 2, 2002, at the earliest of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first engine shop visit (ESV) after 4,000 CSN, or

      (iii) From July 29, 2001, through January 27, 2003, before 7,000 CSN, and after January 27, 2003, before 4,000 CSN.

      (3) For spools that have not been inspected using ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002, or an earlier revision of ASB CF6-50 S/B 72-A1131 or SB 72-1131, inspect the web and hub- to-web transition areas in accordance with the requirements of ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) Within 4,000 additional CIS after the effective date of this AD.

      (4) For spools that have not been inspected using ASB CF6-50 S/B 72-A1157, Revision 4, dated October 2, 2002, or an earlier revision of ASB CF6-50 S/B 72-A1157, inspect the stage 3-5 dovetail slot bottoms in accordance with the requirements of ASB CF6-50 S/B 72- A1157, Revision 4, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) Within 4,000 additional CIS after the effective date of this AD.

      Repetitive Inspection

      (5) For spools that have already been inspected using one of the ASB's or SB's listed in Column A of Table 3; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, reinspect the hub and bore in accordance with the requirements of ASB CF6-50 S/B 72- A1108, Revision 5, dated October 2, 2002, at the earliest of:

      (i) Each PPE with more than 1,000 CSLI and 4,000 CSN, or

      (ii) Each ESV with more than 2,000 CSLI and 4,000 CSN, or

      (iii) Before 4,000 CSLI.

      Spool Disposition

      (6) If inspection findings equal or exceed the reject limits established by ASB CF6-50 S/B 72-A1108, Revision 5, dated October 2, 2002; or ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002; or ASB CF6-50 S/B 72-A1157, Revision 4, dated October 2, 2002, replace spool before further flight.

      CF6-45 and -50 9 and 10-Inch Billet Spools

      (c) For CF6 HPCR stage 3-9 spool, P/N's 9136M89G19, 9136M89G21, 9136M89G22 and 9136M89G27, do the following:

      Initial Inspection

      (1) If the spool has greater than 7,000 CSN on the effective date of this AD and has not already been inspected using one of the ASB's or SB's listed in Column A of Table 3; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, inspect the hub and bore in accordance with ASB CF6-50 S/B 72-A1108, Revision 5, dated October 2, 2002 before further flight.

      (2) If the spool has 7,000 or fewer CSN on the effective date of this AD, and has not already been inspected using one of the ASB's or SB's listed in Column A of Table 3; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, inspect the hub and bore in accordance with ASB CF6-50 S/B 72-A1108, Revision 5, dated October 2, 2002, at the earliest of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 3,000 CSN, or

      (iii) From July 29, 2001 through January 27, 2003, before 7,000 CSN, and after January 27, 2003, before 3,500 CSN.

      (3) For spools that have not been inspected using ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002, or an earlier revision of ASB CF6-50 S/B 72-A1131 or SB CF6-50 S/B 72-1131, inspect the web and hub-to-web transition areas in accordance with the requirements of ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) Within 4,000 additional CIS after the effective date of this AD.

      (4) For spools that have not been inspected using ASB CF6-50 S/B 72-A1157, Revision 4, dated October 2, 2002, or an earlier revision of ASB CF6-50 S/B 72-A1157, inspect the stage 3-5 dovetail slot bottom in accordance with the requirements of ASB CF6-50 S/B 72- A1157, Revision 4, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) Within 4,000 additional CIS after the effective date of this AD.

      Repetitive Inspection

      (5) For spools that have already been inspected using one of the ASB's or SB's listed in Column A of Table 3; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, reinspect the hub and bore in accordance with the requirements of ASB CF6-50 S/B 72- A1108, Revision 5, dated October 2, 2002, at the earliest of:

      (i) Each PPE with more than 1,000 CSLI and 3,500 CSN, or

      (ii) From July 29, 2001, through January 27, 2003, before the cycle limits of the following Table 6, or:

      Table 6

      CSN at last inspection

      Reinspect by

      (A) 3,500 or fewer CSN................. 7,000 CSN. (B) 3,501 to 6,000 CSN................. 3,500 CSLI. (C) 6,001 to 7,000 CSN................. 9,500 CSN. (D) 7,001 to 8,000 CSN................. 2,500 CSLI. (E) 8,001 to 8,500 CSN................. 10,500 CSN. (F) 8,501 or more CSN.................. 2,000 CSLI.

      (iii) After January 27, 2003, before the cycle limits of Table 5.

      Spool Disposition

      (6) If inspection findings equal or exceed the reject limits established by ASB CF6-50 S/B 72-A1108, Revision 5, dated October 2, 2002; or ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002; or ASB CF6-50 S/B 72-A1157, Revision 4, dated October 2, 2002; replace spool before further flight.

      Spool Reinstallation Limit

      (7) After the effective date of this AD, do not install any engine that has an HPCR stage 3-9 spool, P/N's 9136M89G19, 9136M89G21, 9136M89G22, and 9136M89G27, installed where the spool has 10,500 or more CSN.

      CF6-45 and -50 8-Inch Billet 2-Piece spools

      (d) For CF6 HPCR stage 3-9 spool, P/N 9136M89G29, do the following:

      (1) If the spool has not already been inspected using one of the ASB's or SB's listed in Column A of Table 3; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, inspect hub and bore in accordance with the piece-part level inspection of ASB CF6- 50 S/B 72-A1108, Revision 5, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 6,000 CSN.

      (2) For spools that have not been inspected using ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002, or an earlier revision of ASB CF6-50 S/B 72-A1131 or SB 72-1131, inspect the web and hub- to-web transition areas in accordance with the requirements of ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 6,000 CSN.

      (3) For spools that have not been inspected using ASB CF6-50 S/B 72-A1157, Revision 4, dated October 2, 2002, or an earlier revision of ASB 72-A1157, inspect the stage 3-5 dovetail slot bottom in accordance with the requirements of ASB CF6-50 S/B 72-A1157, Revision 4, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 6,000 CSN.

      Spool Disposition

      (4) If inspection findings equal or exceed the reject limits established by ASB CF6-50 S/B 72-A1108, Revision 5, dated October 2, 2002; or ASB CF6-50 S/B 72-A1131, Revision 4, dated October 2, 2002; or ASB CF6-50 S/B 72-A1157, Revision 4, dated

      [[Page 77661]]

      October 2, 2002; replace spool before further flight.

      CF6-80A 16-Inch Billet Spools

      (e) For CF6 HPCR stage 3-9 spool, P/N's 9136M89G10 with SN's MPOM0054, MPOM7090, MPOM8303, MPOM8304, MPOM9263, MPOM9264, MPON0054, MPON0071, MPON0072, MPON1643, MPON4251, or MPON4253, do the following:

      Initial Inspection

      (1) If the spool has not already been inspected using one of the ASB's or SB's listed in Column A of the following Table 7; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, inspect hub and bore in accordance with ASB CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002, and the following compliance times:

      Table 7

      CF6-80A SB No.

      Procedures (70-32-XX) in standard practices manual GEK9250

      Column A

      Column B

      Column C

      Column D

      Column E

      SB 72-500, Revision 3, dated 70-32-09, Revision 70-32-10, Revision 70-32-13,

      70-32-14, TR 70- March 19, 1991.

      71, dated October 71, dated October Temporary

      26, dated August 1, 1995.

      1, 1995.

      Revision (TR), 70- 26, 1996. 25, dated August 26, 1996. SB 72-500, Revision 4, dated 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision July 1, 1991.

      72, dated

      72, dated

      72, dated

      72, dated November 15, 1996. November 15, 1996. November 15, 1996. November 15, 1996. SB 72-500, Revision 5, dated 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision November 7, 1994.

      74, dated May 1, 74, dated May 1, 73, dated

      73, dated 1998.

1998. November 1, 1997. November 1, 1997. SB 72-500, Revision 6, dated .................. 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision December 22, 1995.

      75, dated

      75, dated

      75, dated December 15, 1998. December 15, 1998. December 15, 1998. SB 72-583, Original, dated

      .................. .................. 70-32-13, TR 70- 70-32-14, TR 70- December 20, 1990.

      41, dated

      42, dated February 10, 1999. February 10, 1999. SB 72-583, Revision 1, dated .................. .................. 70-32-13, Revision 70-32-14, Revision March 18, 1991.

      76, dated May 15, 76, dated May 15, 1999.

1999. SB 72-583, Revision 2, dated .................. .................. 70-32-17, TR 70- 70-32-18, TR 70- July 15, 1991.

      39, dated

      40, dated December 15, 1998. December 15, 1998. SB 72-583, Revision 3, dated .................. .................. 70-32-17, Revision 70-32-18, Revision July 24, 1991.

      76, dated May 15, 76, dated May 15, 1999.

1999. SB 72-583, Revision 4, dated .................. .................. 70-32-17, TR 70- 70-32-18, TR 70- September 15, 1993.

      47, dated October 48, dated October 28, 1999.

      28, 1999. SB 72-583, Revision 5, dated December 22, 1995. SB 72-678, Original, dated November 6, 1995. SB 72-678, Revision 1, dated July 29, 1996. ASB 72-A678, Revision 2, dated October 28, 1999. ASB 72-A678, Revision 3, dated November 12, 1999. ASB 72-A0678, Revision 4, dated June 6, 2001. ASB CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002.

      (i) For spools with greater than 3,500 CSN on the effective date of this AD, inspect before further flight.

      (ii) For spools with 3,500 or fewer CSN on the effective date of this AD, inspect at the first PPE after 1,000 CSN or before 3,500 CSN, whichever occurs earlier.

      (2) For spools that have not been inspected using ASB CF6-80A S/ B 72-A0691, Revision 5, dated October 2, 2002, or an earlier revision of ASB CF6-80A S/B 72-A0691 or SB 72-0691, inspect the web and hub-to-web transition areas in accordance with the requirements of ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) Within 4,000 additional CIS accumulated after the effective date of this AD.

      (3) For spools that have not been inspected using ASB CF6-80A S/ B 72-A0719, Revision 5, dated October 2, 2002, or an earlier revision of ASB CF6-80A S/B 72-A0719, inspect the stage 3--5 dovetail slot bottom in accordance with the requirements of ASB CF6- 80A S/B 72-A0719, Revision 5, dated October 2, 2002, at the earliest of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first HPCR exposure after 1,000 CSN, or

      (iii) The next required inspection to ASB

      CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002.

      Repetitive Inspections

      (4) For spools that have already been inspected using one of the ASB's or SB's listed in Column A of Table 7; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D and one from Column E, reinspect the hub and bore in accordance with the requirements of ASB CF6-80A S/B 72- A0678, Revision 5, dated October 2, 2002; and the dovetail slot bottoms in accordance with the requirements of ASB CF6-80A S/B 72- A0719, Revision 5, dated October 2, 2002, at the earliest of:

      (i) Each PPE with more than 1,000 CSLI and 3,500 CSN, or

      [[Page 77662]]

      (ii) From July 29, 2001 through January 27, 2003 before the cycle limits of Table 4, or

      (iii) After January 27, 2003, before the cycle limits of Table 5.

      Spool Disposition

      (5) If inspection findings equal or exceed the reject limits established by ASB CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002; or ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2, 2002; or ASB CF6-80A S/B 72-A0719, Revision 5, dated October 2, 2002; replace spool before further flight.

      Spool Reinstallation Limit

      (6) After the effective date of this AD, do not install any engine that has an HPCR stage 3-9 spool P/N 9136M89G10 with serial numbers (SN's) MPOM0054, MPOM7090, MPOM8303, MPOM8304, MPOM9263, MPOM9264, MPON0054, MPON0071, MPON0072, MPON1643, MPON4251, or MPON4253, installed where the spool has 10,500 or more CSN.

      CF6-80A 13-Inch Billet Spools

      (f) For all other CF6 HPCR stage 3-9 spools,

      P/N 9136M89G10, with SN's that are not listed in paragraph (e) of this AD, and P/N 9136M89G11, do the following:

      Initial Inspection

      (1) If the spool has greater than 7,000 CSN on the effective date of this AD and has not already been inspected using one of the ASB's or SB's listed in Column A of Table 7; OR a combination of one procedure from Column B and one from Column C; OR a combination of one procedure from Column D and one from Column E, inspect hub and bore in accordance with ASB CF6-80A 72-A0678, Revision 5, dated October 2, 2002 before further flight.

      (2) If the spool has 7,000 or fewer CSN on the effective date of this AD and has not already been inspected using one of the ASB's or SB's listed in Column A of Table 7; OR a combination of one procedure from Column B and one from Column C; OR a combination of one procedure from Column D and one from Column E, inspect hub and bore in accordance with ASB CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002, at the earliest of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 5,000 CSN or

      (iii) From July 29, 2001, through January 27, 2003 before 7,000 CSN, and after January 27, 2003, before 5,000 CSN.

      (3) For spools that have not been inspected using ASB CF6-80A S/ B 72-A0691, Revision 5, dated October 2, 2002, or an earlier revision of ASB CF6-80A S/B 72-A0691 or SB 72-0691, inspect the web and hub-to-web transition areas in accordance with the requirements of ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) Within 4,000 additional CIS after the effective date of this AD.

      (4) For spools that have not been inspected using ASB CF6-80A S/ B 72-A0719, Revision 5, dated October 2, 2002, or an earlier revision of ASB CF6-80A S/B 72-A0719, inspect the dovetail slot bottom in accordance with the requirements of ASB CF6-80A S/B 72- A0719, Revision 5, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) Within 4,000 additional CIS after the effective date of this AD.

      Repetitive Inspection

      (5) For spools installed in CF6-80A1 and CF6-80A3 engines that were inspected using one of the ASB's or SB's listed in Column A of Table 7; OR a combination of one procedure from Column B and one from Column C; OR a combination of one procedure from Column D and one from Column E, reinspect hub and bore in accordance with alert ASB CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002, at the earliest of:

      (i) Each PPE with more than 1,000 CSLI and 5,000 CSN, or

      (ii) Each ESV with more than 2,000 CSLI and 5,000 CSN, or

      (iii) Within 4,000 CSLI and more than 5,000 CSN.

      (6) Spools installed in CF6-80A and CF6-80A2 engines previously inspected using one of the ASB's or SB's listed in Column A of Table 7; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, reinspect hub and bore in accordance with ASB CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002, at the earliest of:

      (i) Each PPE with more than 1,000 CSLI and 5,000 CSN, or

      (ii) Each ESV with more than 1,500 CSLI and 5,000 CSN, or

      (iii) Within 4,000 CSLI and more than 5,000 CSN.

      Spool Disposition

      (7) If inspection findings equal or exceed the reject limits established by ASB CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002; or ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2, 2002; or ASB CF6-80A S/B 72-A0719, Revision 5, dated October 2, 2002; replace spool before further flight.

      CF6-80A 9 and 10-Inch Billet Spools

      (g) For CF6 HPCR stage 3-9 spools, P/N's 9136M89G20, 9136M89G21, 9136M89G22 and 9136M89G27, do the following:

      Initial Inspection

      (1) If the spool has greater than 7,000 CSN on the effective date of this AD and has not already been inspected using one of the ASB's or SB's listed in Column A of Table 7; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, inspect hub and bore in accordance with ASB CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002 before further flight.

      (2) If the spool has 7,000 or fewer CSN on the effective date of this AD and has not already been inspected using one of the ASB's or SB's listed in Column A of Table 7; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, inspect hub and bore in accordance with ASB CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002, at the earliest of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 3,000 CSN or

      (iii) From July 29, 2001, through January 27, 2003, before 7,000 CSN, and after January 27, 2003, before 5,000 CSN.

      (3) For spools that have not been inspected using ASB CF6-80A S/ B 72-A0691, Revision 5, dated October 2, 2002, or an earlier revision of ASB CF6-80A S/B 72-A0691, or SB 72-0691, inspect the web and hub-to-web transition areas in accordance with the requirements of ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) Within 4,000 additional CIS after the effective date of this AD.

      (4) For spools that have not been inspected using ASB CF6-80A S/ B 72-A0719, Revision 5, dated October 2, 2002, or an earlier revision of ASB CF6-80A S/B 72-A0719 inspect the dovetail slot bottom in accordance with the requirements of ASB CF6-80A S/B 72- A0719, Revision 5, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) Within 4,000 additional CIS after the effective date of this AD.

      Repetitive Inspection

      (5) For spools that have already been inspected using one of the ASB's or SB's listed in Column A of Table 7; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, reinspect hub and bore in accordance with ASB CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002, at the earliest of:

      (i) Each PPE with more than 1,000 CSLI and 5,000 CSN, or

      (ii) From July 29, 2001 through January 27, 2003, before the cycle limits of Table 6.

      (iii) After January 27, 2003, before the cycle limits of the following Table 8:

      Table 8

      CSN at last inspection

      Repeat inspection by

      (A) 1,500 or fewer CSN................. 5,000 CSN (B) 1,501 to 5,000 CSN................. 3,500 CSLI (C) 5,001 to 5,500 CSN................. 8,500 CSN (D) 5,501 to 6,501 CSN................. 3,000 CSLI (E) 6,501 to 7,000 CSN................. 9,500 CSN (F) 7,001 to 8,000 CSN................. 2,500 CSLI (G) 8,001 to 8,500 CSN................. 10,500 CSN (H) 8,501 or more CSN.................. 2,000 CSLI

      Spool Disposition

      (6) If inspection findings equal or exceed the reject limits established by ASB CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002; or ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2, 2002; or ASB CF6-80A S/B 72-A0719, Revision 5, dated October 2, 2002; replace spool before further flight.

      [[Page 77663]]

      Spool Reinstallation Limit

      (7) After the effective date of this AD, do not install any engine that has an HPCR stage 3-9 spool, P/N's 9136M89G20, 9136M89G21, 9136M89G22, and 9136M89G27, installed where the spool has 10,500 or more CSN.

      CF6-80A 8-Inch Billet 2-Piece Spools

      (h) For CF6 HPCR stage 3-9 spool, P/N 9136M89G28, do the following:

      (1) If the spool has not already been inspected using one of the ASB's or SB's listed in Column A of Table 7; OR a combination of one procedure from Column B and one from Column C; OR a combination of one procedure from Column D and one from Column E, inspect hub and bore in accordance with the piece-part level inspection of ASB CF6- 80A S/B 72-A0678, Revision 5, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 6,000 CSN.

      (2) For spools that have not been inspected using ASB CF6-80A S/ B 72-A0691, Revision 5, dated October 2, 2002, or an earlier revision of ASB CF6-80A S/B 72-A0691, or SB 72-0691, inspect the web and hub-to-web transition areas in accordance with the requirements of ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 6,000 CSN.

      (3) For spools that have not been inspected using ASB CF6-80A S/ B 72-A0719, Revision 5, dated October 2, 2002, or an earlier revision of ASB CF6-80A S/B 72-A0719 inspect the stage 3--5 dovetail slot bottom in accordance with the requirements of ASB CF6-80A S/B 72-A0719, Revision 5, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 6,000 CSN.

      Spool Disposition

      (4) If inspection findings equal or exceed the reject limits established by ASB CF6-80A S/B 72-A0678, Revision 5, dated October 2, 2002; or ASB CF6-80A S/B 72-A0691, Revision 5, dated October 2, 2002; or ASB CF6-80A S/B 72-A0719, Revision 5, dated October 2, 2002; replace spool before further flight.

      CF6-80C2 13-Inch Billet Spools

      (i) For CF6 HPCR stage 3-9 spool, P/N's 1781M52P01, 1854M95P02,1781M52P02, 1854M95P05 and 9380M28P05, do the following:

      Initial Inspection

      (1) If the spool has not already been inspected using one of the ASB's or SB's listed in Column A of the following Table 9; OR a combination of one procedure from Column B and one from Column C; OR a combination of one procedure from Column D and one from Column E, inspect hub and bore in accordance with ASB CF6-80C2 S/B 72-A0812, Revision 4, dated October 2, 2002, and the following compliance times:

      Table 9

      CF6-80C2 SB No.

      Procedures (70-32-XX) in standard practices manual GEK9250

      Column A

      Column B

      Column C

      Column D

      Column E

      SB 72-418, Revision 2, May 14, 70-32-09, Revision 70-32-10, Revision 70-32-13,

      70-32-14, TR 70- 1991.

      71, dated October 71, dated October Temporary

      26, dated August 1, 1995.

      1, 1995.

      Revision (TR), 70- 26, 1996. 25, dated August 26, 1996. SB 72-418, Revision 3, November 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision 7, 1994.

      72, dated

      72, dated

      72, dated

      72, dated November 15, 1996. November 15, 1996. November 15, 1996. November 15, 1996. SB 72-418, Revision 4, December 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision 22, 1995.

      74, dated May 1, 74, dated May 1, 73, dated

      73, dated 1998.

1998. November 1, 1997. November 1, 1997. SB 72-758, Original, dated

      .................. 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision November 7, 1994.

      75, dated

      75, dated

      75, dated December 15, 1998. December 15, 1998. December 15, 1998. SB 72-758, Revision 1, dated .................. .................. 70-32-13, TR 70- 70-32-14, TR 70- December 22, 1995.

      41, dated

      42, dated February 10, 1999. February 10, 1999. SB 72-812, Original, dated

      .................. .................. 70-32-13, Revision 70-32-14, Revision November 6, 1995.

      76, dated May 15, 76, dated May 15, 1999.

1999. SB 72-812, Revision 1, dated .................. .................. 70-32-17, TR70-39, 70-322-18, TR 70- january 30, 1998.

      dated December 40, dated 15, 1998.

      December 15, 1998. ASB 72-A0812, Revision 2, dated .................. .................. 70-32-17, Revision 70-32-18, Revision October 28, 1999.

      76, dated May 15, 76, dated May 15, 1999.

1999. ASB 72-A0812, Revision 3, dated .................. .................. 70-32-17, TR 70- 70-32-18, TR 70- June 6, 2001.

      47, dated October 48, October 28, 28, 1999.

1999. ASB CF6-80C2 S/B 72-A0812, Revision 4, dated October 2, 2002..

      (i) For spools with greater than 3,500 CSN on the effective date of this AD, inspect before further flight.

      (ii) For spools with 3,500 or fewer CSN on the effective date of this AD, inspect at the first PPE after 1,000 CSN or before 3,500 CSN, whichever occurs earlier.

      (2) For spools that have not been inspected using ASB CF6-80C2 S/B 72-A0848, Revision 8, dated October 2, 2002, or an earlier revision of ASB 72-A0848 or SB 72-0848, inspect the web and hub-to- web transition areas in accordance with the requirements of ASB CF6- 80C2 S/B 72-A0848, Revision 8, dated October 2, 2002, at the earliest of:

      (i) The first PPE after 1000 CSN, or

      (ii) The next required inspection to ASB CF6-80C2 S/B 72-A0812, Revision 4, dated October 2, 2002, or

      (iii) From July 29, 2001 through January 27, 2003, before 7,000 CSN, and after January 27, 2003, before 3,500 CSN.

      (3) For spools that have not been inspected using ASB CF6-80C2 S/B 72-A0934, Revision 4, dated October 2, 2002, or an earlier revision of ASB 72-A0934, inspect the stage 3-5 dovetail slot bottom in accordance with the requirements of ASB CF6-80C2 S/B 72-A0934, Revision 4, dated October 2, 2002, at the earliest of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first HPCR exposure after 1,000 CSN, or

      (iii) The next required inspection to ASB

      CF6-80C2 S/B 72-A0812, Revision 4, dated October 2, 2002.

      Repetitive Inspection

      (4) For spools that have already been inspected using one of the ASB's or SB's listed in Column A of Table 9; OR a

      [[Page 77664]]

      combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, reinspect the hub and bore in accordance with ASB 72-A812, Revision 4, dated October 2, 2002; the web and hub-to-web transition areas in accordance with ASB CF6-80C2 S/B 72-A0848, Revision 8, dated October 2, 2002; and the stage 3-5 dovetail slot bottoms in accordance with ASB CF6-80C2 S/B 72-A0934, Revision 4, dated October 2, 2002, at the earliest of:

      (i) Each PPE with more than 1,000 CSLI and 3,500 CSN, or

      (ii) From July 29, 2001, through January 27, 2003, before the cycle limits of Table 4.

      (iii) After January 27, 2003, before the cycle limits of Table 5.

      Spool Disposition

      (5) If inspection findings equal or exceed the reject limits established by ASB CF6-80C2 S/B 72-A0812, Revision 4, dated October 2, 2002, or ASB CF6-80C2 S/B 72-A0848, Revision 8, dated October 2, 2002, or ASB CF6-80C2 S/B 72-A0934, Revision 4, dated October 2, 2002; replace spool before further flight.

      Spool Reinstallation Limit

      (6) After the effective date of this AD, do not install any engine that has an HPCR stage 3-9 spool, P/N's 1781M52P01, 1781M52P02, 1854M95P02, 1854M95P05, and 9380M28P05, installed where the spool has 10,500 or more CSN.

      CF6-80C2 9 and 10-Inch Billet Spools

      (j) For CF6 HPCR stage 3-9 spool, P/Ns 1333M66G01, 1333M66G03, 1333M66G07, 1333M66G09, 1781M53G01,1781M53G02, 1781M53G03, 1781M53G04, 1781M53G06, 1781M53G07, 1781M53G08, 1781M53G09, 1854M95P01, 1854M95P03, 1854M95P04, 1854M95P06, and 1854M95P07, do the following:

      Initial Inspection

      (1) If the spool has greater than 7,000 CSN on the effective date of this AD and has not already been inspected using one of the ASB's or SB's listed in Column A of Table 9; OR a combination of one procedure from Column B AND one from Column C; OR a combination of one procedure from Column D AND one from Column E, or if the spool has not been inspected using ASB CF6-80C2 S/B 72-A0848, Revision 8, dated October 2, 2002, or an earlier revision of ASB 72-A0848 or SB 72-0848, inspect the hub and bore in accordance with ASB CF6-80C2 S/ B 72-A0812, Revision 4, dated October 2, 2002; and the web and hub- to-web transition areas in accordance with ASB CF6-80C2 S/B 72- A0848, Revision 8, dated October 2, 2002, before further flight.

      (2) If the spool has 7,000 or fewer CSN on the effective date of this AD, and has not already been inspected using one of the ASB's or SB's listed in Column A of Table 9; OR a combination of one procedure from Column B and one from Column C; OR a combination of one procedure from Column D and one from Column E, inspect the hub and bore in accordance with ASB CF6-80C2 S/B 72-A0812, Revision 4, dated October 2, 2002, at the earliest of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 3,000 CSN, or

      (iii) From July 29, 2001, through January 27, 2003, before 7,000 CSN, and after January 27, 2003, before 3,500 CSN.

      (3) If the spool has 7,000 or fewer CSN on the effective date of this AD, and has not already been inspected using ASB CF6-80C2 S/B 72-A0848, Revision 8, dated October 2, 2002, or an earlier revision of ASB 72-A0848 or SB CF6-80C2 72-0848, inspect the web and the web and hub-to-web transition areas in accordance with CF6-80C2 S/B 72- A0848, Revision 8, dated October 2, 2002, at the earliest of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 3,000 CSN, or

      (iii) From July 29, 2001, through July 28, 2003, before 7,000 CSN and after July 28, 2003, before 3,500 CSN.

      (4) For spools that have not been inspected using ASB CF6-80C2 S/B 72-A0934, Revision 4, dated October 2, 2002, or an earlier revision of ASB 72-A0934, inspect the stage 3-5 dovetail slot bottom in accordance with the requirements of ASB CF6-80C2 S/B 72-A0934, Revision 4, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) Within 4,000 additional CIS after the effective date of this AD.

      Repetitive Inspection

      (5) For spools that have already been inspected using one of the ASB's or SB's listed in Column A of Table 9; OR a combination of one procedure from Column B and one from Column C; OR a combination of one procedure from Column D and one from Column E, reinspect the hub and bore in accordance with the requirements of ASB CF6-80C2 S/B 72- A0812, Revision 4, dated October 2, 2002, and the web and hub-to-web transition areas in accordance with ASB CF6-80C2 S/B 72-A0848, Revision 8, dated October 2, 2002, at the earlier of:

      (i) Each PPE with more than 1,000 CSLI and 3,500 CSN, or

      (ii) From July 29, 2001, through January 27, 2003, before the cycle limits of Table 6, and after January 27, 2003, before the cycle limits of Table 5.

      Spool Disposition

      (6) If inspection findings equal or exceed the reject limits established by ASB CF6-80C2 S/B 72-A0812, Revision 4, dated Revision 4, dated October 2, 2002, or ASB CF6-80C2 S/B 72-A0848, Revision 8, dated October 2, 2002, or ASB CF6-80C2 S/B 72\A0934, Revision 4, dated October 2, 2002; replace spool before further flight.

      Spool Reinstallation Limit

      (7) After the effective date of this AD, do not install any engine that has an HPCR stage 3-9 spool, P/N's 1333M66G01, 1333M66G03, 1333M66G07, 1333M66G09, 1781M53G01, 1781M53G02, 1781M53G03, 1781M53G04, 1781M53G06, 1781M53G07, 1781M53G08, 1781M53G09, 1854M95P01, 1854M95P03, 1854M95P04, 1854M95P06 and 1854M95P07, installed where the spool has 10,500 or more CSN.

      CF6-80C2 8-Inch Billet 2-Piece Spools

      (k) For CF6 HPCR stage 3-9 spool, P/N's 1333M66G10, 1781M53G05, 1781M53G010, and 1854M95P08, do the following:

      (1) If the spool has not already been inspected using one of the ASB's or SB's listed in Column A of Table 9; OR a combination of one procedure from Column B and one from Column C; OR a combination of one procedure from Column D and one from Column E, inspect hub and bore in accordance with the piece-part level inspection of ASB 72- A0812, Revision 4, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 6,000 CSN.

      (2) For spools that have not been inspected using ASB 72-A0848, Revision 8, dated October 2, 2002, or an earlier revision of ASB 72- A0848, or SB 72-0848, inspect the web and hub-to-web transition areas in accordance with the requirements of ASB CF6-80C2 S/B 72- A0848, Revision 8, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 6,000 CSN.

      (3) For spools that have not been inspected using ASB CF6-80C2 S/B 72-A0934, Revision 3, dated October 2, 2002, or an earlier revision of ASB 72-A0934, inspect the stage 3-5 dovetail slot bottom in accordance with the requirements of ASB CF6-80C2 S/B 72-A0934, Revision 4, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 6,000 CSN.

      Spool Disposition

      (4) If inspection findings equal or exceed the reject limits established by ASB CF6-80C2 S/B 72-A0812, Revision 4, dated October 2, 2002, or ASB CF6-80C2 S/B 72-A0848, Revision 8, dated October 2, 2002, or ASB CF6-80C2 S/B 72-A0934, Revision 4, dated October 2, 2002; replace spool before further flight.

      CF6-80E1 9&10-Inch Billet Spools

      (l) For CF6 HPCR stage 3-9 spool, P/N's 1669M22G01, 1669M22G03, 1782M22G01 and 1782M22G02, do the following:

      Initial Inspection

      (1) If the spool has greater than 7,000 CSN and has not already been inspected using one of the ASB's listed in Column A of the following Table 10; OR a combination of one procedure from Column B and one from Column C; OR a combination of one procedure from Column D and one from Column E, OR if the spool has not been inspected using ASB CF6-80E1 S/B 72-A0126, Revision 5, dated October 2, 2002, or an earlier revision of ASB 72-A0126, or SB 72-0126, inspect the hub and bore in accordance with ASB CF6-80E1 S/B 72-A0135, Revision 3, dated October 2, 2002; and the web and hub-to-web transition areas in accordance with ASB CF6-80E1 S/B 72-A0126, Revision 5, dated October 2, 2002, before further flight.

      [[Page 77665]]

      Table 10

      Procedures (70-32-XX) in standard practices manual GEK9250

      CF6-80E1 SB No. Column A

      Column B

      Column C

      Column D

      Column E

      ASB 72-A0135, dated August 13, 70-32-09, Revision 70-32-10, Revision 70-32-13,

      70-32-14, TR 70- 1998.

      71, dated October 71, dated October Temporary

      26, dated August 1, 1995.

      1, 1995.

      Revision (TR), 70- 26, 1996. 25, dated August 26, 1996. ASB 72-A0135, Revision 1, dated 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision October 28, 1999.

      71, dated

      71, dated

      72, dated

      71, dated November 15, 1996. November 15, 1996. November 15, 1996. November 15, 1996. ASB 72-A0135, Revision 2, dated 70-32-09, Revision 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision June 6, 2001.

      74, dated May 1, 74, dated May 1, 73, dated

      73, dated 1998.

1998. November 1, 1997. November 1, 1997. ASB CF6-80E1 S/B 72-A0135,

      .................. 70-32-10, Revision 70-32-13, Revision 70-32-14, Revision Revision 3, dated October 2,

      75, dated

      75, dated

      75, dated 2002.

      December 15, 1998. December 15, 1998. December 15, 1998. 70-32-13, TR 70- 70-41, TR 70-42, 41, dated

      dated February February 10, 1999. 10, 1999. 70-31-13, Revision 70-31-14, Revision 76, dated May 15, 76, dated May 15, 1999.

1999. 70-31-17, TR 70- 70-31-18, TR 70- 39, dated

      40, dated December 15, 1998. December 15, 1998. 70-31-17, Revision 70-31-18, Revision 76, dated May 15, 76, dated May 15, 1999.

1999. 70-31-17 TR 70-47, 70-31-18 TR 70-48, dated October 28, dated October 28, 1999.

1999. (2) If the spool has 7,000 or fewer CSN and has not already been inspected using one of the ASB's listed in Column A of Table 10; OR a combination of one procedure from Column B and one from Column C; OR a combination of one procedure from Column D and one from Column E, OR if the spool has not been inspected using ASB CF6-80E1 S/B 72- A0126, Revision 5, dated October 2, 2002, or an earlier revision of ASB 72-A0126, or SB 72-0126, inspect the hub and bore in accordance with ASB CF6-80E1 S/B 72-A0135, Revision 3, dated October 2, 2002; and the web and hub-to-web transition areas in accordance with ASB CF6-80E1 S/B 72-A0126, Revision 5, dated October 2, 2002, at the earliest of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 3,000 CSN, or

      (iii) From July 29, 2001, through January 27, 2003, before 7,000 CSN, and after January 27, 2003, before 3,500 CSN.

      (3) Spools not previously inspected using ASB CF6-80E1 S/B 72- A0137, Revision 4, dated October 2, 2002, or an earlier revision of ASB 72-0137, or SB 72-0137, inspect stage 3-5 dovetail slot bottoms in accordance with the requirements of ASB CF6-80E1 S/B 72-A0137, Revision 4, dated October 2, 2002, at the earliest of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first HPCR exposure after 1,000 CSN, or

      (iii) The next required inspection to ASB

      CF6-80E1 S/B 72-A0135, Revision 3, dated October 2, 2002.

      Repetitive Inspection

      (4) For spools that have already been inspected using one of the ASB's listed in Column A of Table 10; OR a combination of one procedure from Column B and one from Column C; OR a combination of one procedure from Column D and one from Column E, inspect the hub and bore in accordance with the requirements of ASB CF6-80E1 S/B 72- A0135, Revision 3, dated October 2, 2002, the web and hub-to-web transition areas in accordance with ASB CF6-80E1 S/B 72-A0126, Revision 5, dated October 2, 2002, and the stage 3-5 dovetail slot bottoms in accordance with ASB CF6-80E1 S/B 72-A0137, Revision 4, dated October 2, 2002, at the earlier of:

      (i) Each PPE with more than 1,000 CSLI and 3,500 CSN, or

      (ii) From July 29, 2001, through January 27, 2003, before the cycle limits of Table 6, and after January 27, 2003, before the cycle limits of Table 5.

      Spool Disposition

      (5) If inspection findings equal or exceed the reject limits established by ASB CF6-80E1 S/B 72-A0135, Revision 3, dated October 2, 2002; ASB CF6-80E1 S/B 72-A0126, Revision 5, dated October 2, 2002; and ASB CF6-80E1 S/B 72-A0137, Revision 4, dated October 2, 2002; replace spool before further flight.

      Spool Reinstallation Limit

      (6) After the effective date of this AD, do not install any engine that has an HPCR stage 3-9 spool, P/N's 1669M22G01, 1669M22G03, 1782M22G01, and 1782M22G02, installed where the spool has 10,500 or more CSN.

      CF6-80E1 8-Inch Billet 2-Piece Spools

      (m) For CF6 HPCR stage 3-9 spool, P/N 1782M22G04, do the following:

      (1) If the spool has not already been inspected using one of the ASB's or SB's listed in Column A of the following Table 9; OR a combination of one procedure from Column B and one from Column C; OR a combination of one procedure from Column D and one from Column E, inspect hub and bore in accordance with the piece-part level inspection of ASB CF6-80E1 S/B 72-A0135, Revision 3, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 6,000 CSN.

      (2) For spools that have not been inspected using ASB CF6-80E1 S/B 72-A0126, Revision 5, dated October 2, 2002, or an earlier revision of ASB 72-A0126, or SB 72-0126, inspect the web and hub-to- web transition areas in accordance with ASB CF6-80E1 S/B 72-A0126, Revision 5, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 6,000 CSN.

      (3) For spools that have not been inspected using ASB CF6-80E1 S/B 72-A0137, Revision 4, dated October 2, 2002, or an earlier revision of ASB 72-A0137, or SB 72-0137, inspect the stage 3-5 dovetail slot bottoms in accordance with ASB CF6-80E1 S/B 72-A0137, Revision 4, dated October 2, 2002, at the earlier of:

      (i) The first PPE after 1,000 CSN, or

      (ii) The first ESV after 6,000 CSN.

      Spool Disposition

      (4) If inspection findings equal or exceed the reject limits established by ASB CF6-80E1 S/B 72-A0135, Revision 3, dated October 2, 2002; ASB CF6-80E1 S/B 72-A0126, Revision 5, dated October 2, 2002; and ASB CF6-80E1 S/B 72-A0137, Revision 4, dated October 2, 2002; replace spool before further flight.

      Reporting Requirements

      (n) Within five calendar days of inspection, report the results of inspections that equal or exceed the reject criteria to: Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive park, Burlington, MA 01803-5299; telephone (781) 238-7147; fax (781) 238-7199. Reporting requirements have been approved by the Office of Management and

      [[Page 77666]]

      Budget and assigned OMB control number 2120-0056. Be sure to include the following information:

      (1) Part Number.

      (2) Serial Number.

      (3) Spool CSN.

      (4) Spool CSLI.

      (5) Date and location where inspection was done.

      Definitions

      (o) For the purpose of this AD, the following definitions apply:

      (1) A module level exposure is a separation of the fan module from the engine.

      (2) An HPC rotor exposure is a HPC top or bottom case removal.

      (3) A PPE is a disassembly and removal of the stage 3-9 spool from the HPCR structure, regardless of any blades, locking lugs, bolts or balance weights assembled to the spool.

      (4) An ESV is the introduction of an engine into the shop where the separation of a major engine flange will occur after the effective date of this AD.

      (5) The following maintenance actions, or any combination, are not considered ESV's for requiring repeat inspections:

      (i) Introduction of an engine into a shop solely for removal of the compressor top or bottom case for airfoil maintenance or variable stator vane bushing replacement.

      (ii) Introduction of an engine into a shop solely for removal or replacement of the Stage 1 Fan Disk.

      (iii) Introduction of an engine into a shop solely for replacement of the Turbine Rear Frame.

      (iv) Introduction of an engine into a shop solely for replacement of the Accessory and/or Transfer Gearboxes.

      (v) Introduction of an engine into a shop solely for replacement of the Fan Forward Case.

      Alternative Methods of Compliance

      (p) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Engine Certification Office (ECO). Operators must submit their request through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, ECO.

      Note 2: Information concerning the existence of approved alternative methods of compliance with this airworthiness directive, if any, may be obtained from the ECO.

      Special Flight Permits

      (q) Special flight permits may be issued in accordance with Sec. Sec. 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be done.

      Documents That Have Been Incorporated By Reference

      (r) The inspections must be done in accordance with the following GE Aircraft Engines alert service bulletins (ASB's):

      Document No.

      Pages Revision

      Date

      ASB CF6-50 S/B 72-A1108.....................

      All

      5 October 2, 2002. Total pages: 7. ASB CF6-50 S/B 72-A1131.....................

      All

      4 Do. Total pages: 43. ASB CF6-50 S/B 72-A1157.....................

      All

      4 Do. Total pages: 38. ASB CF6-80A S/B 72-A0678....................

      All

      5 Do. Total pages: 7. ASB CF6-80A S/B 72-A0691....................

      All

      5 Do. Total pages: 43. ASB CF6-80A S/B 72-A0719....................

      All

      5 Do. Total pages: 38. ASB CF6-80C2 S/B 72-A0812...................

      All

      4 Do. Total pages: 6. ASB CF6-80C2 S/B 72-A0848...................

      All

      8 Do. Total pages: 43. ASB CF6-80C2 S/B 72-A0934...................

      All

      4 Do. Total pages: 38. ASB CF6-80E1 S/B 72-A0126...................

      All

      5 Do. Total pages: 44. ASB CF6-80E1 S/B 72-A0135...................

      All

      3 Do. Total pages: 6. ASB CF6-80E1 S/B 72-A0137...................

      All

      4 Do. Total pages: 38.

      This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from General Electric Company via Lockheed Martin Technology Services, 10525 Chester Road, Suite C, Cincinnati, Ohio 45215, telephone (513) 672-8400, fax (513) 672- 8422. Copies may be inspected at the FAA, New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the

      Effective Date

      (s) This amendment becomes effective on January 23, 2003.

      Issued in Burlington, Massachusetts, on December 11, 2002. Francis A. Favara, Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service.

      [FR Doc. 02-31754 Filed 12-18-02; 8:45 am]

      BILLING CODE 4910-13-U