Airworthiness directives: Cirris Design Corp.,
[Federal Register: October 13, 2006 (Volume 71, Number 198)]
[Rules and Regulations]
[Page 60414-60417]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr13oc06-2]
[[Page 60414]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
[Docket No. FAA-2006-24010; Directorate Identifier 2006-CE-14-AD; Amendment 39-14787; AD 2006-21-03]
RIN 2120-AA64
Airworthiness Directives; Cirrus Design Corporation Models SR20 and SR22 Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
SUMMARY: The FAA adopts a new airworthiness directive (AD) for certain Cirrus Design Corporation (CDC) Models SR20 and SR22 airplanes. This AD requires you to check the maintenance records to determine whether the brake caliper piston O-ring seals were replaced at the last annual or 100-hour inspection. If the O-rings were not replaced, this AD requires you to replace the O-ring seals with new seals or replace brake calipers. This AD also requires you to modify the main landing gear wheel fairings to add temperature indicator sticker inspection holes, trim the wheel fairings to prevent them from holding fluids, install temperature indicator stickers on the brake calipers, and insert Revision A6 (with revised preflight walk-around, a limitation on the engine speed used to taxi, and brake inspection/servicing intervals) into the Pilot's Operating Handbook (POH). This AD results from several reports of airplanes experiencing brake fires and two airplanes losing directional control. We are issuing this AD to detect, correct, and prevent overheating damage to the brake caliper piston O-ring seals, which could result in leakage of brake hydraulic fluid. Consequently, this could lead to the loss of braking with loss of airplane directional control or brake fire.
DATES: This AD becomes effective on November 17, 2006.
As of November 17, 2006, the Director of the Federal Register approved the incorporation by reference of certain publications listed in the regulation.
ADDRESSES: To get the service information identified in this AD, contact Cirrus Design Corporation, 4515 Taylor Circle, Duluth, Minnesota 55811; telephone: (218) 727-2737 or on the Internet at http://www.cirrusdesign.com .
To view the AD docket, go to the Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, Washington, DC 20590-001 or on the Internet at http://dms.dot.gov. The docket number is Docket No. FAA-2006-24010;
Directorate Identifier 2006-CE-14-AD.
FOR FURTHER INFORMATION CONTACT: Wess Rouse, Aerospace Engineer, ACE- 117C, Chicago Aircraft Certification Office, 2300 East Devon Avenue, Room 107, Des Plaines, Illinois 60018; telephone: (847) 294-8113; facsimile: (847) 294-7834.
SUPPLEMENTARY INFORMATION:
Discussion
On May 1, 2006, we issued a proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) to include an AD that would apply to certain CDC Models SR20 and SR22 airplanes. This proposal was published in the Federal Register as a notice of proposed rulemaking (NPRM) on May 8, 2006 (71 FR 26707). The NPRM proposed to require you to check the maintenance records to determine whether the brake caliper piston O-ring seals were replaced at the last annual or 100-hour inspection. If the O-rings were not replaced, this proposed AD would require you to replace the O-ring seals with new seals or replace brake calipers. This proposed AD would also require you to modify the main landing gear wheel fairings to add temperature indicator sticker inspection holes, trim the wheel fairings to prevent them from holding fluids, install temperature indicator stickers on the brake calipers, and insert Revision A6 (with revised preflight walk-around and taxi procedures) into the Pilot's Operating Handbook (POH).
Comments
We provided the public the opportunity to participate in developing this AD. The following presents the comment received on the proposal and FAA's response to the comment:
Comment Issue: Increase Emphasis on the Operational Aspects of Overheating of the Brakes
CDC points out that the brakes, as delivered, meet certification requirements, and when properly used, will provide the expected performance and service. We conclude that CDC believes that the AD overemphasizes the required maintenance actions and hardware upgrades, without explaining the operational details that will prevent brake caliper O-ring damage.
Our intent is that the AD stress continued operational safety by removing and replacing potentially damaged O-rings or replacement of existing brake calipers with new heavier duty calipers (with new O- rings installed), adding brake caliper temperature stickers with a new inspection hole in the wheel fairings (to detect potential O-ring damage before brake fluid leaks develop), and adding a revision to the Pilot's Operating Handbook (to emphasize brake preflight inspections, checking the color of the brake caliper temperature sticker for evidence of brake caliper overheating, and limiting the engine RPM during taxi to 1000 RPM).
We agree that the operational change to limit engine RPM during taxi (found in Revision A6 to the POH) is the most important consideration toward preventing brake caliper O-ring seal damage. This AD is requiring this action so we are not changing the AD as a result of this comment.
Conclusion
We have carefully reviewed the available data and determined that air safety and the public interest require adopting the AD as proposed except for minor editorial corrections. We have determined that these minor corrections:
Are consistent with the intent that was proposed in the NPRM for correcting the unsafe condition; and
Do not add any additional burden upon the public than was already proposed in the NPRM.
Costs of Compliance
We estimate that this AD affects 2,135 airplanes in the U.S. registry.
We estimate the following costs to do the check of maintenance records to determine whether the brake caliper piston O-ring seals were replaced at the last annual or 100-hour inspection:
Total cost per Total cost on Labor cost
Parts cost
airplane U.S. operators
1 work-hour x $80 = $80...................... Not Applicable.................
$80
$170,800
[[Page 60415]]
We estimate the following costs to install any necessary O-ring seals that would be required based on the results of this check of maintenance records. We have no way of determining the number of airplanes that may need this seal installation:
Total cost per Labor cost
Parts cost
airplane
4 work-hours x $80 = $320.............
$8
$328
We estimate the following costs to replace any brake calipers on Model SR20 airplanes, serial numbers (S/Ns) 1005 through 1194, that would be required based on the results of this check of maintenance records. We have no way of determining the number of these Model SR20 airplanes that may need to replace brake calipers:
Total cost per Labor cost
Parts cost
airplane
12 work-hours x $80 = $960............
$1,167
$2,127
We estimate the following costs to replace any brake calipers on Model SR20 airplanes, S/Ns 1195 through 1600, that would be required based on the results of this check of maintenance records. We have no way of determining the number of these Model SR20 airplanes that may need to replace brake calipers:
Total cost per Labor cost
Parts cost
airplane
8 work-hours x $80 = $640.............
$1,167
$1,807
We estimate the following costs to replace any brake calipers on Model SR22 airplanes that would be required based on the results of this check of maintenance records. We have no way of determining the number of Model SR22 airplanes that may need to replace brake calipers:
Total cost per Labor cost
Parts cost
airplane
5 work-hours x $80 = $400.............
$845
$1,245
We estimate the following costs to do the modification of the MLG wheel fairings to add the temperature indicator sticker inspection holes, trim the wheel fairings to prevent them from holding fluids, and install the temperature indicator sticker on the brake calipers:
Total cost per Total cost on Labor cost
Parts cost
airplane U.S. operators
2 work-hours x $80 = $160....................................
$2
$162
$345,870
The CDC has indicated that CDC will provide warranty credit as stated in the service information for modifying the MLG wheel fairings by adding the temperature indicator sticker inspection holes, trimming the wheel fairings to prevent them from holding fluids, and installing the temperature indicator sticker on the brake calipers.
We estimate the following costs to do the insertion of Revision A6 into the POH:
Total cost per Total cost on Labor cost
Parts cost
airplane U.S. operators
1 work-hour x $80............................ Not Applicable.................
$80
$170,800
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, Section 106 describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the agency's authority.
We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701, ``General requirements.'' Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition
[[Page 60416]]
that is likely to exist or develop on products identified in this AD.
Regulatory Findings
We have determined that this AD will not have federalism implications under Executive Order 13132. This AD will 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.
For the reasons discussed above, I certify that this AD:
-
Is not a ``significant regulatory action'' under Executive Order 12866;
-
Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and
-
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.
We prepared a summary of the costs to comply with this AD (and other information as included in the Regulatory Evaluation) and placed it in the AD Docket. You may get a copy of this summary by sending a request to us at the address listed under ADDRESSES. Include ``Docket No. FAA-2006-24010; Directorate Identifier 2006-CE-14-AD'' in your request.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.
Adoption of the Amendment
0 Accordingly, under 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
0 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]
0 2. FAA amends Sec. 39.13 by adding a new AD to read as follows:
2006-21-03 Cirrus Design Corporation: Amendment 39-14787; Docket No. Docket No. FAA-2006-24010; Directorate Identifier 2006-CE-14-AD.
Effective Date
(a) This AD becomes effective on November 17, 2006.
Affected ADs
(b) None.
Applicability
(c) This AD applies to the following airplane models and serial numbers (S/N) that are certificated in any category:
(1) Group 1: Model SR20 Airplanes, S/N 1005 through 1600.
(2) Group 2: Model SR22 Airplanes, S/N 0002 through 1739.
(3) Group 3: Model SR20 Airplanes, S/N 1005 through 1592.
(4) Group 4: Model SR22 Airplanes, S/N 0002 through 1727.
Unsafe Condition
(d) This AD results from several reports of airplanes that experienced brake fires and two airplanes that lost directional control. The actions specified in this AD are intended to detect, correct, and prevent overheating damage to the brake caliper piston O-ring seals, which could result in leakage of brake hydraulic fluid. Consequently, this could lead to the loss of braking with loss of airplane directional control or brake fire.
Compliance
(e) To address this problem, you must do the following:
Table 1.--Actions/Compliance/Procedures
Actions
Compliance
Procedures
(1) For Group 1 and Group 2 Within 50 hours No special airplanes:
time-in-service procedures Check the maintenance records (TIS) after
necessary to to determine whether the brake November 17, 2006 check the caliper piston O-ring seals (the effective maintenance were replaced at the last
date of this AD), records. The annual or 100-hour inspection. unless already owner/operator done.
holding at least a private pilot certificate as authorized by section 43.7 of the Federal Aviation Regulations (14 CFR 43.7) may make this check. You must make an entry into the airplane records that shows compliance with this portion of the AD in accordance with section 43.9 of the Federal Aviation Regulations (14 CFR 43.9).
(2) For Group 1 and Group 2 Before further For the airplanes: If you find as a flight after the replacement, result of the check required by check required by follow the brake paragraph (e)(1) of this AD paragraph (e)(1) maintenance that there is no record of the of this AD.
procedures in replacement of brake caliper
Section 32-42 of piston O-ring seals at the last
the SR20 or SR22 annual or 100-hour inspection,
Aircraft then do the following:
Maintenance (i) Replace the O-ring seals
Manual. For the with new O-ring seals or
replacement of (ii) Replace old brake calipers
the new brake with new brake calipers.
calipers, follow Cirrus Design Corporation Service Bulletin SB 2X-32-13 R1, Issued: December 15, 2005, Revised May 16, 2006.
(3) For Group 3 and Group 4 Do the
Follow Cirrus airplanes:
modification
Design (i) Modify the main landing within 50 hours Corporation gear (MLG) wheel fairings to TIS after
Service Bulletin add temperature indicator
November 17, 2006 SB 2X-32-14 R1, sticker inspection holes and (the effective Issued: January trim the wheel fairings to
date of this AD), 18, 2006, prevent them from holding
unless already Revised: February fluids; and
done. Do the
17, 2006. (ii) Install a temperature
temperature indicator sticker on the brake indicator sticker calipers.
installation within 50 hours TIS after November 17, 2006 (the effective date of this AD), unless already done, and thereafter before further flight anytime you have the O-ring seals replaced due to overheating of the brake assembly (temperature indicator sticker turned black).
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(4) For all airplanes:
Within 50 hours The owner/operator Insert the appropriate Revision TIS after
holding at least A6 part number (P/N) into the November 17, 2006 a private pilot Pilot's Operating Handbook
(the effective certificate as (POH), as presented in TABLE date of this AD), authorized by 2.--REVISION A6 TO THE PILOT'S unless already section 43.7 of OPERATING HANDBOOK, in
done.
the Federal paragraph (f) of this AD.
Aviation Regulations (14 CFR 43.7) may insert the information into the POH as specified in paragraph (e)(4) of this AD. Make an entry into the airplane maintenance records showing compliance with this portion of the AD in accordance with section 43.9 of the Federal Aviation Regulations (14 CFR 43.9).
(5) For Group 3 and Group 4 As of November 17, Follow Cirrus airplanes:
2006 (the
Design (i) Do not install any MLG
effective date of Corporation fairings without also doing the this AD).
Service Bulletin modifications required by
SB 2X-32-14 R1, paragraph (e)(3)(i) of this AD;
Issued: January and
18, 2006, (ii) Do not replace any brake
Revised: February calipers without also
17, 2006. installing the temperature indicator sticker required by paragraph (e)(3)(ii) of this AD.
(f) The following table specifies the POH Revision A6 part number as required in paragraph (e)(4) of this AD:
Table 2.--Revision A6 to the Pilot's Operating Handbook
Model SR20 or Affected airplanes SR22 airplane Date FAA-approved POH P/N
(1) Model SR20, S/N 1148
11934-002 January 18, 2006. through 1267. (2) Model SR20, S/N 1005
11934-002 January 18, 2006. through 1147 that have the 3,000-pound gross weight modification following Cirrus Design Corporation Service Bulletin SB 20-01- 00, Issued: February 25, 2003. (3) SR20, S/N 1268 through
11934-003 January 18, 2006. 1739. (4) SR22, S/N 002 through
13772-001 January 18, 2006. 1739.
Alternative Methods of Compliance (AMOCs)
(g) The Manager, Chicago Aircraft Certification Office (ACO), ATTN: Wess Rouse, Aerospace Engineer, FAA, ACE-117C, Chicago ACO, 2300 East Devon Avenue, Room 107, Des Plaines, Illinois 60018; telephone: (847) 294-8113; facsimile: (847) 294-7834, has the authority to approve alternative methods of compliance for this AD, if requested using the procedures found in 14 CFR 39.19.
Material Incorporated by Reference
(h) You must do the actions required by this AD following the instructions in Cirrus Design Corporation Service Bulletin SB 2X-32- 13 R1, Issued: December 15, 2005, Revised May 16, 2006; and Cirrus Design Corporation Service Bulletin SB 2X-32-14 R1, Issued: January 18, 2006, Revised: February 17, 2006. The Director of the Federal Register approved the incorporation by reference of this service bulletin in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. To get a copy of this service information, contact Cirrus Design Corporation, 4515 Taylor Circle, Duluth, Minnesota 55811; telephone: (218) 727-2737 or on the Internet at http://www.cirrusdesign.com. To review
copies of this service information, go to the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html or call
(202) 741-6030. To view the AD docket, go to the Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, Washington, DC 20590-001 or on the Internet at http://dms.dot.gov. The docket number is Docket No.
FAA-2006-24010; Directorate Identifier 2006-CE-14-AD.
Issued in Kansas City, Missouri, on October 3, 2006. Kim Smith, Manager, Small Airplane Directorate, Aircraft Certification Service.
[FR Doc. E6-16741 Filed 10-12-06; 8:45 am]
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