Airworthiness directives: Boeing,
[Federal Register: June 23, 1999 (Volume 64, Number 120)]
[Proposed Rules]
[Page 33443-33445]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr23jn99-30]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 96-NM-226-AD]
RIN 2120-AA64
Airworthiness Directives; Boeing Model 737-200 Series Airplanes Modified in Accordance With Supplemental Type Certificate (STC) ST00969AT
AGENCY: Federal Aviation Administration, DOT.
ACTION: Notice of proposed rulemaking (NPRM).
SUMMARY: This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Boeing Model 737-200 series airplanes. This proposal would require removal of the existing emergency floor path lighting system and replacement with an FAA- approved emergency floor path lighting system. This proposal is prompted by information indicating that the existing emergency floor path lighting system does not provide adequate lighting and cueing for safe evacuation of the airplane in the event of an emergency. The actions specified by the proposed AD are intended to prevent such inadequate lighting and cueing, which could delay or impede the flight crew and passengers when exiting the airplane during an emergency.
DATES: Comments must be received by August 9, 1999.
ADDRESSES: Submit comments in triplicate to the Federal Aviation Administration (FAA), Transport Airplane Directorate, ANM-103, Attention: Rules Docket No. 96-NM-226-AD, 1601 Lind Avenue, SW., Renton, Washington 98055-4056. Comments may be inspected at this location between 9:00 a.m. and 3:00 p.m., Monday through Friday, except Federal holidays.
This information may be examined at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Small Airplane Directorate, Campus Building, 1701 Columbia Avenue, Suite 2-160, College Park, Georgia.
FOR FURTHER INFORMATION CONTACT: Angela Compton, Aerospace Engineer, ACE-116A, FAA, Small Airplane Directorate, Atlanta Aircraft Certification Office, One Crown Center, 1895 Phoenix Boulevard, suite 450, Atlanta, Georgia 30349; telephone (770) 703-6070; fax (770) 703- 6097.
SUPPLEMENTARY INFORMATION:
Comments Invited
Interested persons are invited to participate in the making of the proposed rule by submitting such written data, views, or arguments as they may desire. Communications shall identify the Rules Docket number and be submitted in triplicate to the address specified above. All communications received on or before the closing date for comments, specified above, will be considered before taking action on the proposed rule. The proposals contained in this notice may be changed in light of the comments received.
Comments are specifically invited on the overall regulatory, economic, environmental, and energy aspects of the proposed rule. All comments submitted will be available, both before and after the closing date for comments,
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in the Rules Docket for examination by interested persons. A report summarizing each FAA-public contact concerned with the substance of this proposal will be filedin the Rules Docket.
Commenters wishing the FAA to acknowledge receipt of their comments submitted in response to this notice must submit a self-addressed, stamped postcard on which the following statement is made: ``Comments to Docket Number 96-NM-226-AD.'' The postcard will be date stamped and returned to the commenter.
Availability of NPRMs
Any person may obtain a copy of this NPRM by submitting a request to the FAA, Transport Airplane Directorate, ANM-103, Attention: Rules Docket No. 96-NM-226-AD, 1601 Lind Avenue, SW., Renton, Washington 98055-4056.
Discussion
The FAA has received information indicating that the photoluminescent emergency floor path lighting system installed on Boeing Model 737-200 series airplanes that have been modified in accordance with Supplemental Type Certificate (STC) ST00969AT does not provide adequate lighting and cueing for safe evacuation of the airplane in the event of an emergency. (This STC entails the installation of a SAF-T-GLO Aerospace Limited emergency floor path lighting system.)
As specified in section 121.310(c)(3) of the Federal Aviation Regulations (14 CFR 121.310), airplanes that are type certificated after January 1, 1958, must, after November 26, 1986, include floor proximity emergency escape path marking requirements which meet the requirements of section 25.812(e) of this chapter that were in effect on November 26, 1994. Investigation revealed that the system does not comply with the certification requirements specified in section 25.812 as of November 26, 1994.
Such inadequate lighting and cueing of the escape path, if not corrected, could impede or delay the flight crew and passengers when exiting the airplane during an emergency.
Issuance of New Design Information
The FAA received an application for a type design change and has issued Supplemental Type Certification (STC) ST01829AT, dated February 11, 1999. The STC describes the installation of SAF-T-GLO Aerospace Limited's photoluminescent floor proximity emergency escape path marking system (FPEEPMS), which is a hybrid photoluminescent system that incorporates both electrical and photoluminescent parts.
Explanation of Requirements of Proposed Rule
Since an unsafe condition has been identified that is likely to exist or develop on other products of this same type design, the proposed AD would require removal of the existing emergency floor path lighting system and replacement with an FAA-approved emergency floor path lighting system.
Cost Impact
There are approximately 40 Boeing Model 737-200 series airplanes of the affected design in the worldwide fleet. The FAA estimates that 4 airplanes of U.S. registry would be affected by this proposed AD, that it would take approximately 12 work hours per airplane to accomplish the removal of the system, and at an average labor rate of $60 per work hour. It would take approximately 40 work hours per airplane to accomplish the proposed replacement with an FAA-approved system. Required parts for the replacement would cost approximately $10,000 for a new system, per airplane. Based on these figures, the cost impact of the proposed AD on U.S. operators is estimated to be $524,800, or $13,120 per airplane.
The cost impact figure discussed above is based on assumptions that no operator has yet accomplished any of the proposed requirements of this AD action, and that no operator would accomplish those actions in the future if this AD were not adopted.
Regulatory Impact
The regulations proposed herein would not have substantial direct effects 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. Therefore, in accordance with Executive Order 12612, it is determined that this proposal would not have sufficient federalism implications to warrant the preparation of a Federalism Assessment.
For the reasons discussed above, I certify that this proposed regulation (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) if promulgated, 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 copy of the draft regulatory evaluation prepared for this action 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, Safety.
The Proposed Amendment
Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration proposes to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows:
PART 39--AIRWORTHINESS DIRECTIVES
-
The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
-
Section 39.13 is amended by adding the following new airworthiness directive:
Boeing: Docket 96-NM-226-AD.
Applicability: Model 737-200 series airplanes equipped with SAF- T-GL0 Aerospace Limited emergency floor path lighting systems installed in accordance with Supplemental Type Certificate (STC) ST00969AT, certificated in any category.
Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been otherwise modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes 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 (b) 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: Required as indicated, unless accomplished previously.
To prevent inadequate lighting and cueing of the emergency floor path lighting system, which could delay or impede the flight crew and passengers when exiting the airplane during an emergency, accomplish the following:
(a) Within 120 days after the effective date of this AD, remove the existing photoluminescent emergency floor path lighting system from the airplane. Replace it with an emergency floor path lighting system in accordance with Supplemental Type Certificate ST01829AT, dated February 11, 1999, or an FAA-approved emergency floor path lighting system that is installed in accordance with a method approved by the Manager, Atlanta Aircraft Certification Office (ACO), FAA, Small Airplane Directorate.
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(b) 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, Atlanta ACO. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Atlanta ACO.
Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Atlanta ACO.
(c) Special flight permits may be issued in accordance with sections 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 accomplished.
Issued in Renton, Washington, on June 17, 1999. Dorenda D. Baker, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service.
[FR Doc. 99-15928Filed6-22-99; 8:45 am]
BILLING CODE 4910-13-U
