FR Doc 05-5016

[Federal Register: March 16, 2005 (Volume 70, Number 50)]
[Rules and Regulations]
[Page 12791-12793]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr16mr05-3]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2004-19448; Directorate Identifier 2004-NM-134-AD;
Amendment 39-14011; AD 2005-06-03]
RIN 2120-AA64

Airworthiness Directives; McDonnell Douglas Model MD-90-30
Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all
McDonnell Douglas Model MD-90-30 airplanes. This AD requires replacing,
with improved parts, certain existing fluorescent light lamp holders
located in the ceiling panels and life raft ceiling support housings,
and behind the overhead stowage compartments in the main cabin. This AD
is prompted by reports of failure of fluorescent light lamp holders in
the main cabin. We are issuing this AD to prevent chafing of the lamp
holder power wire against the mounting bracket, and moisture intrusion
into the lamp holders, which could result in failure of the lamp
holders and consequent smoke and fire in the airplane cabin.

DATES: This AD becomes effective April 20, 2005.
The incorporation by reference of certain publications listed in
the AD is approved by the Director of the Federal Register as of April
20, 2005.

ADDRESSES: For service information identified in this AD, contact
Boeing Commercial Airplanes, Long Beach Division, 3855 Lakewood
Boulevard, Long Beach, California 90846, Attention: Data and Service
Management, Dept. C1-L5A (D800-0024).
Docket: The AD docket contains the proposed AD, comments, and any
final disposition. You can examine the AD docket on the Internet at
http://dms.dot.gov, or in person at the Docket Management Facility

office between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The Docket Management Facility office (telephone (800) 647-
5227) is located on the plaza level of the Nassif Building at the U.S.
Department of Transportation, 400 Seventh Street SW., room PL-401,
Washington, DC. This docket number is FAA-2004-19448; the directorate
identifier for this docket is 2004-NM-134-AD.

[[Page 12792]]

FOR FURTHER INFORMATION CONTACT: George Mabuni, Aerospace Engineer,
Systems and Equipment Branch, ANM-130L, FAA, Los Angeles Aircraft
Certification Office, 3960 Paramount Boulevard, Lakewood, California
90712-4137; telephone (562) 627-5341; fax (562) 627-5210.

SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR Part 39
with an AD for all McDonnell Douglas Model MD-90-30 airplanes. That
action, published in the Federal Register on October 26, 2004 (69 FR
62424), proposed to require replacing, with improved parts, certain
existing fluorescent light lamp holders located in the ceiling panels
and life raft ceiling support housings, and behind the overhead stowage
compartments in the main cabin.

Comments

We provided the public the opportunity to participate in the
development of this AD. We have considered the single comment submitted
on the proposed AD.

Request To Specify Part Numbers of Existing and Replacement Lamp
Holders

The commenter requests that we revise the proposed AD to specify
the part numbers of fluorescent light lamp holders determined to be
defective and the part numbers of acceptable replacement fluorescent
light lamp holders. The commenter states that there may be other
acceptable replacement parts, but this is difficult to determine
without knowing the part numbers.
We concur. The part numbers of the defective and replacement
fluorescent light lamp holders are identified in C & D Aerospace Alert
Service Bulletins 59406XX-25A01, currently at Revision 4, dated July
31, 2003; and 51310XX-25A01, currently at Revision 5, dated March 30,
2004. The proposed AD refers to those service bulletins as additional
sources of instructions for accomplishing the replacement. For the
convenience of affected operators, we have revised paragraphs (f) and
(g) of this AD to include the relevant part numbers.

Conclusion

We have carefully reviewed the available data, including the
comment that was submitted, and determined that air safety and the
public interest require adopting the AD with the changes described
previously. We have determined that these changes will neither increase
the economic burden on any operator nor increase the scope of the AD.

Costs of Compliance

This AD will affect about 84 airplanes worldwide and 21 airplanes
of U.S. registry. The required actions will take about 98 work hours
per airplane, at an average labor rate of $65 per work hour. Required
parts will cost about $27,158 per airplane. Based on these figures, the
estimated cost of this AD for U.S. operators is $704,088, or $33,528
per airplane.

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
that is likely to exist or develop on products identified in this
rulemaking action.

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:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866;
(2) Is not a ``significant rule'' under 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.
We prepared a regulatory evaluation of the estimated costs to
comply with this AD. See the ADDRESSES section for a location to
examine the regulatory evaluation.

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 FAA amends 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. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive (AD):

2005-06-03 McDonnell Douglas: Amendment 39-14011. Docket No. FAA-
2004-19448; Directorate Identifier 2004-NM-134-AD.

Effective Date

(a) This AD becomes effective April 20, 2005.

Affected ADs

(b) None.

Applicability

Unsafe Condition

(d) This AD was prompted by reports of failure of fluorescent
light lamp holders in the main cabin. We are issuing this AD to
prevent chafing of the lamp holder power wire against the mounting
bracket, and moisture intrusion into the lamp holders, which could
result in failure of the lamp holders and consequent smoke and fire
in the airplane cabin.

Compliance

(e) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.

Replacement

(f) Within 18 months after the effective date of this AD,
replace existing fluorescent light lamp holders manufactured by Page
Aerospace Limited, part numbers (P/Ns) C779-02-001 and C779-09-001,
with improved parts manufactured by Bruce Industries Incorporated,
P/Ns BV04055-01-12 and BV04055N-01-12, as specified in Table 1 of
this AD.

[[Page 12793]]

Table 1.--Replacement of Lamp Holders
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Which refers to this
service information
Replace lamp holders in In accordance with as an additional
these locations-- this service source of
information-- replacement
instructions--
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(1) Ceiling panels and life Boeing Alert Service C & D Aerospace
raft ceiling support Bulletin MD90- Alert Service
housings. 33A012, Revision 3, Bulletin 59406XX-
dated January 14, 25A01; currently at
2004. Revision 4, dated
July 31, 2003.
(2) Sidewall behind the Boeing Alert Service C & D Aerospace
overhead stowage Bulletin MD90- Alert Service
compartments in the main 33A013, dated Bulletin 51310XX-
cabin. November 29, 2001. 25A01; currently at
Revision 5, dated
March 30, 2004.
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Parts Installation

(g) As of the effective date of this AD, no person may install a
fluorescent light lamp holder manufactured by Page Aerospace Limited
and having P/N C779-02-001 or C779-09-001, in the locations
specified in this AD, on any airplane.

Replacements Accomplished Per Previous Issues of Service Bulletin

(h) Replacements accomplished before the effective date of this
AD per the Accomplishment Instructions of Boeing Alert Service
Bulletin MD90-33A012, dated March 28, 2001; Revision 01, dated
September 17, 2001; or Revision 02, dated January 17, 2002; are
considered acceptable for compliance with paragraph (f) of this AD.

Alternative Methods of Compliance (AMOCs)

(i) The Manager, Los Angeles Aircraft Certification Office
(ACO), FAA, has the authority to approve AMOCs for this AD, if
requested in accordance with the procedures found in 14 CFR 39.19.

Material Incorporated by Reference

(j) You must use the service information that is specified in
Table 2 of this AD to perform the actions that are required by this
AD, unless the AD specifies otherwise. The Director of the Federal
Register approves the incorporation by reference of those documents
in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. For copies of
the service information, contact Boeing Commercial Airplanes, Long
Beach Division, 3855 Lakewood Boulevard, Long Beach, California
90846, Attention: Data and Service Management, Dept. C1-L5A (D800-
0024). For information on the availability of this material at the
National Archives and Records Administration (NARA), call (202) 741-
6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
You may view the AD docket

at the Docket Management Facility, U.S. Department of
Transportation, 400 Seventh Street SW., room PL-401, Nassif
Building, Washington, DC.

Table 2.--Material Incorporated by Reference
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Service bulletin Revision level Date
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Boeing Alert Service Bulletin MD90- 3....................................... January 14, 2004.
33A012.
Boeing Alert Service Bulletin MD90- Original................................ November 29, 2001.
33A013.
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Issued in Renton, Washington, on March 7, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-5016 Filed 3-15-05; 8:45 am]

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