[Federal Register: March 14, 2005 (Volume 70, Number 48)]
[Rules and Regulations]
[Page 12401-12402]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr14mr05-1]
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Rules and Regulations
Federal Register
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[[Page 12401]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2004-19891; Directorate Identifier 2004-NM-136-AD;
Amendment 39-14006; AD 2005-05-17]
RIN 2120-AA64
Airworthiness Directives; Boeing Model 737-300, -400, and -500
Series Airplanes Modified In Accordance With Supplemental Type
Certificate (STC) ST00127BO
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
Boeing Model 737-300, -400, and -500 series airplanes modified in
accordance with STC ST00127BO. This AD requires installation of bonding
straps to the safe side harnesses of the digital transient suppression
device of the fuel quantity indicating system. This AD is prompted by
the results of fuel system reviews conducted by the STC holder. We are
issuing this AD to prevent unsafe levels of current or energy from
entering the fuel tank, due to hot short faults or threat conditions
associated with the safe side harness assembly, which could result in a
fire or explosion of the fuel tank.
DATES: This AD becomes effective April 18, 2005.
The incorporation by reference of Goodrich Service Bulletin 737-
300766-28-2, Revision 2, dated July 28, 2004, as listed in the AD, is
approved by the Director of the Federal Register as of April 18, 2005.
ADDRESSES: For service information identified in this AD, contact
Goodrich Fuel & Utility Systems, Goodrich Corporation, 100 Panton Road,
Vergennes, Vermont 05491.
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-2004-19891; the directorate
identifier for this docket is 2004-NM-136-AD.
FOR FURTHER INFORMATION CONTACT: Richard Spencer, Aerospace Engineer,
Boston Aircraft Certification Office, ANE-150, FAA, Engine and
Propeller Directorate, 12 New England Executive Park, Burlington,
Massachusetts 01803; telephone (781) 238-7184; fax (781) 238-7170.
SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR Part 39
with an AD for Boeing Model 737-300, -400, and -500 series airplanes
modified in accordance with STC ST00127BO. That action, published in
the Federal Register on December 16, 2004 (69 FR 75280), proposed to
require installation of bonding straps to the safe side harnesses of
the digital transient suppression device of the fuel quantity
indicating system.
Comments
We provided the public the opportunity to participate in the
development of this AD. No comments have been submitted on the proposed
AD or on the determination of the cost to the public.
Conclusion
We have carefully reviewed the available data and determined that
air safety and the public interest require adopting the AD as proposed.
Costs of Compliance
There are about 404 airplanes of the affected design in the
worldwide fleet. This AD affects about 2 airplanes of U.S. registry.
The actions take about 9 work hours per airplane, at an average labor
rate of $65 per work hour. For airplanes equipped with a Cinch
rectangular connector, required parts will cost about $1,650 per
airplane. For all other airplanes, required parts will cost about
$1,500 per airplane. Based on these figures, the estimated cost of the
AD for U.S. operators is between $2,085 and $2,235 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.
[[Page 12402]]
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):
2005-05-17 Boeing: Amendment 39-14006. Docket No. FAA-2004-19891;
Directorate Identifier 2004-NM-136-AD.
Effective Date
(a) This AD becomes effective April 18, 2005.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Boeing Model 737-300, -400, and -500
series airplanes; certificated in any category; modified in
accordance with Supplemental Type Certificate (STC) ST00127BO.
Unsafe Condition
(d) This AD was prompted by the results of fuel system reviews
conducted by the STC holder. We are issuing this AD to prevent
unsafe levels of current or energy from entering the fuel tank, due
to hot short faults or threat conditions associated with the safe
side harness assembly, which could result in a fire or explosion of
the fuel tank.
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.
Modification
(f) Within 12 months after the effective date of this AD, modify
the safe side harness connectors at the tank penetrations and the
digital transient suppression devices, in accordance with the
Accomplishment Instructions of Goodrich Service Bulletin 737-300766-
28-2, Revision 2, dated July 28, 2004.
Parts Installation
(g) As of the effective date of this AD, no person may install a
safe side harness, Part Number 50357-01XX, on any airplane, unless
that safe side harness has been modified in accordance with Goodrich
Service Bulletin 737-300766-28-2, Revision 2, dated July 28, 2004.
Alternative Methods of Compliance (AMOCs)
(h) The Manager, Boston Aircraft Certification Office, 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
(i) You must use Goodrich Service Bulletin 737-300766-28-2,
Revision 2, dated July 28, 2004, 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
this document in accordance with 5 U.S.C. 552(a) and 1 CFR part 51.
For copies of the service information, contact Goodrich Fuel &
Utility Systems, Goodrich Corporation, 100 Panton Road, Vergennes,
Vermont 05491. 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.
Issued in Renton, Washington, on March 2, 2005.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-4827 Filed 3-11-05; 8:45 am]
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