[Federal Register: June 21, 2005 (Volume 70, Number 118)]
[Rules and Regulations]
[Page 35518-35519]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr21jn05-4]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2005-20757; Directorate Identifier 2004-NM-192-AD;
Amendment 39-14142; AD 2005-13-06]
RIN 2120-AA64
Airworthiness Directives; BAE Systems (Operations) Limited Model
BAe 146 and Avro 146-RJ 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
certain BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ
airplanes. This AD requires modifying the auxiliary power unit (APU)
exhaust duct in the environmental control system (ECS) bay; installing
new, improved insulation on this APU exhaust duct; and replacing the
existing drain pipe with a new exhaust drain pipe blank. This AD is
prompted by a determination that the temperature of the skin of the APU
exhaust duct in the ECS bay is higher than the certificated maximum
temperature for this area. We are issuing this AD to prevent the
potential for ignition of fuel or hydraulic fluid, which could leak
from pipes running through the ECS bay. Ignition of these flammable
fluids could result in a fire in the ECS bay.
DATES: This AD becomes effective July 26, 2005.
The incorporation by reference of a certain publication listed in
the AD is approved by the Director of the Federal Register as of July
26, 2005.
ADDRESSES: For service information identified in this AD, contact
British Aerospace Regional Aircraft American Support, 13850 Mclearen
Road, Herndon, Virginia 20171.
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-2005-20757; the directorate
identifier for this docket is 2004-NM-192-AD.
FOR FURTHER INFORMATION CONTACT: Dan Rodina, Aerospace Engineer,
International Branch, ANM-116, FAA, Transport Airplane Directorate,
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425)
227-2125; fax (425) 227-1149.
SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR part 39
with an AD for certain BAE Systems (Operations) Limited Model BAe 146
and Avro 146-RJ airplanes. That action, published in the Federal
Register on March 30, 2005 (70 FR 16185), proposed to require modifying
the auxiliary power unit (APU) exhaust duct in the environmental
control system bay; installing new, improved insulation on this APU
exhaust duct; and replacing the existing drain pipe with a new exhaust
drain pipe blank.
Explanation of Change to Applicability
We have revised the applicability of the proposed AD to identify
model designations as published in the most recent type certificate
data sheet for the affected models.
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 with the
change described previously. We have determined that this change will
neither increase the economic burden on any operator nor increase the
scope of the AD.
Costs of Compliance
This AD will affect about 65 airplanes of U.S. registry. The
actions will take about 1 work hour per airplane, at an average labor
rate of $65 per work hour. Required parts will cost about $3,766 per
airplane. Based on these figures, the estimated cost of the AD for U.S.
operators is $249,015, or $3,831 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
[[Page 35519]]
(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]
2. The FAA amends Sec. 39.13 by adding the following new
airworthiness directive (AD):
2005-13-06 Bae Systems (Operations) Limited (Formerly British
Aerospace Regional Aircraft): Amendment 39-14142. Docket No. FAA-
2005-20757; Directorate Identifier 2004-NM-192-AD.
Effective Date
(a) This AD becomes effective July 26, 2005.
Affected ADs
(b) None.
Applicability
(c) This AD applies to BAE Systems (Operations) Limited Model
BAe 146 and Avro 146-RJ airplanes, certificated in any category, on
which BAE Systems Modification HCM30373A, or BAE Systems
Modification HCM30373A and HCM36166C, are installed.
Unsafe Condition
(d) This AD was prompted by a determination that the temperature
of the skin of the auxiliary power unit (APU) exhaust duct in the
environmental control system (ECS) bay is higher than the
certificated maximum temperature for this area. We are issuing this
AD to prevent the potential for ignition of fuel or hydraulic fluid,
which could leak from pipes running through the ECS bay. Ignition of
these flammable fluids could result in a fire in the ECS bay.
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 6 months after the effective date of this AD: Modify
the APU exhaust duct in the ECS bay; install new, improved
insulation on this APU exhaust duct; and replace the existing drain
pipe with a new exhaust drain pipe blank; by doing all of the
actions in the Accomplishment Instructions of BAE Systems
(Operations) Limited Modification Service Bulletin SB.49-072-36244A,
dated October 11, 2004. Where the Accomplishment Instructions of the
service bulletin specify submitting an Advice Note to the
manufacturer, this AD does not require that action.
Alternative Methods of Compliance (AMOCs)
(g) The Manager, International Branch, ANM-116, Transport
Airplane Directorate, FAA, has the authority to approve AMOCs for
this AD, if requested in accordance with the procedures found in 14
CFR 39.19.
Related Information
(h) British airworthiness directive G-2004-0031, dated December
22, 2004, also addresses the subject of this AD.
Material Incorporated by Reference
(i) You must use BAE Systems (Operations) Limited Modification
Service Bulletin SB.49-072-36244A, dated October 11, 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. To get copies of the service
information, contact British Aerospace Regional Aircraft American
Support, 13850 Mclearen Road, Herndon, Virginia 20171. To view the
AD docket, go to the Docket Management Facility, U.S. Department of
Transportation, 400 Seventh Street SW., room PL-401, Nassif
Building, Washington, DC. To review copies of the service
information, go to the National Archives and Records Administration
(NARA). For information on the availability of this material at the
NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html
.
Issued in Renton, Washington, on June 9, 2005.
Michael J. Kaszycki,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-12004 Filed 6-20-05; 8:45 am]
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