[Federal Register: July 13, 2006 (Volume 71, Number 134)]
[Proposed Rules]
[Page 39595-39597]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr13jy06-33]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2006-25337; Directorate Identifier 2006-NM-138-AD]
RIN 2120-AA64
Airworthiness Directives; BAE Systems (Operations) Limited Model
BAe 146 Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for all BAE Systems (Operations) Limited Model BAe 146 airplanes. This
proposed AD would require inspecting the three-phase circuit breakers
and three-phase circuit breaker panels for discrepancies; and fixing
any discrepancy and replacing unserviceable units with new units, if
necessary. This proposed AD results from reports of three-phase circuit
breakers overheating on in-service airplanes. We are proposing this AD
to prevent failure of a three-phase circuit breaker. Such failure could
prevent an electrical load from being isolated from its electrical
supply, which could result in smoke or fire in the flight deck.
DATES: We must receive comments on this proposed AD by August 14, 2006.
ADDRESSES: Use one of the following addresses to submit comments on
this proposed AD.
DOT Docket Web site: Go to http://dms.dot.gov and follow
the instructions for sending your comments electronically.
Government-wide rulemaking Web site: Go to http://www.regulations.gov
and follow the instructions for sending your
comments electronically.
Mail: Docket Management Facility, U.S. Department of
Transportation, 400 Seventh Street, SW., Nassif Building, room PL-401,
Washington, DC 20590.
Fax: (202) 493-2251.
Hand Delivery: Room PL-401 on the plaza level of the
Nassif Building, 400 Seventh Street, SW., Washington, DC, between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
Contact British Aerospace Regional Aircraft American Support, 13850
Mclearen Road, Herndon, Virginia 20171, for service information
identified in this proposed AD.
FOR FURTHER INFORMATION CONTACT: Todd Thompson, Aerospace Engineer,
International Branch, ANM-116, FAA, Transport Airplane Directorate,
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425)
227-1175; fax (425) 227-1149.
SUPPLEMENTARY INFORMATION:
Comments Invited
We invite you to submit any relevant written data, views, or
arguments regarding this proposed AD. Send your comments to an address
listed in the ADDRESSES section. Include the docket number ``FAA-2006-
25337; Directorate Identifier 2006-NM-138-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of the proposed AD. We will
consider all comments received by the closing date and may amend the
proposed AD in light of those comments.
We will post all comments we receive, without change, to http://dms.dot.gov
, including any personal information you provide. We will
also post a report summarizing each substantive verbal contact with FAA
personnel concerning this proposed AD. Using the search function of
that Web site, anyone can find and read the comments in any of our
dockets, including the name of the individual who sent the comment (or
signed the comment on behalf of an association, business, labor union,
etc.). You may review the DOT's complete Privacy Act Statement in the
Federal Register published on April 11, 2000 (65 FR 19477-78), or you
may visit http://dms.dot.gov.
Examining the Docket
You may 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 DOT
street address stated in the ADDRESSES section. Comments will be
available in the AD docket shortly after the Docket Management System
receives them.
Discussion
The European Aviation Safety Agency (EASA), which is the
airworthiness authority for the European Union, notified us that an
unsafe condition may exist on all BAE Systems (Operations) Limited
Model BAe 146 airplanes. The EASA advises that three-phase circuit
breakers, which are used at various locations throughout the airplane
(but predominantly in the under floor electrical bay and the flight
deck) have overheated on in-service airplanes. The possible cause of
the overheating is the age-related deterioration of the three-phase
circuit breakers. Failure of a three-phase circuit breaker, if not
corrected, could prevent an electrical load from being isolated from
its electrical supply, which could result in smoke or fire in the
flight deck.
Relevant Service Information
BAE Systems (Operations) Limited has issued Inspection Service
Bulletin ISB.24-141, dated August 15, 2005. The inspection service
bulletin describes procedures for performing a detailed visual
inspection of the three-phase circuit breakers and three-phase circuit
[[Page 39596]]
breaker panels for discrepancies (such as physical damage, cracks,
deterioration, corrosion, discoloration, contamination by foreign
objects, and missing or improperly installed terminal connections or
attachments), fixing any discrepancy and replacing unserviceable units
with new units, if necessary. Accomplishing the actions specified in
the service information is intended to adequately address the unsafe
condition. The EASA mandated the service information and issued
airworthiness directive 2006-0132, dated May 18, 2006, to ensure the
continued airworthiness of these airplanes in the European Union.
FAA's Determination and Requirements of the Proposed AD
This airplane model is manufactured in the United Kingdom and is
type certificated for operation in the United States under the
provisions of section 21.29 of the Federal Aviation Regulations (14 CFR
21.29) and the applicable bilateral airworthiness agreement. As
described in FAA Order 8100.14A, ``Interim Procedures for Working with
the European Community on Airworthiness Certification and Continued
Airworthiness,'' dated August 12, 2005, the EASA has kept the FAA
informed of the situation described above. We have examined the EASA's
findings, evaluated all pertinent information, and determined that we
need to issue an AD for airplanes of this type design that are
certificated for operation in the United States.
Clarification of Inspection Terminology
In this proposed AD, the ``detailed visual inspection'' specified
in the BAE Systems (Operations) Limited inspection service bulletin is
referred to as a ``detailed inspection.'' We have included the
definition for a detailed inspection in a note in the proposed AD.
Costs of Compliance
This proposed AD would affect about 368 airplanes of U.S. registry.
The proposed inspection would take about 5 work hours per airplane, at
an average labor rate of $80 per work hour. Based on these figures, the
estimated cost of the proposed AD for U.S. operators is $147,200, or
$400 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 proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 the 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. 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 proposed AD and placed it in the AD docket. 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, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
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 Federal Aviation Administration (FAA) amends Sec. 39.13 by
adding the following new airworthiness directive (AD):
BAE Systems (Operations) Limited (Formerly British Aerospace
Regional Aircraft): Docket No. FAA-2006-25337; Directorate
Identifier 2006-NM-138-AD.
Comments Due Date
(a) The FAA must receive comments on this AD action by August
14, 2006.
Affected ADs
(b) None.
Applicability
(c) This AD applies to all BAE Systems (Operations) Limited
Model BAe 146-100A, -200A, and -300A series airplanes, certificated
in any category.
Unsafe Condition
(d) This AD results from reports of three-phase circuit breakers
overheating on in-service airplanes. We are issuing this AD to
prevent failure of a three-phase circuit breaker. Such failure could
prevent an electrical load from being isolated from its electrical
supply, which could result in smoke or fire in the flight deck.
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.
Detailed Inspection and Corrective Actions
(f) Within 12 months after the effective date of this AD, do a
detailed inspection of the three-phase circuit breakers and three-
phase circuit breaker panels for discrepancies (including but not
limited to physical damage, cracks, deterioration, corrosion,
discoloration, contamination by foreign objects, and missing or
improperly installed terminal connections or attachments), in
accordance with the Accomplishment Instructions of BAE Systems
(Operations) Limited Inspection Service Bulletin ISB.24-141, dated
August 15, 2005. If any discrepancy is found, before further flight,
fix the discrepancy and replace unserviceable units with new units,
as applicable, in accordance with the inspection service bulletin.
Note 1: For the purposes of this AD, a detailed inspection is:
``An intensive examination of a specific item, installation, or
assembly to detect damage, failure, or irregularity. Available
lighting is normally supplemented with a direct source of good
lighting at an intensity deemed appropriate. Inspection aids such as
mirror, magnifying lenses, etc., may be necessary. Surface cleaning
and elaborate procedures may be required.''
No Reporting
(g) Although the inspection service bulletin referenced in this
AD specifies to submit certain information to the manufacturer, this
AD does not include that requirement.
Alternative Methods of Compliance (AMOCs)
(h)(1) 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.
[[Page 39597]]
(2) Before using any AMOC approved in accordance with Sec.
39.19 on any airplane to which the AMOC applies, notify the
appropriate principal inspector in the FAA Flight Standards
Certificate Holding District Office.
Related Information
(i) The European Aviation Safety Agency airworthiness directive
2006-0132, dated May 18, 2006, also addresses the subject of this
AD.
Issued in Renton, Washington, on July 6, 2006.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E6-11022 Filed 7-12-06; 8:45 am]
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