[Federal Register: September 6, 2005 (Volume 70, Number 171)]
[Proposed Rules]
[Page 52947-52949]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr06se05-23]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2005-22290; Directorate Identifier 2005-NM-129-AD]
RIN 2120-AA64
Airworthiness Directives; BAE Systems (Operations) Limited
(Jetstream) Model 4101 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 (Jetstream) Model 4101
airplanes. This proposed AD would require modifying the wiring of the
starter-generator terminal block. This proposed AD results from a
report of total electrical failure just as the airplane landed. We are
proposing this AD to prevent total electrical failure and consequent
reduced controllability of the airplane.
DATES: We must receive comments on this proposed AD by October 6, 2005.
ADDRESSES: Use one of the following addresses to submit comments on
this proposed AD.
DOT Docket Web site: Go to
[[Page 52948]]
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. Include the docket number ``FAA-
2005-22290; Directorate Identifier 2005-NM-129-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 Civil Aviation Authority (CAA), which is the airworthiness
authority for the United Kingdom, notified us that an unsafe condition
may exist on all BAE Systems (Operations) Limited (Jetstream) Model
4101 airplanes. The CAA advises that a Model Jetstream 4101 airplane
had a total electrical failure just as the airplane landed. Although
investigations did not uncover all mechanisms that contributed to the
total electrical failure, investigators established that a significant
contributory factor was a chafed exciter wire to the positive terminal
of the starter-generator. The current routing of the small wiring at
the starter-generator terminal block has the potential for incorrect
routing and possible chafing and shorting against the stud of terminal
``B.'' The starter-generator is currently removed for overhaul at 600-
flight-hour intervals, and the wires can be damaged or misrouted during
removal and reinstallation. This condition, if not corrected, could
result in total electrical failure and consequent reduced
controllability of the airplane.
Relevant Service Information
BAE Systems (Operations) Limited has issued Service Bulletin J41-
24-041, dated May 10, 2004. The service bulletin describes procedures
for modifying the wiring of the starter-generator terminal block. For
airplanes on which modification JM41360 (a modification to the
electrical wiring) has not been incorporated, the procedures include
splicing and re-routing the wires. For airplanes on which modification
JM41360 has been incorporated, the procedures include re-routing the
wires. Accomplishing the actions specified in the service information
is intended to adequately address the unsafe condition. The CAA
mandated the service information and issued British airworthiness
directive G-2005-0006, dated February 7, 2005, to ensure the continued
airworthiness of these airplanes in the United Kingdom.
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. Pursuant
to this bilateral airworthiness agreement, the CAA has kept the FAA
informed of the situation described above. We have examined the CAA'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.
Therefore, we are proposing this AD, which would require
accomplishing the actions specified in the service information
described previously.
Costs of Compliance
This proposed AD would affect about 57 airplanes of U.S. registry.
The proposed actions would take about 10 work hours per airplane, at an
average labor rate of $65 per work hour. Based on these figures, the
estimated cost of the proposed AD for U.S. operators is $37,050, or
$650 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.
[[Page 52949]]
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-2005-22290; Directorate
Identifier 2005-NM-129-AD.
Comments Due Date
(a) The FAA must receive comments on this AD action by October
6, 2005.
Affected ADs
(b) None.
Applicability
(c) This AD applies to all BAE Systems (Operations) Limited
Model Jetstream 4101 airplanes, certificated in any category.
Unsafe Condition
(d) This AD results from a report of total electrical failure
just as the airplane landed. We are issuing this AD to prevent total
electrical failure and consequent reduced controllability of the
airplane.
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 wiring of the starter-generator terminal block in accordance
with the Accomplishment Instructions of BAE Systems (Operations)
Limited Service Bulletin J41-24-041, dated May 10, 2004.
Alternative Methods of Compliance (AMOCs)
(g) The Manager, 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-2005-0006, dated February
7, 2005, also addresses the subject of this AD.
Issued in Renton, Washington, on August 29, 2005.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 05-17610 Filed 9-2-05; 8:45 am]
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