Airworthiness Directives; BAE Systems (Operations) Limited (Jetstream) Model 4101 Airplanes

[Federal Register Volume 70, Number 73 (Monday, April 18, 2005)]
[Rules and Regulations]
[Pages 20045-20046]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-7482]



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Federal Register / Vol. 70, No. 73 / Monday, April 18, 2005 / Rules 
and Regulations

[[Page 20045]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2004-19766; Directorate Identifier 2002-NM-161-AD; 
Amendment 39-14057; AD 2005-08-05]
RIN 2120-AA64


Airworthiness Directives; BAE Systems (Operations) Limited 
(Jetstream) Model 4101 Airplanes

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

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all 
BAE Systems (Operations) Limited (Jetstream) Model 4101 airplanes. This 
AD requires replacing the aileron trim chain with a new, improved 
aileron trim chain, and modifying the installation of the aileron trim 
chain. This AD is prompted by a report that the aileron trim cables 
were connected incorrectly on a correctly installed aileron trim chain. 
We are issuing this AD to prevent incorrect connection of the aileron 
trim cables, which could result in failure of the aileron trim system 
and consequent reduced controllability of the airplane.

DATES: This AD becomes effective May 23, 2005.
    The incorporation by reference of a certain publication listed in 
the AD is approved by the Director of the Federal Register as of May 
23, 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-2004-19766; the directorate 
identifier for this docket is 2002-NM-161-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: The FAA proposed to amend 14 CFR part 39 
with an AD for all BAE Systems (Operations) Limited (Jetstream) Model 
4101 airplanes. That action, published in the Federal Register on 
December 8, 2004 (69 FR 70938), proposed to require replacing the 
aileron trim chain with a new, improved aileron trim chain, and 
modifying the installation of the aileron trim chain.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We have considered the comments that have been 
submitted on the proposed AD.

Support for the Proposed AD

    One commenter supports the proposed AD.

Request To Revise Compliance Time

    One commenter, the airplane manufacturer, requests that we revise 
the proposed AD to require installing modified aileron trim chains at 
the next time the aileron trim circuit is broken down, but not later 
than 30 months after the effective date of the AD. The proposed AD 
requires compliance within 30 months after the effective date of the 
AD. The commenter states that disassembly of the aileron trim circuit 
introduces the risk of incorrect installation (cross-connection) during 
re-assembly. This is the reason why British airworthiness directive 
006-11-2001 requires compliance ``not later than the next aileron trim 
circuit break down, or by 31 March 2005, whichever is the sooner.''
    We do not concur with the commenter's request. In developing a 
compliance time for this AD, we considered the urgency associated with 
the subject unsafe condition, the manufacturer's recommendation, and 
the practical aspect of accomplishing the required modification within 
a period of time that corresponds to the normal scheduled maintenance 
for most affected operators. As we explained in the proposed AD, a 
compliance time of 30 months after the effective date of the AD is 
comparable in length to the compliance time in the British 
airworthiness directive, will allow the majority of operators 
sufficient time to accomplish the proposed action during a regularly 
scheduled maintenance visit, and will not compromise safety. We have 
not changed this AD in this regard.

Conclusion

    We have carefully reviewed the available data, including the 
comments that have been submitted, and determined that air safety and 
the public interest require adopting the AD as proposed.

Costs of Compliance

    This AD will affect about 57 airplanes of U.S. registry. The 
required actions will take about 36 work hours per airplane, at an 
average labor rate of $65 per work hour. Required parts will cost about 
$2,500 per airplane. Based on these figures, the estimated cost of the 
AD for U.S. operators is $275,880, or $4,840 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

[[Page 20046]]

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):

2005-08-05 BAE Systems (Operations) Limited (Formerly British 
Aerospace Regional Aircraft): Amendment 39-14057. Docket No. FAA-
2004-19766; Directorate Identifier 2002-NM-161-AD.

Effective Date

    (a) This AD becomes effective May 23, 2005.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to all BAE Systems (Operations) Limited 
(Jetstream) Model 4101 airplanes, certificated in any category.

Unsafe Condition

    (d) This AD was prompted by a report that the aileron trim 
cables can be connected incorrectly on a correctly installed aileron 
trim chain. We are issuing this AD to prevent incorrect connection 
of the aileron trim cables, which could result in failure of the 
aileron trim system 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.

Replacement of Aileron Trim Chain and Modification of Installation

    (f) Within 30 months after the effective date of this AD: 
Replace the aileron trim chain, part number (P/N) 14127003-401, with 
a new, improved aileron trim chain, P/N 14127003-403; and modify the 
installation of the aileron trim chain; according to the 
Accomplishment Instructions of BAE Systems (Operations) Limited 
Service Bulletin J41-27-061, Revision 1, dated July 12, 2002.

Actions Accomplished According to Previous Issue of Service Bulletin

    (g) Replacements and modifications accomplished before the 
effective date of this AD according to BAE Systems (Operations) 
Limited Service Bulletin J41-27-061, dated November 7, 2001, are 
considered acceptable for compliance with the corresponding actions 
specified in this AD.

No Reporting Requirement

    (h) Although the service bulletin referenced in this AD 
specifies to report compliance information to the manufacturer, this 
AD does not include that requirement.

Alternative Methods of Compliance (AMOCs)

    (i) 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

    (j) British airworthiness directive 006-11-2001 also addresses 
the subject of this AD.

Material Incorporated by Reference

    (k) You must use BAE Systems (Operations) Limited Service 
Bulletin J41-27-061, Revision 1, dated July 12, 2002, 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, go to 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. 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 April 5, 2005.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 05-7482 Filed 4-15-05; 8:45 am]
BILLING CODE 4910-13-P

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