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

[Federal Register Volume 70, Number 238 (Tuesday, December 13, 2005)]
[Rules and Regulations]
[Pages 73583-73585]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-23830]


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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; 
Amendment 39-14407; AD 2005-25-14]
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.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all 
BAE Systems (Operations) Limited (Jetstream) Model 4101 airplanes. This 
AD requires modifying the wiring of the starter-generator terminal 
block. 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.

DATES: This AD becomes effective January 17, 2006.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in the AD as of January 17, 
2006.

ADDRESSES: You may examine the AD docket on the Internet at http://dms.dot.gov or in person at the Docket Management Facility, U.S. 
Department of Transportation, 400 Seventh Street, SW., Nassif Building, 
room PL-401, Washington, DC.
    Contact British Aerospace Regional Aircraft American Support, 13850 
Mclearen Road, Herndon, Virginia 20171, for service information 
identified in this 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:

Examining the Docket

    You may examine the airworthiness directive (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

[[Page 73584]]

the street address stated in the ADDRESSES section.

Discussion

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 to include an AD that would apply to all BAE Systems 
(Operations) Limited (Jetstream) Model 4101 airplanes. That NPRM was 
published in the Federal Register on September 6, 2005 (70 FR 52947). 
That NPRM proposed to require modifying the wiring of the starter-
generator terminal block.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We have considered the comments received.

Support for the NPRM and Request for Further Information About 
Alternative Methods of Compliance (AMOCs)

    One commenter concurs with our decision to act on the 
manufacturer's proposed solution to the unsafe condition. The commenter 
also requests information about what kinds of AMOCs we will find 
acceptable for compliance with the actions required by the final rule.
    It is difficult to describe the specific types of AMOCs that we 
will find acceptable for compliance with this AD because AMOCs vary 
according to the airplane operator, and cannot be predicted until we 
receive a written request. In general, AMOCs are different approaches 
or techniques that are not specified in an AD that can, after our 
approval, be used to correct an unsafe condition on an aircraft or 
aircraft product. The AMOC must be acceptable to accomplish the intent 
of the AD, provide an acceptable level of safety, and have sufficient 
technical justification so that we can evaluate the request. For 
example, a compliance time that differs from the requirements of the AD 
can be approved if the revised time period in combination with other 
mitigating actions provides an acceptable level of safety for the 
requirements of the AD. The purpose of AMOCs is to ensure the most 
efficient method of compliance for individual operators and also to 
eliminate the need for constant AD revisions when acceptable methods 
are developed for AD compliance.
    It is not necessary to change the final rule in this regard.

Clarification of AMOC Paragraph

    We have revised this action to clarify the appropriate procedure 
for notifying the principal inspector before using any approved AMOC on 
any airplane to which the AMOC applies.

Conclusion

    We have carefully reviewed the available data, including the 
comments received, 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 affects about 57 airplanes of U.S. registry. The actions 
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 this 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 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 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, 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 Federal Aviation Administration (FAA) amends Sec.  39.13 by 
adding the following new airworthiness directive (AD):

2005-25-14 BAE Systems (Operations) Limited (Formerly British 
Aerospace Regional Aircraft): Amendment 39-14407. Docket No. FAA-
2005-22290; Directorate Identifier 2005-NM-129-AD.

Effective Date

    (a) This AD becomes effective January 17, 2006.

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)(1) The Manager, International Branch, ANM-116, Transport 
Airplane Directorate,

[[Page 73585]]

FAA, has the authority to approve AMOCs for this AD, if requested in 
accordance with the procedures found in 14 CFR 39.19.
    (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

    (h) British airworthiness directive G-2005-0006, dated February 
7, 2005, also addresses the subject of this AD.

Material Incorporated by Reference

    (i) You must use BAE Systems (Operations) Limited Service 
Bulletin J41-24-041, dated May 10, 2004, to perform the actions that 
are required by this AD, unless the AD specifies otherwise. The 
Director of the Federal Register approved the incorporation by 
reference of this document in accordance with 5 U.S.C. 552(a) and 1 
CFR part 51. Contact British Aerospace Regional Aircraft American 
Support, 13850 Mclearen Road, Herndon, Virginia 20171, for a copy of 
this service information. You may review copies at the Docket 
Management Facility, U.S. Department of Transportation, 400 Seventh 
Street, SW., room PL-401, Nassif Building, Washington, DC; on the 
Internet at http://dms.dot.gov; or at 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 December 2, 2005.
Kalene C. Yanamura,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 05-23830 Filed 12-12-05; 8:45 am]
BILLING CODE 4910-13-P

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