Airworthiness Directives; Gulfstream Aerospace LP Model Gulfstream 100 Airplanes; and Model Astra SPX and 1125 Westwind Astra Series Airplanes

[Federal Register Volume 70, Number 4 (Thursday, January 6, 2005)]
[Rules and Regulations]
[Pages 1180-1182]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 05-284]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2004-19138; Directorate Identifier 2004-NM-102-AD; 
Amendment 39-13888; AD 2004-25-01]
RIN 2120-AA64


Airworthiness Directives; Gulfstream Aerospace LP Model 
Gulfstream 100 Airplanes; and Model Astra SPX and 1125 Westwind Astra 
Series 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 Gulfstream Aerospace LP Model Gulfstream 100 airplanes; and 
Model Astra SPX and 1125 Westwind Astra series airplanes. This AD 
requires adjusting the ground contact switches of the main landing 
gear. This AD is prompted by two occurrences of uncommanded deployments 
of the ground airbrakes during descent. We are issuing this AD to 
prevent a false ``Ground'' position signal, which could result in 
deployment of the ground airbrakes and reduced controllability of the 
airplane.

DATES: This AD becomes effective February 10, 2005.
    The incorporation by reference of a certain publication listed in 
the AD is approved by the Director of the Federal Register as of 
February 10, 2005.

ADDRESSES: For service information identified in this AD, contact 
Gulfstream Aerospace Corporation, P.O. Box 2206, Mail Station D-25, 
Savannah, Georgia 31402. You can examine this information at the 
National Archives and Records Administration (NARA). For information on 
the availability of this material at NARA, call (202) 741-6030, or go 
to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
    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,

[[Page 1181]]

Washington, DC. This docket number is FAA-2004-19138; the directorate 
identifier for this docket is 2004-NM-102-AD.

FOR FURTHER INFORMATION CONTACT:
    Technical information: 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.
    Plain language information: Marcia Walters, [email protected].

SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR part 39 
with an AD for certain Gulfstream Aerospace LP Model Gulfstream 100 
airplanes; and Model Astra SPX and 1125 Westwind Astra series 
airplanes. That action, published in the Federal Register on October 4, 
2004 (69 FR 59147), proposed to require adjusting the ground contact 
switches of the main landing gear.

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 as proposed.

Costs of Compliance

    This AD will affect about 106 airplanes of U.S. registry. The 
actions will take about 3 work hours per airplane, at an average labor 
rate of $65 per work hour. Based on these figures, the estimated cost 
of the AD for U.S. operators is $20,670, or $195 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. 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):

2004-25-01 Gulfstream Aerospace LP (Formerly Israel Aircraft 
Industries, Ltd.): Amendment 39-13888. Docket No. FAA-2004-19138; 
Directorate Identifier 2004-NM-102-AD.

Effective Date

    (a) This AD becomes effective February 10, 2005.

Affected ADs

    (b) None.

Applicability

    (c) This AD applies to Gulfstream Aerospace LP Model Gulfstream 
100 airplanes; and Model Astra SPX and 1125 Westwind Astra series 
airplanes; serial numbers 004 through 127 inclusive; certificated in 
any category.

Unsafe Condition

    (d) This AD was prompted by two occurrences of uncommanded 
deployments of the ground airbrakes during descent. We are issuing 
this AD to prevent a false ``Ground'' position signal, which could 
result in deployment of the ground airbrakes and 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.

Corrective Action

    (f) Within 250 flight hours after the effective date of this AD, 
adjust the ground contact switches of the left and right main 
landing gear, in accordance with the Accomplishment Instructions of 
Gulfstream Alert Service Bulletin 1125-32A-233, Revision 1, dated 
August 1, 2003. Although the 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)

    (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) Israeli airworthiness directive 32-03-08-05, dated September 
4, 2003, also addresses the subject of this AD.

Material Incorporated by Reference

    (i) You must use Gulfstream Alert Service Bulletin 1125-32A-233, 
Revision 1, dated August 1, 2003, 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. 
For copies of the service information, contact Gulfstream Aerospace 
Corporation, P.O. Box 2206, Mail Station D-25, Savannah, Georgia 
31402. For information on the availability of this material at the 
National Archives and Records Administration (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.


[[Page 1182]]


    Issued in Renton, Washington, on December 29, 2004.
Kevin M. Mullin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 05-284 Filed 1-5-05; 8:45 am]
BILLING CODE 4910-13-P

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