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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39 [60 FR 39635 NO. 149 8/3/95]
Docket No. 95-NM-129-AD; Amendment 39-9329; AD 95-16-09
Airworthiness Directives; Jetstream Model BAe ATP Airplanes
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95-16-09 JETSTREAM AIRCRAFT LIMITED (Formerly British Aerospace Commercial Aircraft, Limited.): Amendment 39-9329. Docket 95-NM-129-AD.
Applicability: Model BAe ATP airplanes having constructor's numbers 2002 through 2056 inclusive, certificated in any category.
NOTE 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must use the authority provided in paragraph (b) of this AD to request approval from the FAA. This approval may address either no action, if the current configuration eliminates the unsafe condition; or different actions necessary to address the unsafe condition described in this AD. Such a request should include an assessment of the effect of the changed configuration on the unsafe condition addressed by this AD. In no case does the presence of any modification, alteration, or repair remove any airplane from the applicability of this AD.
Compliance: Required as indicated, unless accomplished previously.
To prevent the flightcrew from being unaware that unfiltered oil is being circulated through the engine, which may result in a precautionary shutdown of the engine due to the circulation of contaminants in unfiltered oil, accomplish the following:
(a) Within 60 days after the effective date of this AD, modify the wiring connections at the switches of the scavenge oil filter of the reduction gearbox (RGB) and of the pressure oil filter, of both the left and right engines, in accordance with Jetstream BAe ATP Service Bulletin ATP-79-25-10382A, Revision 1, dated May 25, 1995.
(b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Standardization Branch, ANM-113.
NOTE 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch, ANM-113.
(c) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished.
(d) The modification shall be done in accordance with Jetstream Aircraft Limited BAe ATP Service Bulletin ATP-79-25-10382A, Revision 1, dated May 25, 1995, which contains the following effective pages:
Page number | Revision Level
Shown on page | Date
Shown on page |
| 1, 3, 7 | 1 | May 25, 1995 |
| 2, 4-6, 8-13 | Original | February 10, 1995 |
This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Jetstream Aircraft, Inc., P.O. Box 16029, Dulles International Airport, Washington, DC 20041-6029. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC.
(e) This amendment becomes effective on August 18, 1995.
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