Airworthiness directives › 95-24-12
AD 95-24-12 Airworthiness Directives; Jetstream Aircraft Limited Model 3201 Airplanes
Applicability*9
Model 3201 Airplanes (all serial numbers), 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 request approval for an alternative method of compliance in accordance with paragraph (e) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.
Compliance
Required as indicated in the body of this AD, unless already accomplished. To prevent the main landing gear (MLG) bay forward lower edge wing skin structure from cracking, which, if not detected and corrected, could cause failure of the wing structure and loss of control of the airplane, accomplish the following: (a) Upon accumulating 4,000 hours time-in-service (TIS) or within the next 200 hours TIS after the effective date of this AD, whichever occurs later, inspect the MLG bay forward lower edge wing skin structure adjacent to the main spar for cracks in accordance with the ACCOMPLISHMENT INSTRUCTIONS section of Jetstream Service Bulletin (SB) 57-A-JA920540, Original Issue September 1, 1992. (1) If cracks are found, prior to further flight, replace the existing doublers with joggled doublers of improved design in accordance with the ACCOMPLISHMENT INSTRUCTIONS section of Jetstream SB 57-A-JA920540, Original Issue September 1, 1992. (2) If no cracks are found, re-inspect the MLG bay forward lower edge wing skin structure at intervals not to exceed 600 hours TIS until modified as specified in paragraph (b) of this AD. (b) Upon accumulating 9,000 hours TIS or within the next 200 hours TIS after the effective date of this AD, whichever occurs later, unless already accomplished as specified in paragraph (a)(1) of this AD, replace the existing doublers with joggled doublers of improved design in accordance with the ACCOMPLISHMENT INSTRUCTIONS section of Jetstream SB 57-A-JA920540. (c) Replacing the joggled doublers as required by paragraph (a)(1) or (b) of this AD eliminates the repetitive inspection requirements of this AD. (d) 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. (e) An alternative method of compliance or adjustment of the initial or repetitive compliance times that provides an equivalent level of safety may be approved by the Manager, Brussels Aircraft Certification Office, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, B-1000 Brussels, Belgium. The request shall be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Brussels Aircraft Certification Office. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Brussels Aircraft Certification Office. (f) The inspection and modification required by this AD shall be done in accordance with SB 57-A-JA920540, Original Issue September 1, 1992. 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 Limited, Prestwick International Airport, Ayrshire, KA9 2RW, Scotland; or Jetstream Aircraft Inc., Librarian, P.O. Box 16029, Dulles International Airport, Washington DC 20041-6029. Copies may be inspected at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri, or at the Office of the Federal Register, 800 North Capitol Street, NW., 7th Floor, suite 700, Washington, DC. (g) This amendment (39-9442) becomes effective on January 9, 1996. Issued in Kansas City, Missouri, on November 17, 1995. Michael Gallagher, Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 95-30133 Filed 12-8-95; 8:45 am] BILLING CODE 4910-13-U
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