2002-01-26: Bolts on Engine Inlet Cowl and Aft Nacelle Attachment Flanges

2002-01-26 Israel Aircraft Industries, Ltd.: Amendment 39-12621. Docket 2001-NM-200-AD. Applicability: All Model 1124 and 1124A series airplanes, and Model 1125 Westwind Astra series airplanes having serial numbers 004 through 072 inclusive and 074 through 078 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 request approval for an alternative method of compliance in accordance with paragraph (b) 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, unless accomplished previously. To prevent failure of attachment bolts due to fatigue, which could result in separation of the engine inlet cowl and aft nacelle, and consequent damage to the horizontal or vertical stabilizer, accomplish the following: Inspection and Replacement, if Necessary (a) Within 50 flight hours from the effective date of this AD, perform a one-time inspection of the bolts installed on the engine inlet cowl and aft nacelle attachment flanges to verify correct part numbers of the bolts. Before further flight, replace any discrepant bolts with the correct bolts, per 1124-Westwind (Israeli Aircraft Industries) Alert Service Bulletin 1124-54A-138, and Astra (Israeli Aircraft Industries) Alert Service Bulletin 1125-54A-247, both dated March 29, 2001; as applicable. Alternative Methods of Compliance (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, International Branch, ANM-116, Transport Airplane Directorate, FAA. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, International Branch, ANM-116. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the International Branch, ANM-116. Special Flight Permits (c) Special flight permits may be issued in accordance with Secs. 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. Incorporation by Reference (d) The actions shall be done in accordance with 1124-Westwind (Israeli Aircraft Industries) Alert Service Bulletin 1124-54A-138, dated March 29, 2001; and Astra (Israeli Aircraft Industries) Alert Service Bulletin 1125-54A-247, dated March 29, 2001; as applicable. 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 Galaxy Aerospace Corporation, One Galaxy Way, Fort Worth Alliance Airport, Fort Worth, Texas 76177. 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. Note 3: The subject of this AD is addressed in Israeli airworthiness directive 54-01-05-02, dated May 13, 2001. Effective Date (e) This amendment becomes effective on March 7, 2002.