AD 92-11-02

92-11-02 AEROSPATIALE: Amendment 39-8252. Docket No. 92-NM-03-AD.

Applicability: Aerospatiale Model SN 601 Corvette series airplanes, certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To prevent a reduction in the structural integrity of the fuselage, accomplish the following:

(a) Prior to the accumulation of 14,100 flight cycles or within the next 100 flight cycles after the effective date of this AD, whichever occurs later, perform a high frequency eddy current inspection to detect cracks in the left-hand (LH) and right hand (RH) side canopy inner skins forward of Frame 10 at the height of Stringer 4, in accordance with Aerospatiale Service Bulletin 53-26, dated January 24, 1991.

(b) Repeat the inspection required by paragraph (a) of this AD at intervals not to exceed 5,600 flight cycles.

(c) If cracks are detected as a result of the inspection required by paragraphs (a) or (b) of this AD, prior to further flight, install Modification 1395 in accordance with Aerospatiale Service Bulletin No. 53-14, Revision 1, dated January 24, 1991.

(d) Accomplishment of Modification 1395, in accordance with Aerospatiale Service Bulletin No. 53-14, Revision 1, dated January 24, 1991, constitutes terminating action for the inspection requirements of this AD.

(e) An alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate. The request shall be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Standardization Branch, ANM-113.

(f) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished.

(g) The inspections shall be done in accordance with Aerospatiale Service Bulletin 53- 26, dated January 24, 1991. The modifications shall be done in accordance with Aerospatiale Service Bulletin No. 53-14, Revision 1, dated January 24, 1991, which includes the following list of effective pages:

Page Numbers Revision Level Date 1, 3 1 January 24, 1991 2, 4-6 Original June 23, 1983

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 Aerospatiale, 316 Route de Bayonne, 31060, Toulouse, Cedex 03, France. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington; or at the Office of the Federal Register, 1100 L Street NW., Room 8401, Washington, DC.

(h) This amendment becomes effective on July 23, 1992.