Airworthiness Directive · Amendment 39-15459 · Landing gear
Saab Model SAAB-Fairchild SF340A (SAAB/SF340A) and SAAB 340B Airplanes
This AD applies to the airplanes listed in paragraphs (c)(1) and (c)(2) of this AD, certificated in any category, unless equipped with main landing gear (MLG) shock struts modified in accordance with APPH Service Bulletin AIR83064-32-12 or AIR83022-32-32.
(1) Saab Model SAAB-Fairchild SF340A (SAAB/SF340A) airplanes, serial numbers (S/Ns) SF340A-004 through -159.
(2) Saab Model SAAB 340B airplanes, S/Ns 340B-160 through -459.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions.
(1) Within 8,000 flight cycles since the last MLG overhaul, or within 1,500 flight cycles, or 6 months after the effective date of this AD, whichever occurs latest: Inspect the MLG in accordance with the Accomplishment Instructions of Saab Service Bulletin 340-32-133, Revision 01, dated May 3, 2006. If any crack is found, before further flight: Replace the axle adaptor in accordance with the Accomplishment Instructions of Saab Service Bulletin 340-32-133, Revision 01, dated May 3, 2006.
(2) Repeat the inspection required by paragraph (f)(1) of this AD thereafter at intervals not to exceed 2,000 flight cycles until the terminating action required by paragraph (f)(3) of this AD is accomplished.
(3) Within 12,000 flight cycles after the effective date of this AD, or at the next MLG overhaul, whichever occurs earlier: Inspect and modify the MLG shock strut and axle adaptors in accordance with the Accomplishment Instructions of APPH Service Bulletin AIR83064-32-12, Revision 3, dated April 26, 2006; or AIR83022-32-32, Revision 3, dated April 26, 2006; as applicable.
(4) Actions done before the effective date of this AD in accordance with the service bulletins listed in paragraphs (f)(4)(i), (f)(4)(ii), and (f)(4)(iii) of this AD, as applicable, are acceptable for compliance with the corresponding actions in this AD.
(i) Saab Service Bulletin 340-32-133, dated April 19, 2006.
(ii) APPH Service Bulletin AIR83064-32-12, dated January 2006; Revision 1, dated January 23, 2006; and Revision 2, dated March 30, 2006.
(iii) APPH Service Bulletin AIR83022-32-32, dated January 2006; Revision 1, dated January 23, 2006; and Revision 2, dated March 30, 2006.
(5) As of the effective date of this AD, no person may install an MLG shock strut having part number (P/N) AIR83022 or AIR83064, or axle adaptor having P/N AIR127308, AIR390226, or AIR130238, unless it has been inspected and modified in accordance with APPH Service Bulletin AIR83022-32-32 or AIR83064-32-12, as specified in paragraph (f)(3), (f)(4)(ii), or (f)(4)(iii) of this AD, as applicable.
Note: This AD differs from the MCAI and/or service information as follows: No differences.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
