Airworthiness Directive · Amendment 39-15242 · Landing gear
Fokker Model F.28 Mark 0070 and 0100 Airplanes
This AD applies to Fokker Model F.28 Mark 0070 and 0100 airplanes; certificated in any category; all serial numbers, if equipped with Messier-Dowty main landing gear (MLG) units.
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 12 months after the effective date of this AD, replace each MLG wheel axle-nut and spacer with an integrated axle-nut/spacer assembly in accordance with the Accomplishment Instructions of Messier-Dowty Service Bulletin F100-32-72, Revision 1, dated March 5, 2007.
Note 1: Fokker 70/100 Service Letter 102, Revision 1, dated February 12, 1998; and Fokker Service Bulletin SBF100-32-096, Revision 2, dated April 29, 2005; also pertain to this subject.
(2) As of 12 months after the effective date of this AD, no person may install an axle nut having part number (P/N) 201072670 or alternate P/N 201072765, or any spacer having P/N 201072699, on any airplane. Only axle nut subassemblies having P/N 201251273 or P/N 201650216 may be installed.
(3) Actions accomplished before the effective date of this AD in accordance with Messier-Dowty Service Bulletin F100-32-72, dated January 25, 1995, are considered acceptable for compliance with the corresponding action specified in this AD.
Note 2: This AD differs from the MCAI and/or service information as follows: (1) The MCAI requires revising the AMM and IPC. As these documents are not FAA-approved, we do not require these revisions. Therefore, this AD requires compliance with paragraph (f)(2) of this AD, which accomplishes the intent of revising the AMM and IPC.
