Airworthiness Directive · Amendment 39-17660 · Fuel
Fokker Services B.V. Airplanes
This AD applies to Fokker Services B.V. Model F.28 Mark 0070 and 0100 airplanes, certificated in any category, all serial numbers.
We are adopting a new airworthiness directive (AD) for all Fokker Services B.V. Model F.28 Mark 0070 and 0100 airplanes. This AD was prompted by a design review, which revealed that, under certain failure conditions, wiring in the main fuel tank could develop a short circuit that might cause a hot spot on the wiring conduit or puncture the wiring conduit wall. This AD requires installing fuses in the power supply wiring and/or return wiring for various components in the fuel system; and revising the airplane maintenance program by incorporating critical design configuration control limitations. We are issuing this AD to prevent an ignition source in the main fuel tank vapor space, which could result in a fuel tank explosion and consequent loss of the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 24 months after the effective date of this AD: Install fuses in the power supply wiring and return wiring, as applicable, for the reed-switches in the main fuel tank overflow valve, level control pilot valve solenoid, re/de-fuel shut off valve solenoid, and the collector-tank low level float switch, in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF100-28-068, dated August 10, 2012, including the drawings specified in paragraphs (g)(1) through (g)(3) of this AD and the manual change notification specified in paragraph (g)(4) of this AD.
(1) Fokker Drawing W41192, Sheet 051, Issue AS (the issue date is not specified on the drawing).
(2) Fokker Drawing W41208, Sheet 002, Issue B (the issue date is not specified on the drawing).
(3) Fokker Drawing W59520, Sheet 002, Issue E, dated March 18, 2011.
(4) Fokker Manual Change Notification MCNM F100-143, dated August 10, 2012.
After installing the fuses as required by paragraph (g) of this AD, before further flight, revise the maintenance or inspection program, as applicable, by incorporating the critical design configuration control limitations (CDCCLs) specified in paragraph 1.L.(1)(c) of Fokker Service Bulletin SBF100-28-068, dated August 10, 2012, including the drawings specified in paragraphs (h)(1) through (h)(3) of this AD and the manual change notification specified in paragraph (h)(4) of this AD.
(1) Fokker Drawing W41192, Sheet 051, Issue AS (the issue date is not specified on the drawing).
(2) Fokker Drawing W41208, Sheet 002, Issue B (the issue date is not specified on the drawing).
(3) Fokker Drawing W59520, Sheet 002, Issue E, dated March 18, 2011.
(4) Fokker Manual Change Notification MCNM F100-143, dated August 10, 2012.
After the CDCCLs have been incorporated, as required by paragraph (h) of this AD, no alternative CDCCLs may be used unless the CDCCLs are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (j) of this AD.
