Airworthiness Directive · Amendment 39-18552 · Fuel
Fokker Services B.V. Airplanes
This AD applies to Fokker Services B.V. Model F.28 Mark 1000 airplanes; certificated in any category; serial numbers (S/Ns) 11003 through 11041 inclusive, and S/Ns 11991 and 11992.
We are superseding Airworthiness Directive (AD) 2011-17-10, for all Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 airplanes. AD 2011-17-10 required inspecting for a by-pass wire between the housing of each in-tank fuel quantity indication (FQI) cable plug and the cable shield, and corrective actions if necessary. AD 2011-17- 10 also required revising the airplane maintenance program. This new AD removes certain airplanes from the applicability. This new AD applies only to Model F.28 Mark 1000 airplanes and also requires revising the airplane maintenance or inspection program by incorporating the instructions in revised service information. This AD was prompted by the issuance of revised service information to update the critical design configuration control limitations (CDCCLs) that address potential ignition sources inside fuel tanks. We are issuing this AD to prevent potential ignition sources inside the fuel tanks, which, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane.
This paragraph restates the requirements of paragraph (g) of AD 2011-17-10, with revised service information. At a scheduled opening of the fuel tanks, but not later than 84 months after September 16, 2011 (the effective date of AD 2011-17-10), do a general visual inspection for the presence of a by-pass wire between the housing of each in-tank fuel quantity indication (FQI) cable plug and the cable shield, in accordance with Part 1 of the Accomplishment Instructions of Fokker Service Bulletin SBF28-28-053, Revision 1, dated September 20, 2010; or Fokker Service Bulletin SBF28-28-053, Revision 3, dated January 9, 2014. As of the effective date of this AD, only Fokker Service Bulletin SBF28-28-053, Revision 3, dated January 9, 2014, may be used.
This paragraph restates the requirements of paragraph (h) of AD 2011-17-10, with revised service information. If during the general visual inspection required by paragraph (g) of this AD, it is found that a by-pass wire is not installed: Before the next flight, install the by-pass wire between the housing of the in-tank FQI cable plug and the cable shield, in accordance with Part 2 of the Accomplishment Instructions of Fokker Service Bulletin SBF28-28-053, Revision 1, dated September 20, 2010; or Fokker Service Bulletin SBF28-28-053, Revision 3, dated January 9, 2014. As of the effective date of this AD, only Fokker Service Bulletin SBF28-28-053, Revision 3, dated January 9, 2014, may be used.
This paragraph restates the requirements of paragraph (i) of AD 2011-17-10, with a new exception. Except as required by paragraph (k) of this AD, concurrently with the actions required by paragraph (g) of this AD, revise the airplane maintenance program by incorporating CDCCL-1 specified in paragraph 1.L.(1)(c) of Fokker Service Bulletin SBF28-28-053, Revision 1, dated September 20, 2010.
This paragraph restates the requirements of paragraph (k) of AD 2011-17-10 with a new exception. Except as required by paragraph (k) of this AD: After accomplishing the revision required by paragraph (i) of this AD, no alternative actions (e.g., inspection, interval) and/or CDCCLs may be used unless the actions, intervals, and/or CDCCLs are approved as an alternative methods of compliance (AMOC) in accordance with the procedures specified in paragraph (n)(1) of this AD.
Within 30 days after the effective date of this AD: Revise the airplane maintenance or inspection program, as applicable, by incorporating CDCCL Item 1.7 as specified in paragraph 1.L.(1)(c) of Fokker Service Bulletin SBF28-28-053, Revision 3, dated January 9, 2014. Accomplishing the revision required by this paragraph terminates the revision required by paragraph (i) of this AD.
After the maintenance or inspection program has been revised as required by paragraph (k) of this AD, no alternative CDCCLs may be used unless the CDCCLs are approved as an AMOC in accordance with the procedures specified in paragraph (n)(1) of this AD.
