Airworthiness Directive · Amendment 39-17199 · Fuel
Fokker Services B.V. Airplanes
This AD applies to Fokker Services B.V. Model F.28 Mark 0100 airplanes; certificated in any category; serial numbers 11257, 11258, 11261, 11262, 11264, 11265, 11266, 11284, 11285, 11287, 11288, 11290, 11292, 11294, 11296, 11298, 11299, 11301, 11302, 11304, 11305, 11307, 11309, 11311, 11315, 11317, 11319, 11320, 11322, 11336, 11339, 11341 through 11344 inclusive, 11347, 11348, 11350, 11351, 11362, 11363, 11364, 11371, 11374, 11375, 11382, 11383, 11384, 11389, 11390, 11394, 11400, 11401, 11409, 11410, 11420 through 11424 inclusive, 11429, 11430, 11431, 11433, 11441 through 11456 inclusive, 11461, 11462, 11463, 11470 through 11475 inclusive, 11477, 11484, 11485, 11486, 11488, 11489, 11496, 11497, 11500, 11503, 11505, 11511, 11512, 11516, 11517, 11518, and 11527.
We are superseding two existing airworthiness directives (ADs) for certain Fokker Services B.V. Model F.28 Mark 0100 airplanes. The first existing AD currently requires removing the actuator from the fuel-balance transfer-valve (FBTV) and installing a locking device on the FBTV. The second existing AD currently requires inspecting to verify that the position indicator of the FBTV is in the closed position and deactivating the fuel-balance transfer-system. This new AD requires installing an FBTV locking device. This AD was prompted by reports that the FBTV was inadvertently reactivated after required de- activation measures were undone. We are issuing this AD to prevent fuel starvation and a consequent double-engine flameout, possibly resulting in a forced landing, damage to the airplane, and injury to occupants.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
This paragraph restates the requirements of paragraph (a) of AD 94-14-05, Amendment 39-8957 (59 FR 35237, July 11, 1994). For airplanes having serial numbers 11443, 11446 through 11449 inclusive, and 11456: Within 30 days after August 10, 1994 (the effective date of AD 94-14-05), remove the actuator from the FBTV, part number (P/N) 7933141J and install a locking device on the FBTV, in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF100-28-029, Revision 1, dated November 30, 1993.
(1) This paragraph restates the requirements of paragraphs (a) and (b) of AD 96-07-06, Amendment 39-9555 (61 FR 14014, March 29, 1996). For airplanes identified in Fokker Service Bulletin SBF100-28-030, Revision 1, dated December 5, 1994: After April 29, 1996 (the effective date of AD 96-07-06), whenever the fuel balance transfer system (FBTS) is used during maintenance, prior to further flight, perform an inspection to verify that the position indicator of the FBTV is in the closed position, in accordance with Fokker Service Bulletin SBF100-28-030, Revision 1, dated December 5, 1994. The inspection requirements of this paragraph must be accomplished until the deactivation required by paragraph (h)(2) of this AD is accomplished.
(i) If the position indicator is in the closed position, no further action is required by this paragraph.
(ii) If the position indicator is in the open position, close the FBTV, in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF100-28-030, Revision 1, dated December 5, 1994.
(2) Within 90 days after April 29, 1996 (the effective date of AD 96-07-06, Amendment 39-9555 (61 FR 14014, March 29, 1996)), deactivate the FBTS in accordance with either Part 2 or Part 3, as applicable, of the Accomplishment Instructions of Fokker Service Bulletin SBF100-28-030, Revision 1, dated December 5, 1994. Accomplishment of the deactivation constitutes terminating action for the repetitive inspection requirements of paragraph (h)(1) of this AD.
Within 12 months after the effective date of this AD, modify the airplane by installing an FBTV locking device, in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF100-28-066, dated June 30, 2011, which includes the attachments identified in paragraphs (i)(1) through (i)(5) of this AD (* the issue date is not specified on the drawing.)
(1) Fokker Manual Change Notification—Maintenance Documentation MCNM-F100-145, dated June 30, 2011.
(2) Fokker Manual Change Notification—Operational Documentation MCNO-F100-059, dated June 30, 2011.
(3) Fokker Drawing W41190, Sheet 013, Issue P*.
(4) Fokker Drawing W41190, Sheet 014, Issue P*.
(5) Fokker Drawing W41190, Sheet 016, Issue P*.
As of the effective date of this AD, no person may modify any airplane using Fokker Service Bulletin SBF100-28-021, dated September 6, 1991 (specified in European Aviation Safety Agency (EASA) AD 2011-0158, dated August 26, 2011, and is not incorporated by reference in this AD). That service bulletin was cancelled by Fokker Service Bulletin SBF100-28-021, Revision 1, dated June 30, 2011 (not incorporated by reference in this AD).
