Airworthiness Directive · Amendment 39-17751 · Fuselage
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, as identified in Fokker Service Bulletin SBF100-53-120, dated May 15, 2012.
We are adopting a new airworthiness directive (AD) for certain Fokker Services B.V. Model F.28 Mark 0070 and 0100 airplanes. This AD was prompted by three reports of cracking in the rear pressure bulkhead (RPBH) web. This AD requires inspecting the RPBH web for cracking, and repairing if necessary. We are issuing this AD to detect and correct cracking of the RPBH web, which could result in in-flight decompression of the airplane and possible injury to the 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.
Before the accumulation of 30,000 total flight cycles, or within 12 months after the effective date of this AD, whichever occurs later: Do the actions specified in paragraph (g)(1) or (g)(2) of this AD.
(1) Do a detailed inspection for cracking of the rear side of the RPBH web below beam XI between buttock line (BL) 425L and BL 425R, in accordance with PART 1 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-53-120, dated May 15, 2012.
(2) Do a high frequency eddy current (HFEC) inspection for cracking of the forward side of the RPBH web below beam XI between BL 425L and BL 425R, in accordance with PART 2 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-53-120, dated May 15, 2012.
Note 1 to paragraph (g) of this AD: Fokker Services All Operators Message AOF100.176, dated May 15, 2012; and AOF100.178, dated September 10, 2012; provide additional information concerning the subject addressed by this AD.
(1) If any cracking is found during the inspections specified in paragraph (g)(1) or (g)(2) of this AD: Before further flight, repair the cracking, in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF100-53-121, dated May 15, 2012.
(2) For any airplane inspected as specified in paragraph (g)(1) of this AD and no cracking was found: Within 12 months after that inspection, do the HFEC inspection specified in PART 2 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-53-120, dated May 15, 2012. If any cracking is found: Before further flight, repair the cracking, in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF100-53-121, dated May 15, 2012.
