COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Fokker F100 (F28 Mk 100) Series Aeroplanes
AD/F100/31 Flight Augmentation Computer Replacement 4/99
Model F.28 Mk.0100 aeroplanes serial numbers 11244 through 11348 inclusive.
1. Unless previously accomplished replace all Collins Flight Augmentation Computer (FAC) units, part number (P/N) 622-7478-321, with modified units P/N 622-7478- 401 Mod.11 in accordance with Fokker Service Bulletin (SB) F100-22-026 dated 1 July 1991.
2. Replace all Collins FAC units, P/N 622-7478-401, with modified units P/N 622-7478-401 Mod.11 in accordance with Fokker SB F100-22-032 dated
2 September 1991.
Netherlands AD 1991-057/4 refers.
1. Prior to 22 December 1999.
2. Prior to 22 December 1999.
This Airworthiness Directive becomes effective on 22 April 1999.
The modified computers provide improved fault isolation to allow cross comparison of more signals than previously possible. Problems with stabiliser trim systems during ground testing and nuisance yaw-damper faults during take off have been solved by the incorporation of an additional modification.