Commonwealth legislation

AD/F100/31 - Flight Augmentation Computer Replacement

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Commonwealth

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legislative instrument

Plain English Summary

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Mandates replacement of specified Collins Flight Augmentation Computer (FAC) units with modified units P/N 622-7478-401 Mod.11 on Fokker F.28 Mk.0100 aeroplanes (serials 11244–11348) in line with Fokker service bulletins. Aircraft operators must complete the retrofit by 22 December 1999; the Civil Aviation Safety Authority enforces compliance. The stated technical purpose is improved fault isolation to address stabiliser trim and yaw-damper faults (Background).

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AD/F100/31 - Flight Augmentation Computer Replacement

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Fokker F100 (F28 Mk 100) Series Aeroplanes

AD/F100/31 Flight Augmentation Computer Replacement 4/99

Applicability: Model F.28 Mk.0100 aeroplanes serial numbers 11244 through 11348 inclusive.

Requirement: 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.

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.

Note: Netherlands AD 1991-057/4 refers.

Compliance: 1. Prior to 22 December 1999.

Prior to 22 December 1999.

This Airworthiness Directive becomes effective on 22 April 1999.

Background: 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.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

1 AD/F100/31 - Flight Augmentation Computer Replacement