Commonwealth legislation

AD/F50/55 - Autoflight - Autopilot Computer - Replacement

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

The directive mandates replacing or modifying the autopilot computer on Fokker F50 (F27 Mk 50) aircraft listed in the Requirement Document to prevent unintended autopilot re‑engagement caused by a sticky Flight Mode Panel engage button. Operators/owners of affected aircraft must have the work done per Fokker Service Bulletin F50‑22‑005 on the bulletin’s schedule, bearing parts, labour and downtime costs to retain airworthiness and eliminate the safety risk.

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AD/F50/55 - Autoflight - Autopilot Computer - Replacement

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Fokker F50 (F27 Mk 50) Series Aeroplanes

AD/F50/55 Autoflight - Autopilot Computer - Replacement 6/92

Applicability: All aircraft specified in the Requirement Document.

Requirement: In accordance with the Requirement Document Fokker Service Bulletin F50-22-005. Compliance: As specified in the Requirement Document

Background: The autopilot engage button on the Flight Mode Panel apparently exhibits a tendency to stick in the engage’ position. As a result the autopilot re-engages when either an autopilpot disconnect button on the control wheel or a go-around’ button on the power levers is released. A modification to the autopilot computer is required.

Source text

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