Commonwealth legislation

AD/AC/50 - Unfeathering Pump Supply Line - Replacement

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

The directive mandates replacement of the unfeathering‑pump supply line on Twin Commander Model 690 aircraft (S/N 11001–11063), to be done per Aero Commander Service Bulletin No. 123A or FAA AD 73‑13‑9 within 100 hours’ time‑in‑service after 31 August 1973. It’s a mandatory, one‑time safety action affecting owners/operators, who bear costs and must schedule the work to maintain airworthiness.

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AD/AC/50 - Unfeathering Pump Supply Line - 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 Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes

AD/AC/50 Unfeathering Pump Supply Line - Replacement 8/73

Applicability: Model 690 with S/Nos. 11001 to 11063. Document: 1. Aero Commander SB No. 123A; or 2. FAA AD 73-13-9.

Compliance: Within 100 hours’ time in service after 31 August 1973.

Source text

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