Commonwealth legislation

AD/PA-23/71 - Emergency Gear Extension System - Inspection

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

What this is: A mandatory safety order (Airworthiness Directive) issued by the aviation regulator requiring specific aircraft owners to conduct a safety inspection.

Who it affects: Owners and operators of Piper PA-23-250 and PA-E23-250 model aeroplanes (Apache and Aztec series) with serial numbers from 27-2659 to 27-7754039.

What you must do: Inspect the emergency gear extension system — the backup mechanism that manually lowers the landing wheels if the main hydraulic or electrical system fails. The inspection must follow the technical procedures outlined in Piper Service Bulletin No. 564.

When: Complete the inspection within 100 hours of flight time (counting only hours the aircraft is actually flying, not sitting on the ground) after 31 July 1977.

Why this matters: A faulty emergency gear system could trap a pilot with wheels-up when the primary landing gear fails, almost certainly resulting in a dangerous belly-landing or crash.

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Direct links to the current provisions in AD/PA-23/71 - Emergency Gear Extension System - Inspection.

AD/PA-23/71 - Emergency Gear Extension System - Inspection

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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 Piper PA-23 (Apache and Aztec) Series Aeroplanes

AD/PA-23/71 Emergency Gear Extension System - Inspection 7/77

Applicability: Models PA23-250 and PA-E23-250 with S/Nos. 27-2659 to 27-7754039. Document: Piper SB No. 564.

Compliance: Within 100 hours time in service after 31 July 1977.

Source text

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