Commonwealth legislation

AD/PA-23/82 - Flap Spar Hinge Attachment Areas - Inspection

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Commonwealth

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legislative instrument

Plain English Summary

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This AD requires owners/operators of specified Piper PA‑23 (Apache/Aztec) aeroplanes (serials before 27‑7405301) to inspect the flap spar hinge attachment areas for cracking: an initial check within 100 hours TIS after the aeroplane reaches 2,000 hours TIS, then every 100 hours thereafter until the aircraft is modified per Piper Service Letter No. 853.

It matters because reported cracks could compromise safety; operators must schedule recurring inspections, bear costs for inspections/repairs, and carry out the SL‑853 modification to end the recurring inspections.

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AD/PA-23/82 - Flap Spar Hinge Attachment Areas - 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-23/82 Flap Spar Hinge Attachment Areas - Inspection 4/81

Applicability: All models PA-23/PA23-160, PA23-235, PA-23-250 and PA-23-250 (6 place) with S/Nos. prior to 27-7405301.

Document: Piper SL No. 853.

Note: FAA AD 81-04-05 amendment 39-4040 also refers.

Compliance: Unless already accomplished, initially inspect within 100 hours time in service after achieving 2000 hours time in service since manufacture and thereafter at intervals not exceeding 100 hours time in service until modified in accordance with Piper SL 853.

Background: Reports have been received by the manufacturer of cracks forming in the flap spar and radiating from the hinge attachment areas.

Source text

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