Commonwealth legislation

AD/PA-30/31 - Aileron Nose Rib - Inspection and Modification

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Commonwealth

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legislative instrument

Plain English Summary

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This directive requires owners/operators of Piper PA‑30 (S/N 30‑1+) and PA‑39 (S/N 39‑1+) to perform recurring inspections of the aileron nose rib and to fit Piper Kit No. 763 893 as the permanent fix — inspections are on a 100‑hour cycle until the kit is installed.

It responds to reported cracking, affects aircraft owners, operators and maintainers, and places inspection, downtime and kit/installation costs on those parties (see Piper Service Letter No. 850 / FAA AD 79‑20‑10).

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AD/PA-30/31 - Aileron Nose Rib - Inspection and Modification

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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-30 & 39 (Twin Comanche) Series Aeroplanes

AD/PA-30/31 Aileron Nose Rib - Inspection and Modification 11/79

Applicability: All models: PA-30 with S/Nos. 30-1 and up, and PA-39 with S/Nos. 39-1 and up. Document: 1. Piper SL NO. 850; or

FAA AD 79-20-10, Amdt. 39-3579.

Compliance: Inspect within 100 hours time in service after 30 November 1979 and thereafter at intervals not exceeding 100 hours time in service until modified by fitting Piper Kit No. 763 893.

Background: The manufacturer has received reports of cracks developing in the aileron nose rib of several aeroplanes regardless of any previous modification kit fitted.

Source text

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