Commonwealth legislation

AD/PA-23/79 - Stabilator Assembly Lower Surface - Inspection

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Commonwealth

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legislative instrument

Plain English Summary

3/10 complexity

Owners/operators of certain Piper PA‑23‑250 (serials 27‑7654001 to 27‑7954044) with specified stabilator serial numbers must begin recurring inspections of the stabilator lower surface within 100 hours TIS after 31 Oct 1979 and repeat every ≤100 hours until the stabilator is replaced or modified per Piper Service Bulletin No. 606. CASA issued this AD because of possible rib‑to‑skin bonding defects; operators bear inspection and modification costs.

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AD/PA-23/79 - Stabilator Assembly Lower Surface - 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-23/79 Stabilator Assembly Lower Surface - Inspection 10/79

Applicability: All model PA-23-250 (six place) with S/Nos. 27-7654001 to 27-7954044, fitted with stabilator S/Nos. referenced in Piper SB No. 606.

Document: Piper SB No. 606.

Compliance: Within 100 hours time in service after 31 October 1979 and there- after at intervals not exceeding 100 hours time in service until stabilator assembly is replaced or modified in accordance with SB No. 606.

Background: The manufacturer has determined that the affected stabilator assemblies may not have proper bonding between the ribs and skins.

Source text

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