Commonwealth legislation

AD/PA-46/21 - Empennage Skin Rivets

In ForceCTH

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Commonwealth

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legislative instrument

Plain English Summary

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This Airworthiness Directive orders owners/operators of specified Piper PA-46-310P and PA-46-350P aeroplanes (listed serial numbers) to replace certain empennage countersunk rivets with larger-diameter universal-head rivets following Piper Service Bulletin 944. The AD explains inspections found loose rivets that can work into the skin and potentially weaken structure; it requires compliance within 100 flight hours after 20 August 1992.

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AD/PA-46/21 - Empennage Skin Rivets

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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-46 (Malibu) Series Aeroplanes

AD/PA-46/21 Empennage Skin Rivets 9/92

Applicability: Model PA-46-310P with serial numbers 46-8408001 through 46-8608067, and 4608001 through 4608140, and Model PA-46-350P with serial numbers 4622001 through 4622109.

Requirement: Replace the empennage countersunk rivets indicated in Piper SB 944, with universal head rivets of a larger diameter in accordance with the INSTUCTIONS section of Piper SB 944.

Note: FAA AD 92-13-07 Amdt 39-8277 refers.

Compliance: Within 100 hours time in service after 20 August 1992.

Background: General maintenance inspections of the empennage of the affected aircraft have revealed loose rivets working into the skin. Undetected loose rivets could eventually lead to a weakened aircraft structure.

Source text

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