Commonwealth legislation

AD/SA-TP/23 Amdt 1 - Structural Components Fatigue Lives

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This Act has been repealed and is no longer in force. It is retained for historical reference.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 rule (called an Airworthiness Directive) for anyone who owns, operates, or maintains British Aerospace (Scottish Aviation) Twin Pioneer aircraft—a type of vintage twin-engine utility plane.

What it requires: Operators must follow a specific technical manual (Scottish Aviation TNS No. 33, Issue 2, Appendix N) that sets fatigue life limits for structural components. Fatigue life refers to how many flights or hours a metal part can safely endure before stress cracks become likely. Once a part reaches its limit, it must be replaced or overhauled to prevent structural failure.

Who must comply: All operators of any Twin Pioneer model.

Why it matters: Metal fatigue is a leading cause of catastrophic airframe failures. This rule prevents accidents by forcing operators to retire or inspect aging structural parts before they break.

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Direct links to the current provisions in AD/SA-TP/23 Amdt 1 - Structural Components Fatigue Lives.

AD/SA-TP/23 Amdt 1 - Structural Components Fatigue Lives

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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 British Aerospace (Scottish Aviation) Twin Pioneer Series Aeroplanes

AD/SA-TP/23

Amdt 1

Applicability: All models.

Structural Components Fatigue Lives NK

Document: Scottish Aviation TNS No. 33, Issue 2.

Compliance: As detailed in Appendix N of the requirement document.

Source text

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