Commonwealth legislation

AD/TPE 331/7 - Fuel Control - Modification

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This Act has been repealed and is no longer in force. It is retained for historical reference.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 instruction (called an Airworthiness Directive or AD) issued under Australia’s Civil Aviation Regulations 1998.

What it requires: Owners and operators must immediately modify the fuel control systems on specific AlliedSignal (Garrett/AiResearch) TPE-331 turbine engines. The affected models are:

TPE-331-25A
TPE-331-25D
TPE-331-25F
TPE-331-43
TPE-331-47

How to comply: Follow the technical instructions in the manufacturer’s Service Bulletins (Nos. 25A, 25B, 25C, or 25D—whichever matches your engine), or alternatively comply with directive AD/AIR-T/4.

When: Forthwith (immediately—without waiting for the next scheduled maintenance).

Why it matters: This directive addresses specific safety risks in the fuel control systems of these engines. Flying without completing this modification breaches aviation law and risks mechanical failure.

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Current sections

Direct links to the current provisions in AD/TPE 331/7 - Fuel Control - Modification.

AD/TPE 331/7 - Fuel Control - Modification

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source AlliedSignal (Garrett/AiResearch) Turbine Engines - TPE 331 Series

AD/TPE 331/7 Fuel Control - Modification 3/86

Applicability: TPE-331-25A, -25D, -25F, -43 and -47 engines.

Document: AiResearch TPE-331 SB Nos. 25A, 25B, 25C and 25D as applicable; or AD/AIR-T/4.

Compliance: Forthwith.

Source text

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