Commonwealth legislation

AD/DHC-1/3 - Fuel Line Cock to Filter - Replacement

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

This Airworthiness Directive (AD) is a mandatory safety order made by the Civil Aviation Safety Authority (CASA) under Commonwealth aviation law.

What it requires Owners and operators must immediately replace the fuel line valve (the 'cock') that sits between the fuel line and the filter on affected aircraft.

Who it affects This applies specifically to English-built models of the De Havilland DHC-1 Chipmunk aeroplane.

How to comply You must carry out the replacement in accordance with either:

De Havilland Chipmunk Modification H.188; or
Air Navigation Order 105.1.14.15.5.3.

When to do it Immediately — the directive uses the term 'forthwith', which means without delay or as soon as practicable.

Why it matters Airworthiness Directives are legally binding. This one addresses a specific safety defect in the original fuel system component that could lead to fuel starvation, engine failure, or fire if not rectified.

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Current sections

Direct links to the current provisions in AD/DHC-1/3 - Fuel Line Cock to Filter - Replacement.

AD/DHC-1/3 - Fuel Line Cock to Filter - Replacement

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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 De Havilland DHC-1 (Chipmunk) Series Aeroplanes

AD/DHC-1/3 Fuel Line Cock to Filter - Replacement 6/55

Applicability: All English production models. Document: 1. DH Chipmunk Mod. H.188; or

ANO 105.1.14.15.5.3.

Compliance: Forthwith.

Source text

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