Commonwealth legislation

AD/BEECH 76/2 - Cowl Flap Hinge Assemblies

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

1/10 complexity

This Airworthiness Directive (AD) mandates urgent safety maintenance on specific Beechcraft 76 Duchess aeroplanes to prevent mechanical failure.

What it requires: Owners and operators must inspect and repair or replace the cowl flap hinge assemblies (the metal parts that allow engine cooling flaps to move) according to the manufacturer's Service Instruction No. 1044.

Who must comply: Only applies to Model 76 aircraft with serial numbers ME-1 through ME-6 and ME-8 through ME-79.

When: The work had to be completed within 100 hours of flight time after 30 June 1979, unless already done.

Why it matters: The original aluminium hinges were cracking and failing during normal use. If a hinge fails in flight, it could cause the cowl flap (which controls engine cooling) to detach or malfunction, potentially leading to engine damage or loss of control.

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Current sections

Direct links to the current provisions in AD/BEECH 76/2 - Cowl Flap Hinge Assemblies.

AD/BEECH 76/2 - Cowl Flap Hinge Assemblies

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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 Beechcraft 76 (Duchess) Series Aeroplanes

AD/BEECH 76/2 Cowl Flap Hinge Assemblies 6/79

Applicability: All model 76 with S/Nos. ME-1 to ME-6 and ME-8 to ME-79. Requirement: Action in accordance with Beechcraft SI No. 1044.

Compliance: Unless already accomplished, within 100 hours’ time in service after 30 June 1979. Background: The existing aluminium hinge is subject to cracking and failure in service.

Source text

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