Commonwealth legislation

AD/LA-4/7 - Hull Frame Station 97 - Inspection and Modification

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

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Commonwealth

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legislative instrument

Plain English Summary

2/10 complexity

What this is: An Airworthiness Directive — a mandatory safety notice requiring owners of specific light aircraft to inspect and repair a structural component.

Who it affects: Owners and operators of Consolidated Aeronautics LA-4 and Colonial series aeroplanes with serial numbers before 546.

What you must do: Inspect and modify a specific part of the aircraft's frame called "Hull Frame Station 97" (a structural support in the fuselage) following the technical instructions in Consolidated Aeronautics Service Letter L44.

When: The work had to be completed within 100 hours of flight time after 31 May 1973. For any of these aircraft still registered today, this modification should already have been performed.

Why it matters: This addresses a structural weakness in the aircraft's hull frame that could affect airworthiness and safety if left unmodified.

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AD/LA-4/7 - Hull Frame Station 97 - Inspection and Modification

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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 Consolidated Aeronautics, Colonial and LA-4 Series Aeroplanes

AD/LA-4/7 Hull Frame Station 97 - Inspection and Modification

Applicability: All models with S/Nos. prior to 546. Document: Consolidated Aeronautics SL L44.

Compliance: Within 100 hours time in service after 31 May 1973.

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Source text

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