Commonwealth legislation

AD/HU 369/20 - Adjustable Upper Engine Mount Assemblies - Inspection

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

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Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This airworthiness directive mandates safety inspections of adjustable upper engine mount assemblies on McDonnell Douglas (Hughes) and Kawasaki 369 series helicopters.

Who it affects: Owners and operators of these specific helicopter models, except those already covered by exemptions in Service Information Notice (SIN) HN-95.

What it requires: You must inspect the upper engine mount assemblies according to the procedures in Hughes SIN No. HN-95.

When: The inspection must be completed within 300 hours of flight time after 30 August 1976, or at the next engine change—whichever happens first.

Why it matters: This prevents potential engine mount failures that could cause the engine to separate from the aircraft structure, creating a serious flight safety hazard.

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AD/HU 369/20 - Adjustable Upper Engine Mount Assemblies - Inspection

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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 McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters

AD/HU 369/20 Adjustable Upper Engine Mount Assemblies - Inspection

Applicability: All models except those exempted by SIN No. HN-95. Document: Hughes SIN No. HN-95.

Compliance: Within 300 hours time in service after 30 August 1976 or next engine change whichever occurs first.

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Source text

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