Commonwealth legislation

AD/HU 369/4 - Main Rotor Locknut and Retaining Ring - 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This Act has been repealed and is no longer in force. It is retained for historical reference.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

This CASA Airworthiness Directive mandates a mechanical modification to the main rotor locknut and retaining ring on specified Hughes 369 series helicopters (per Hughes Service Information Notice HN‑11). It applies to owners/operators of the affected models and requires completing the modification before further flight. The change corrects a potential failure that could allow main rotor separation, preventing catastrophic loss of aircraft and life.

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AD/HU 369/4 - Main Rotor Locknut and Retaining Ring - 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 McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters

AD/HU 369/4 Main Rotor Locknut and Retaining Ring - Modification

Applicability: All models specified in Hughes SIN No. HN-11. Document: Hughes SIN No. HN-11.

Compliance: In accordance with the requirement document.

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Source text

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