Commonwealth legislation

AD/HU 269/50 Amdt 1 - Main Rotor Mast and Tailboom Supports - Inspection and 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This Act has been repealed and is no longer in force. It is retained for historical reference.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

3/10 complexity

What this is: An Airworthiness Directive (safety regulation) requiring specific safety work on Schweizer (Hughes) 269 Series helicopters.

Who it affects: Owners and operators of these helicopters that have flown 300 hours or more ("time in service" means flight hours).

What must be done:

Inspection and modification of the main rotor mast and tailboom supports (critical structural components).
The exact technical steps aren't written in this document; instead, you must follow the manufacturer's instructions in Hughes Service Information Notice No. N-124.1 (this is called "incorporation by reference").

When it must be done:

Part I: Within 100 flight hours after 27 February 1976 (unless already done).
Part II: By the time the aircraft reaches 300 flight hours after 27 February 1976.

Why it matters: This prevents structural failures in flight-critical components that could lead to catastrophic accidents.

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Direct links to the current provisions in AD/HU 269/50 Amdt 1 - Main Rotor Mast and Tailboom Supports - Inspection and Modification.

AD/HU 269/50 Amdt 1 - Main Rotor Mast and Tailboom Supports - 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 Schweizer (Hughes) 269 Series Helicopters

AD/HU 269/50

Amdt 1

Main Rotor Mast and Tailboom Supports - Inspection and Modification

2/76

Applicability: All models which have achieved 300 hours or more time in service. Document: Hughes SIN No. N-124.1.

Compliance: For Part I: Unless already accomplished, within 100 hours time in service after 27 February 1976.

For Part II: With 300 hours time in service after 27 February 1976.

Source text

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