Commonwealth legislation

AD/HU 269/33 - Main Rotor Mast - Inspection for Internal Corrosion

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This Act has been repealed and is no longer in force. It is retained for historical reference.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 a safety inspection for Schweizer (Hughes) 269 series helicopters.

Who is affected: Owners and operators of all models in the Schweizer (Hughes) 269 helicopter series.

What you must do: Inspect the main rotor mast (the central shaft that connects the rotor blades to the helicopter) for internal corrosion. You must follow the specific inspection procedures detailed in Hughes Service Information Notice (SIN) No. N-74.

When: Complete this inspection within 300 hours of flight time after 29 May 1970.

Why it matters: Internal corrosion can weaken the rotor mast without visible external signs. Since the mast holds the rotor blades, any failure could cause the helicopter to crash. This is a mandatory safety requirement issued under the Civil Aviation Regulations.

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AD/HU 269/33 - Main Rotor Mast - Inspection for Internal Corrosion

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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 269/33 Main Rotor Mast - Inspection for Internal Corrosion

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Applicability: All models. Document: Hughes SIN No. N-74.

Compliance: Within 300 hours time in service after 29 May 1970.

Source text

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