Commonwealth legislation

AD/DAUPHIN/1 - Tail Rotor and Tail Gearbox Support - Inspection

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This Act has been repealed and is no longer in force. It is retained for historical reference.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 (AD) — a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) that has the force of law.

What it requires: Owners and operators must inspect the tail rotor and tail gearbox support assembly on specific helicopters for dangerous cracks.

Which aircraft: All Eurocopter (now Airbus) Dauphin models: SA 360C, SA 361, SA 365C, and SA 365C1.

Why it matters: Cracks have been discovered where three arms connect to the support ring on overseas-registered helicopters. If this part fails, the tail rotor could separate from the aircraft, causing catastrophic loss of control.

How to comply: Follow the inspection procedures detailed in the manufacturer's Service Bulletin No. 05.02 (referenced in the document).

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AD/DAUPHIN/1 - Tail Rotor and Tail Gearbox Support - 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 Eurocopter SA 360 and SA 365 (Dauphin) Series Helicopters

AD/DAUPHIN/1 Tail Rotor and Tail Gearbox Support - Inspection

Applicability: All SA 360C, SA 361, SA 365C and SA365C1 helicopters. Document: Dauphin SB No. 05.02.

Compliance: As per requirement document.

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Background: Several cases of cracking have been observed at the junction of the three arms on the ring of the support assembly on overseas registered helicopters.

Source text

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