Commonwealth legislation

AD/DAUPHIN/2 - Tail Fin Ballast Weight - Installation

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

What it is: This is a safety directive (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority (CASA) under aviation safety law.

What it requires: Owners and operators of specific Eurocopter Dauphin helicopters (models SA 365C and 365C1 with skid-type landing gear) must install ballast weights on the tail fin.

Why: To reduce dangerous vibration levels in the rear section of the tail boom that could affect aircraft structural integrity and safety.

When: This modification must be completed before the aircraft is certified as airworthy (before certification).

Key details:

Applies to: SA 365C and 365C1 models fitted with skid landing gear only
Technical standard: Follow the instructions in Dauphin Service Bulletin No. 53.04
First issued: September 1979

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AD/DAUPHIN/2 - Tail Fin Ballast Weight - Installation

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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/2 Tail Fin Ballast Weight - Installation 9/79

Applicability: All models SA 365C and 365C1 fitted with skid type landing gear. Document: Dauphin SB No. 53.04.

Compliance: Before certification.

Background: Addition of ballast weight is required to reduce vibration levels in the tail boom rear section.

Source text

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