Commonwealth legislation

AD/DAUPHIN/14 - Main Rotor Gearbox Oil Drain Plug - Inspection and Rework

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

The directive requires inspection and rework of the main rotor gearbox oil drain area on Eurocopter SA 360/365 (Dauphin) helicopters whose gearbox is modified to A.M.S. 07-7149, carried out per Aerospatiale Service Bulletin 01-13.

Issued by CASA, compliance is mandatory within 25 flight hours after 30 Nov 1984 or before installing the gearbox, to prevent drain‑plug‑union damage and potential main gearbox oil loss.

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AD/DAUPHIN/14 - Main Rotor Gearbox Oil Drain Plug - Inspection and Rework

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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/14 Main Rotor Gearbox Oil Drain Plug - Inspection and Rework

11/84

Applicability: All models fitted with main rotor gear box modified to A.M.S. 07-7149 condition. Requirement: Aerospatiale S.B. 01-13.

Note: Bureau Veritas AD 83-186-18(B) refers. Compliance: Within 25 hours time in service after 30 November 1984 or prior to the main gear box initial installation in an aircraft.

Background: The manufacturer deems it necessary to rework the transmission deck flange, to prevent damage to the drain plug union, which may result in the loss of main gear box oil.

Source text

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