Commonwealth legislation

AD/GY80/7 - Propeller Governor Oil Inlet Union - Replacement

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This AD mandates replacement of the propeller governor oil‑inlet union on Aerospatiale GY80 (Horizon) aircraft fitted with variable‑pitch Hartzell propellers, using Aerospatiale Horizon Service Bulletin No. 37, to be completed within 100 hours TIS after 31 July 1979. It affects GY80 owners/operators, who must schedule and pay for the work; the measure aims to prevent oil loss from reported crankcase‑union failures.

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AD/GY80/7 - Propeller Governor Oil Inlet Union - Replacement

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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 Aerospatiale GY 80 (Horizon) Series Aeroplanes

AD/GY80/7 Propeller Governor Oil Inlet Union - Replacement 6/79

Applicability: All GY80 aircraft fitted with variable pitch Hartzell propeller. Document: Aerospatiale Horizon SB No. 37.

Compliance: Within 100 hours time in service after 31 July 1979.

Background: This Directive is issued as the result of overseas notification of oil loss caused by failure of the crankcase mounted union.

Source text

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