Commonwealth legislation

AD/ATF3/3 - H.P. Turbine Rotor Assembly P/No. 3001766-7

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

2/10 complexity

This airworthiness order mandates inspections of AlliedSignal (Garrett/AiResearch) ATF3-6-2C, ATF3-6-4C, ATF3-6A-3C and ATF3-6A-4C engines’ high‑pressure turbine rotor assemblies for curvic‑area cracks, carried out per Service Bulletin ATF3‑72‑6070. It applies to operators of engines with the listed rotor part/serial numbers; inspections must be done at the next removal or scheduled access (and in no event later than 31 August 1986) to prevent catastrophic engine failure.

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Current sections

Direct links to the current provisions in AD/ATF3/3 - H.P. Turbine Rotor Assembly P/No. 3001766-7.

AD/ATF3/3 - H.P. Turbine Rotor Assembly P/No. 3001766-7

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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AlliedSignal (Garrett/AiResearch) Turbine Engines - ATF3 Series

AD/ATF3/3 H.P. Turbine Rotor Assembly P/No. 3001766-7 8/86

Applicability: ATF3-6-2C, -6-4C, -6A-3C and -6A-4C engines with H.P. turbine rotor assemblies whose serial numbers are listed in the Requirement Document.

Requirement: Inspect H.P. turbine rotor assemblies in accordance with G.T.E.C. S.B. ATF3-72-6070.

Compliance: Unless already accomplished, at the next removal of H.P. turbine rotor assembly but not later than the next periodic inspection that provides access to the H.P. turbine rotor assembly after 31 August 1986.

Background: The manufacturer has identified H.P. turbine rotor assemblies by serial number which may be susceptible to cracking in the curvic area of the disc.

This Directive is issued to inspect those suspect rotor assemblies.

Source text

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

1 AD/ATF3/3 - H.P. Turbine Rotor Assembly P/No. 3001766-7