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