1AD/TFE 731/10 - No. 1 Bearing - Replacement

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 - TFE731 Series

AD/TFE731/10 No. 1 Bearing - Replacement 3/86 TX

Applicability: TFE 731-2, -3, -5 Series with Serial Nos. as listed in the Requirement Document. Requirement: Replace suspect defective Number 1 bearings of affected engines. G.T.E.C. Alert S.B.

TFE 731-A72-3296 refers; or

AD/AIR-T/51.

Compliance: Unless already accomplished, within 25 hours time in service after 23 November 1984.

Background: This Directive is issued to remove from service defective No. 1 bearings. Following a reported failure, it has been established that defective bearings have been fitted to some engines. These engines have been identified in SB TFE 731-A72-3296.

Defective bearings have insufficient roller end clearance which results in skidding and subsequent failure.