Commonwealth legislation

AD/PT6A/18 - No. 2 Bearing Oil Pressure Tube

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Commonwealth

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legislative instrument

Plain English Summary

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This Airworthiness Directive mandates specific maintenance on the No.2 bearing oil‑pressure tube for certain Pratt & Whitney Canada PT6A‑38, PT6A‑41 and PT6A‑45A engines (serial numbers as listed in the referenced documents). Operators must follow Pratt & Whitney SB No.3099 Rev.2 or AD/UAC‑T/28A and complete the work within 100 hours TIS after 28 Feb 1978. The reissue updates the engine serial‑number list and clarifies assembly instructions; affected owners/operators bear compliance costs.

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AD/PT6A/18 - No. 2 Bearing Oil Pressure Tube

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Pratt and Whitney Canada Turbine Engines - PT6A Series

AD/PT6A/18 No. 2 Bearing Oil Pressure Tube 10/85

Applicability: PT6A-38, PT6A-41, PT6A-45A engines with S/Nos. as specified in the requirement document.

Document: 1. Pratt & Whitney of Canada SB No. 3099, Rev. 2; or

AD/UAC-T/28A.

Compliance: Within 100 hours time in service after 28 February, 1978.

Background: This Directive is reissued in order to reflect the manufacturers latest reference document which completes the listing of engine serial numbers affected and clarifies new part assembly instructions.

Source text

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