Commonwealth legislation

AD/ALF/3 - Compressor Housing Support Assembly 2-103-070-07 - Inspection and Replacement

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This airworthiness directive requires immediate and recurring inspections of compressor housing support assembly 2-103-070-07 on specified Lycoming ALF502L-2 engines and mandates replacement of affected assemblies within 800 hours or 600 cycles. (Applicability; Compliance.)

It affects owners/operators of the listed serial-numbered engines, who must inspect on receipt and every 100 engine hours until replacement and bear inspection and replacement costs while tracking hours/cycles. (Background; Compliance.)

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Current sections

Direct links to the current provisions in AD/ALF/3 - Compressor Housing Support Assembly 2-103-070-07 - Inspection and Replacement.

AD/ALF/3 - Compressor Housing Support Assembly 2-103-070-07 - Inspection and Replacement

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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AlliedSignal (Lycoming) Turbine Engines - ALF502 and LF507 Series

AD/ALF/3 Compressor Housing Support Assembly 2-103-070-07 - Inspection and Replacement

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Applicability: Lycoming model ALF 502L-2 turbofan engine S/Nos. LF03020, LF03021, LF03038, LF03039.

Document: 1. Lycoming SB No. ALF 502-72-0014; or

AD/LYC-T/20.

Compliance: 1. Immediately upon receipt of this Directive and after each 100 hours of engine operation thereafter until affected support assemblies are replaced.

Affected compressor housing support assemblies must be replaced not later than 800 hours or 600 cycles time in service whichever occurs first.

Background: This Directive is issued as the result of notification from the engine manufacturer that the affected engines were installed with the rear engine mount improperly assembled. With this condition, normal flight loads may have imposed excessive stress on the compressor housing support assembly engine mounting lugs. Affected mounting lugs must be periodically inspected for possible cracks until compressor housing support assembly is replaced.

Source text

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

1 AD/ALF/3 - Compressor Housing Support Assembly 2-103-070-07 - Inspection and Replacement