Commonwealth legislation

AD/T5508D/1 - Inner Bevel Gear

In ForceCTH

Jurisdiction

Commonwealth

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legislative instrument

Plain English Summary

2/10 complexity

This directive requires replacing the engine accessory inner bevel gear P/N 2-070-005-02 with P/N 2-070-030-01 on Honeywell (Avco Lycoming) T5508D turboshaft engines, following Avco Lycoming Service Bulletin 5508-0013. CASA’s delegate issued the AD; engine operators/owners must install the new gear before an Australian Certificate of Airworthiness is issued and bear replacement cost. The stated aim is to prevent fatigue failure of the gear that could cause engine failure.

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Current sections

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AIRWORTHINESS DIRECTIVE

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For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

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Honeywell International Turbine Engines - T5508D Series

AD/T5508D/1 Inner Bevel Gear 7/2003

Applicability: Honeywell (Avco Lycoming) T5508D turboshaft engines fitted with engine accessory inner bevel gear Part Number (P/N) 2-070-005-02.

Requirement: Replace the engine accessory inner bevel gear Part Number P/N 2-070-005-02 with gear P/N 2-070-030-01 in accordance with Avco Lycoming service bulletin No.

5508-0013.

Note: FAA AD 78-07-04 refers.

Compliance: Prior to issue of an Australian certificate of airworthiness.

This Airworthiness Directive becomes effective on 10 July 2003.

Background: Replacement of the gear will prevent fatigue failure of the engine accessory inner bevel gear, which will lead to engine failure.

Signature of Jim Coyne Delegate of the Civil Aviation Safety Authority

Jim Coyne

Delegate of the Civil Aviation Safety Authority 26 May 2003

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Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

Honeywell International Turbine Engines - T5508D Series