Commonwealth legislation

AD/HS 748/28 - Accessory Gearbox Drive Shaft

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Commonwealth

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legislative instrument

Plain English Summary

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This Airworthiness Directive requires operators of all HS 748 series aircraft to grease and inspect accessory gearbox drive shafts in accordance with Dowty Aerospace Wolverhampton Service Bulletin 83‑518 (6 October 1999). The work must be done within 50 hours time in service of the Directive and repeated every 50 hours thereafter. CASA states the action addresses shaft failures from inadequate lubrication that caused combustion‑chamber damage. The directive makes operators responsible for carrying out and funding the specified maintenance and following the external service bulletin's instructions.

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AIRWORTHINESS DIRECTIVE

View image in the official source

View image in the official source
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 CAR 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.

AD/HS 748/28 Accessory Gearbox Drive Sha

AD/HS 748/28 Accessory Gearbox Drive Shaft 8/2000

Applicability: All HS 748 series aircraft.

Requirement: Grease and inspect accessory gearbox drive shafts in accordance with Dowty Aerospace Wolverhampton Service Bulletin 83-518 dated 6 October 1999.

Note: CAA (UK) AD 002-09-99 refers.

Compliance: Within 50 hours time in service (TIS) from the effective date of this Directive and, thereafter, at intervals of 50 hours TIS.

This Airworthiness Directive becomes effective on 10 August 2000.

Background: This Directive is prompted by reports of accessory gearbox drive shaft failures that resulted in combustion chamber damage and subsequent flame break out. These failures have been attributed to inadequate lubrication.

View image in the official source

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 23 June 2000

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 12 July 2000.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

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 CAR 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.

AD/HS 748/28 Accessory Gearbox Drive Sha AD/HS 748/28 Accessory Gearbox Drive Shaft 8/2000

AD/HS 748/28 Accessory Gearbox Drive Shaft 8/2000

Applicability: All HS 748 series aircraft.

Requirement: Grease and inspect accessory gearbox drive shafts in accordance with Dowty Aerospace Wolverhampton Service Bulletin 83-518 dated 6 October 1999.

Note: CAA (UK) AD 002-09-99 refers.

Compliance: Within 50 hours time in service (TIS) from the effective date of this Directive and, thereafter, at intervals of 50 hours TIS.

This Airworthiness Directive becomes effective on 10 August 2000.

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 23 June 2000

The above AD is notified in the Commonwealth of Australia Gazette on 12 July 2000.