Commonwealth legislation

AD/M601/1 - Fuel Control Unit

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Commonwealth

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legislative instrument

Plain English Summary

2/10 complexity

Mandates replacement of the fuel control unit (FCU) relief valve on specified Walter M601-series engines, carried out in accordance with the referenced Mandatory Bulletin. The stated cause is reports of fuel leaks from failed relief-valve seals.

Owners/operators and those fitting spare units must replace affected valves by the AD’s deadlines: single-engine aircraft before next flight, multi-engine by 31 October 2001, and spares before installation. The AD was issued by the CASA delegate under CAR 1998 subregulation 39.1(1).

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Current sections

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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/M601/1 Fuel Control Unit 10/2001 DM

View image in the official sourceAD/M601/1 Fuel Control Unit 10/2001 DM

Applicability: M601 series engines detailed in Walter Mandatory Bulletin Number: A M6O1D/29a, A M601D-1/3a, A M601D-11NZ/3a, A M601E/23a, A M601E-11/4a, A M601E- 21/2a, A M601F/3a, A M601T/7a, A M601Z/15a.

Requirement: Replace the fuel control unit relief valve in accordance with the accomplishment instructions detailed in the Mandatory Bulletin Number: A M6O1D/29a, A M601D- 1/3a, A M601D-11NZ/3a, A M601E/23a, A M601E-11/4a, A M601E-21/2a, A M601F/3a, A M601T/7a, A M601Z/15a.

Note: Czech Republic Airworthiness Directive T-095/2000 refers.

Compliance: 1. Single engine aircraft; prior to further flight, effective 22 August 2001.

2. Multi engine aircraft; no later than 31 October 2001.

3. Spare fuel control units; prior to installation in an aircraft.

This Airworthiness Directive becomes effective on 22 August 2001.

Background: This Directive has been issued to require the replacement of the FCU relief valve. The requirement is in response to reports of fuel leaks from the FCU servomotor relief valve. The fuel leaks result from failure of the relief valve seals.

Signature of Eugene Paul Holzapfel Delegate of the Civil Aviation Safety Authority

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 13 August 2001

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 22 August 2001.

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.