Commonwealth legislation

AD/B747/229 - Engine Thrust Control Cables

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

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This AD requires operators of specified Boeing 747-100/200/300/SR/SP series fitted with P&W JT9D, GE CF6‑45/50 or Rolls‑Royce RB211‑524 engines to carry out the inspections and corrective actions set out in FAA AD 2000‑05‑30. It affects aircraft operators and maintenance organisations because a failure of an engine thrust “B” cable during landing can stow a reverser and cause that engine to accelerate, producing severe asymmetric thrust; compliance follows the FAA AD timing (Requirement; Compliance; Applicability).

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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/B747/229 Engine Thrust Control Cables

AD/B747/229 Engine Thrust Control Cables 7/2000

Applicability: Model 747-100, -100B, -100B SUD, -200B, -200C, -200F, -300, SR and SP series aircraft fitted with P&W JT9D-3 or -7 series engines, CF6-45 or -50 series engines or RB211-524B, C or D series engines.

Requirement: Action in accordance with the technical requirements specified in FAA AD 2000-05- 30 Amendment 39-11640.

Note: FAA AD 2000-05-30 Amendment 39-11640 refers.

Compliance: At the time specified in the FAA AD except for a revised effective date of 13 July 2000.

This Airworthiness Directive becomes effective on 13 July 2000.

Background: The FAA have identified an unsafe condition that relates to the effect of a thrust control cable failure on controllability of the aircraft. Should an engine control thrust “B” cable fail during landing, it changes the position of the thrust reverser directional control valve, causing the thrust reverser to stow and the engine to accelerate while the other engines remain in full reverse. This will result in a severe asymmetric condition during landing.

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

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 2 June 2000

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 14 June 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/B747/229 Engine Thrust Control Cables AD/B747/229 Engine Thrust Control Cables 7/2000

AD/B747/229 Engine Thrust Control Cables 7/2000

Requirement: Action in accordance with the technical requirements specified in FAA AD 2000-05- 30 Amendment 39-11640.

Note: FAA AD 2000-05-30 Amendment 39-11640 refers.

Compliance: At the time specified in the FAA AD except for a revised effective date of 13 July 2000.

This Airworthiness Directive becomes effective on 13 July 2000.

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 2 June 2000

The above AD is notified in the Commonwealth of Australia Gazette on 14 June 2000.