Commonwealth legislation

AD/DHC-8/91 - Emergency Exit Door Valve - Replacement

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This directive requires operators of Bombardier DHC‑8 aeroplanes (models 301, 311, 314, 315; serial numbers 100–593) to replace the emergency-exit pressure control valve P/N 75290151‑001 with P/N 505702, following Transport Canada AD CF‑2003‑04, within 30 months (effective 15 May 2003). It was issued by the Civil Aviation Safety Authority under subregulation 39.1(1) to address valve freezing that could prevent opening an emergency exit. Operators must procure and fit the part and schedule the work; CASA enforces compliance.

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Current sections

Direct links to the current provisions in AD/DHC-8/91 - Emergency Exit Door Valve - Replacement.

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 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.

Bombardier (Boeing Canada/De Havilland) DHC-8 Series Aeroplanes

AD/DHC-8/91 Emergency Exit Door Valve -

AD/DHC-8/91 Emergency Exit Door Valve - Replacement 5/2003

Applicability: Bombardier DHC-8 aeroplane models 301, 311, 314 and 315, serial numbers 100

through 593.

Requirement: Replace the existing pressure control valve part number (P/N) 75290151-001 with P/N 505702 valve per the requirements of Transport Canada AD CF-2003-04.

Compliance: Within 30 months after the effective date of this directive.

This Airworthiness Directive becomes effective on 15 May 2003.

Background: Freezing of the control valve, which could prevent opening of the emergency exit door is replaced by this directive.

View image in the official source

James Coyne

Delegate of the Civil Aviation Safety Authority 4 April 2003

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 23 April 2003.

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 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.

Bombardier (Boeing Canada/De Havilland) DHC-8 Series Aeroplanes

AD/DHC-8/91 Emergency Exit Door Valve - AD/DHC-8/91 Emergency Exit Door Valve - Replacement 5/2003

AD/DHC-8/91 Emergency Exit Door Valve - Replacement 5/2003

Applicability: Bombardier DHC-8 aeroplane models 301, 311, 314 and 315, serial numbers 100

through 593.

Requirement: Replace the existing pressure control valve part number (P/N) 75290151-001 with P/N 505702 valve per the requirements of Transport Canada AD CF-2003-04.

Compliance: Within 30 months after the effective date of this directive.

This Airworthiness Directive becomes effective on 15 May 2003.

Background: Freezing of the control valve, which could prevent opening of the emergency exit door is replaced by this directive.

James Coyne

Delegate of the Civil Aviation Safety Authority 4 April 2003

The above AD is notified in the Commonwealth of Australia Gazette on 23 April 2003.