Commonwealth legislation

AD/DHC-8/74 - Oxygen - Deletion of Selector Stop on Flow Control Valve

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Requires removal of the selector stop on the passenger oxygen flow-control valve by incorporating Bombardier Modification 8/2989, in accordance with Bombardier Service Bulletin 8-35-19. It applies to DHC-8 Models 102–315, serial numbers 003–468 and 472 with specified all-passenger oxygen configurations. The Directive responds to reports that an incorrectly installed selector stop can prevent selection of ON or AUTO, which would stop passenger oxygen supply in an emergency; operators must complete the modification within 90 days time in service after the effective date.

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Current sections

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AD/DHC-8/74 - Oxygen - Deletion of Selector Stop on Flow Control Valve

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source
View image in the official source
Bombardier (Boeing Canada/De Havilland) DHC-8 Series Aeroplanes

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/DHC-8/74 Oxygen - Deletion of Selector Stop

on Flow Control Valve

11/2000

Applicability: DHC-8 aircraft Models 102, 103, 106, 201, 202, 301, 311, 314, and 315, serial numbers 003 to 468 inclusive and 472 with all-passenger oxygen configurations CR 835CH00009, CR 835CH00011, CR 835CH02001, CSI 82279 or CSI 82093

installed.

Requirement: Incorporate Bombardier Modification 8/2989 (Deletion of Selector Stop on Flow Control Valve) in accordance with Bombardier Service Bulletin 8-35-19 dated 17 August 2000.

Note: Transport Canada AD CF-2000-26 refers.

Compliance: Unless previously accomplished, within 90 days time in service after the effective date of this Directive.

This Airworthiness Directive becomes effective on 2 November 2000.

Background: This Directive addresses aircraft fitted with an Automatic Passenger Presentation of Oxygen System (APPOS). Field reports have indicated that the selector stop on the flow valve control panel can be installed incorrectly, preventing the selection of either “ON” or “AUTO”. In such a case, oxygen would be prevented from being available to passengers in case of an emergency.

View image in the official source

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 25 September 2000

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 4 October 2000.

Source text

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

1 AD/DHC-8/74 - Oxygen - Deletion of Selector Stop on Flow Control Valve

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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

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/DHC-8/74 Oxygen - Deletion of Selector Stop

on Flow Control Valve

11/2000

installed.

Requirement: Incorporate Bombardier Modification 8/2989 (Deletion of Selector Stop on Flow Control Valve) in accordance with Bombardier Service Bulletin 8-35-19 dated 17 August 2000.

Note: Transport Canada AD CF-2000-26 refers.

Compliance: Unless previously accomplished, within 90 days time in service after the effective date of this Directive.

This Airworthiness Directive becomes effective on 2 November 2000.

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 25 September 2000

The above AD is notified in the Commonwealth of Australia Gazette on 4 October 2000.