Commonwealth legislation

AD/DHC-8/93 - APU Fuel Line Chafing

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This Directive requires operators of Bombardier (DHC-8) Series 100/200/300 aeroplanes (serials 003–585) with a specified APU installation to inspect a particular APU fuel tube (P/N 82830105-139) and fix any chafing found, following Bombardier Service Bulletin 8-49-19 (or Revision A). The action must be completed within six months. It matters because chafing can cause a fuel leak; the operator bears the cost and must schedule maintenance to comply with the inspection and corrective instructions.

JSON API

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/DHC-8/93 - APU Fuel Line Chafing.

AIRWORTHINESS DIRECTIVE

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.

View image in the official source

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

AD/DHC-8/93 APU Fuel Line Chafing 11/200

AD/DHC-8/93 APU Fuel Line Chafing 11/2003

Applicability: DHC-8 Series 100, 200 and 300 aeroplanes, serial numbers 003 to 585 inclusive, with Auxiliary Power Unit (APU) installation per Standard Option Only (S.O.O.) 8155 or Change Request (CR) 849SO08155.

Requirement: Carry out the inspection and rectification (if required) of the APU fuel tube assembly, Part Number (P/N) 82830105-139, in accordance with Bombardier Service Bulletin (SB) 8-49-19, dated 13 May 2003, or SB 8-49-19, Revision A, dated 7 July 2003.

Note: Transport Canada AD CF-2003-22 refers.

Compliance: With six months from the effective date of this Directive.

This Airworthiness Directive becomes effective on 30 October 2003.

Background: Investigation of a fuel leak incident revealed chafing of the APU fuel tube assembly on the bleed air duct shroud located in the centre wing area. The APU fuel tube assembly is attached to a fairlead by two clamps. In some instances, incorrect installation of the clamps on the fairleads may result in insufficient clearance, and cause contact between the fuel line and the bleed air duct, or gust lock cable, resulting in chafing of the APU fuel tube. The intent of this Directive is to provide inspection instructions and corrective actions to ensure the integrity of the APU fuel tube.

View image in the official source

Jim Coyne

Delegate of the Civil Aviation Safety Authority 18 September 2003

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 8 October 2003.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

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

AD/DHC-8/93 APU Fuel Line Chafing 11/200 AD/DHC-8/93 APU Fuel Line Chafing 11/2003

AD/DHC-8/93 APU Fuel Line Chafing 11/2003

Note: Transport Canada AD CF-2003-22 refers.

Compliance: With six months from the effective date of this Directive.

This Airworthiness Directive becomes effective on 30 October 2003.

Jim Coyne

Delegate of the Civil Aviation Safety Authority 18 September 2003

The above AD is notified in the Commonwealth of Australia Gazette on 8 October 2003.