Commonwealth legislation

AD/DHC-8/44 - Refuel/Defuel Tube Assembly

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Commonwealth

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legislative instrument

Plain English Summary

4/10 complexity

This airworthiness directive requires operators of certain Bombardier/De Havilland DHC‑8 aeroplanes to inspect refuel/defuel tube assemblies and to replace or modify any leaking units to a prescribed design. It sets initial and recurring inspection intervals and phased deadlines for modification. Operators of the listed serial‑numbered models must fund and carry out the work according to the manufacturer's Requirement Document; the stated aim is to eliminate a reported fuel‑leak near an exhaust that creates a fire risk.

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AD/DHC-8/44 - Refuel/Defuel Tube Assembly

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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

AD/DHC-8/44 Refuel/Defuel Tube Assembly 12/96

Applicability: All DHC-8 model 102, 103, 106, 201 and 202 aircraft with serial number 203 through

450 and model 311, 314 and 315 with serial number 202 through 451 fitted with P/N refuel/defuel tube assemblies as specified in the Requirement Document.

Requirement: 1. Inspect the five applicable refuel/defuel tube assemblies in accordance with Section III, Part 1 of the Requirement Document.

Replace any leaking tube assemblies before further flight with fuel tubes modified per Requirements 2 or 3 (as applicable).

2. Modify refuel/defuel assembly P/N 82820107-007 or 82821015-003, as applicable, in accordance with de Havilland modification 8/2589 as detailed in Section III, Part 2 of the Requirement Document.

3. Modify all remaining refuel/defuel tube assemblies in accordance with de Havilland modification 8/2589 as detailed in Section III, Part 3 of the Requirement Document.

Note: Transport Canada AD CF-96-14 dated 20 August 1996 refers.

Compliance: 1. Unless previously accomplished, initially within 30 days from 2 October 1996, and thereafter reinspect at intervals not exceeding 6 months from the last inspection.

2. No later than 2 October 1997.

3. No later than 2 October 1998.

Compliance with Requirements 2 and 3 are terminating action for Requirement 1.

Background: The manufacturer advised that an operator has reported a fuel leakage from the refuel/defuel line shroud drain that is located near the refuel/defuel adapter in the R/H nacelle. Fuel leakage can collect beneath the exhaust fingernail on the heat shield structure and because of the heat generated in the area, is a potential fire hazard.

Source text

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

1 AD/DHC-8/44 - Refuel/Defuel Tube Assembly