Commonwealth legislation

AD/DHC-8/11 Amdt 1 - Engine Cowl Door Retention and Pressure Relief

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This Airworthiness Directive requires owners/operators of specified Bombardier Dash 8 Model 100 (s/n 1–156, 158–199) and Model 300 (s/n 124) to modify both engine cowlings per De Havilland Canada Service Bulletin No. 8-71-13, Revision C. The change prevents cowl doors from blowing off during engine fires—ensuring fire extinguishing systems work—and had to be completed by 30 Nov 1990. Amendment 1 updates the service-bulletin reference.

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Current sections

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AD/DHC-8/11 Amdt 1 - Engine Cowl Door Retention and Pressure Relief

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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

AD/DHC-8/11

Amdt 1

Engine Cowl Door Retention and Pressure Relief 4/90

Applicability: Model 100 series S/No. 1 to 156 and 158 to 199. Model 300 series S/No. 124.

Requirement: Modify both engine, engine cowlings in accordance with DHC S.B. No. 8-71-13 Rev C.

Note: Canadian AD CF-89-15 refers.

Compliance: Prior to 30 November 1990.

Background: There have been instances of loss of engine cowl doors during engine fires. That door loss has rendered the fire extinguishing system ineffective.

Amendment 1 reflects Rev C of the Requirement Document.

Source text

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