Commonwealth legislation

AD/DHC-8/3 - Propeller Autofeather System

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This CASA directive requires owners/operators of De Havilland DHC‑8‑100 aeroplanes (serials 1–113) to carry out the work specified in Boeing Canada de Havilland Service Bulletin SB 8‑61‑12 Revision A on the propeller autofeather system. Issued after reports of inadvertent unfeathering that could cause loss of altitude, compliance (at operators’ cost) was mandatory by 23 March 1989 and is enforceable by CASA.

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AD/DHC-8/3 - Propeller Autofeather System

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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-8/3 Propeller Autofeather System 2/89

Applicability: All DHC-8-100 series aeroplanes serial numbers 1 through 113 inclusive. Requirement: Action in accordance with Boeing Canada de Havilland Division SB 8-61-12

Revision A.

Note: Transport Canada AD CF-88-12R2 and FAA AD 88-12-51 R1 refer.

Compliance: Prior to 23 March 1989.

Background: Transport Canada have advised that recent incidents have occurred where the propeller has inadvertently unfeathered following activation of the autofeather system. This could result in loss of altitude in critical flight regimes.

Source text

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