Commonwealth legislation

AD/DHC-8/32 - Landing Gear Hydraulic Selector Valve

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Commonwealth

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legislative instrument

Plain English Summary

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This airworthiness directive requires operators of de Havilland DHC‑8‑100 aeroplanes (serials 003–038) that have not installed modification 8/0530 to carry out the work specified in de Havilland Alert Service Bulletin A8‑32‑117 within 300 flight hours of 30 June 1994 or by 30 October 1994, to fix a pilot‑valve leak risk that could permit inadvertent landing‑gear retraction. Costs and scheduling fall to the aircraft owners/operators; CASA enforces the directive.

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AD/DHC-8/32 - Landing Gear Hydraulic Selector Valve

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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-8/32 Landing Gear Hydraulic Selector Valve 7/94

Applicability: All DHC-8-100 series aircraft S/N 003 through 038 not incorporating modification 8/0530.

Requirement: Unless previously carried out action in accordance with de HAVILLAND Dash 8 Alert Service Bulletin A8-32-117.

Note: Transport Canada AD CF-94-05 refers.

Compliance: Within 300 hours time in service from 30 June 1994 or by 30 October 1994, whichever occurs first.

Background: The manufacturer has advised that pilot valve leakage which has not been corrected may, when combined with a low voltage condition, lead to an inadvertent landing gear retraction.

Source text

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