Created Wednesday, Sep 20th 2023 20:09Z, last updated Wednesday, Sep 20th 2023 20:09Z
A Central Mountain Air de Havilland Dash 8-300, registration C-GUXZ performing flight
9M-8570 from Vancouver,BC to Smithers,BC (Canada) with 25 passengers and 3 crew, was enroute at FL240 when the crew received zero quantity indication for the hydraulic system #1, however, no other abnormal indications occurred. The crew worked the checklist to defer the #1 hydraulic system under the minimum equipment list, but subsequently received secondary indications including hydraulic pressure zero and master caution. The crew worked the checklist for #1 hydraulic system failure, declared emergency with ATC and diverted to Prince George,BC (Canada) for a safe landing.
The Canadian TSB reported:
While enroute, the number 1 hydraulic system of the aircraft indicated a hydraulic fluid quantity of 0. There were no other indications of hydraulic issues with the number 1 system; it seemed to function normally. The crew completed the actions required to defer the number 1 hydraulic system under the provisions of the aircraft minimum equipment list (MEL). At 0920 Pacific Daylight Time (PDT), the aircraft began to display intermittent secondary indications of a number 1 hydraulic system failure, including loss of hydraulic pressure and associated master caution lights. The crew actioned the items required by the aircraft quick reference handbook (QRH) for a number 1 hydraulic system failure and declared an emergency with air traffic control (ATC). At 0922 PDT, the crew initiated a diversion to Prince George Airport (CYXS), BC, where the aircraft landed without incident.
Maintenance determined that the aircraft had a leak in the number 1 hydraulic system.
Related Flight:
9M8570,
Central Mountain Air News
