Central Mountain DH8C near Prince George on Aug 9th 2023, hydraulic leak

Last Update: September 20, 2023 / 20:09:54 GMT/Zulu time

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Incident Facts

Date of incident
Aug 9, 2023

Classification
Incident

Flight number
9M-8570

Destination
Smithers, Canada

Aircraft Registration
C-GUXZ

ICAO Type Designator
DH8C

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.
Aircraft Registration Data
Registration mark
C-GUXZ
Country of Registration
Canada
Date of Registration
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Certification Basis
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TCDS Ident. No.
Manufacturer
Dehavilland
Aircraft Model / Type
DHC-8-311
ICAO Aircraft Type
DH8C
Year of Manufacture
Serial Number
Aircraft Address / Mode S Code (HEX)
Maximum Take off Mass (MTOM) [kg]
Engine Count
Engine Type
Main Owner
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Aircraft registration data reproduced and distributed with the permission of the Government of Canada.

Incident Facts

Date of incident
Aug 9, 2023

Classification
Incident

Flight number
9M-8570

Destination
Smithers, Canada

Aircraft Registration
C-GUXZ

ICAO Type Designator
DH8C

This article is published under license from Avherald.com. © of text by Avherald.com.
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