Incident de Havilland Canada DHC-8-103 C-GWRI, Friday 27 August 2021
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Date:Friday 27 August 2021
Time:
Type:Silhouette image of generic DH8A model; specific model in this crash may look slightly different    
de Havilland Canada DHC-8-103
Owner/operator:Aspire Aviation
Registration: C-GWRI
MSN: 098
Year of manufacture:1988
Fatalities:Fatalities: 0 / Occupants: 26
Other fatalities:0
Aircraft damage: None
Location:220 nm NW of Vancouver, BC -   Canada
Phase: En route
Nature:Passenger
Departure airport:Vancouver International Airport, BC (YVR/CYVR)
Destination airport:Masset Airport, BC (ZMT/CZMT)
Confidence Rating: Information verified through data from accident investigation authorities
Narrative:
An Aspire Aviation Limited DHC-8-103 airplane, was conducting flight TSH1202 from Vancouver Int'l Airport (CYVR), BC to Masset (CZMT), BC with 3 crew members and 23 passengers on board. During cruise at 22 000 feet above sea level, multiple left-hand electrical bus system malfunctions occurred without annunciation indications. The pressurization indication panel became unserviceable and the cabin altitude began to climb. The flight crew decided to return to CYVR, descended to 11 000 feet, and completed the actions listed in the Quick Reference Handbook. The flight crew declared a PAN PAN with ATC.
Maintenance found the left-hand transformer-rectifier unit undervoltage relay (part number 2431-K19) faulty. The relay was replaced and testing was completed in accordance with the aircraft maintenance manual. The system tested serviceable and the aircraft was returned to service.

Sources:

TSB

History of this aircraft

Other occurrences involving this aircraft

11 December 2022 C-GWRI Summit Air 0 near Thunder Bay, ON non
Engine failure

Revision history:

Date/timeContributorUpdates
21-Sep-2021 16:29 harro Added
22-Sep-2021 10:09 harro Updated [Date]

Corrections or additions? ... Edit this accident description

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