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| Date: | Sunday 28 August 2022 |
| Time: | 22:45 UTC |
| Type: |  de Havilland Canada DHC-8-402Q Dash 8 |
| Owner/operator: | Air Canada Express, opb Jazz Aviation |
| Registration: | C-GGMZ |
| MSN: | 4399 |
| Year of manufacture: | 2012 |
| Engine model: | P&W Canada PW150 |
| Fatalities: | Fatalities: 0 / Occupants: 66 |
| Other fatalities: | 0 |
| Aircraft damage: | None |
| Location: | NE of London, ON -
 Canada
|
| Phase: | En route |
| Nature: | Passenger - Scheduled |
| Departure airport: | Toronto-Pearson International Airport, ON (YYZ/CYYZ) |
| London-Metropolitan Area Airport, ON (YXU/CYXU) | |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
Air Canada flight AC8259, a DHC-8, was at 8000 feet ASL and beginning the descent to London International airport, Ontario (CYXU) when the #1 engine briefly lost 30% torque, RPM followed by a momentary flashing of a caution light. The flight crew requested that ATC allowed the aircraft to maintain their current altitude. While communicating with ATC the same event occurred with the #1 engine. This similar event occurred six times and the crew decided to shutdown the engine. The flight crew followed the QRH procedures, decided to divert to Toronto Lester B. Pearson International Airport (CYYZ) and declared a PAN PAN. The aircraft landed uneventfully on Runway 15L with ARFF standing by. After a ground inspection the aircraft was allowed to taxi to the gate.
Maintenance replaced the #1 Propeller Electronic Control Unit and the #1 quadrant condition lever. The aircraft was returned to service.
Sources:
TSB
History of this aircraft
Other occurrences involving this aircraft
| 20 August 2022 | C-GGMZ | Air Canada Express, opb Jazz Aviation | 0 | NW of Toronto, ON | |
non |
| 28 January 2023 | C-GGMZ | Air Canada Express, opb Jazz Aviation | 0 | Grande Prairie Airport, AB (YQU/CYQU) | |
non |
| Runway excursion | ||||||
| 26 August 2025 | C-GGMZ | Air Canada Express, opb Jazz Aviation | 0 | Edmonton International Airport, AB (YEG/CYEG) | |
min |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Sep-2022 14:43 | harro | Added |
| 16-Sep-2022 14:45 | harro | Updated |
Corrections or additions? ... Edit this accident description
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