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| Date: | Saturday 11 December 2021 |
| Time: | 19:57 UTC |
| Type: |  Boeing 737 MAX 8 |
| Owner/operator: | Westjet |
| Registration: | C-GAMQ |
| MSN: | 60518/7241 |
| Year of manufacture: | 2018 |
| Engine model: | CFMI CFM LEAP-1B |
| Fatalities: | Fatalities: 0 / Occupants: 173 |
| Other fatalities: | 0 |
| Aircraft damage: | None |
| Location: | 430 nm SW from Vancouver, BC -
 Pacific Ocean
|
| Phase: | En route |
| Nature: | Passenger - Scheduled |
| Departure airport: | Vancouver International Airport, BC (YVR/CYVR) |
| Honolulu-Daniel K. Inouye International Airport, HI (HNL/PHNL) | |
| Investigating agency: | TSB |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
A WestJet Boeing 737 MAX 8, was conducting flight WS1862 from Vancouver Intl. (CYVR), BC to Honolulu International Airport, Hawaii (PHNL). During cruise prior to ETOPS approximately 430nm SW of CYVR, the flight crew received an indication of oil filter bypass on left hand engine. The flight crew actioned the appropriate checklist, declared a mayday with Oakland oceanic, performed a precautionary shutdown and diverted back to CYVR where it landed without further incident.
Sources:
TSB A21F0224
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Dec-2021 20:16 | harro | Added |
| 14-Dec-2021 20:37 | harro | Updated [Cn, Location, Country, ] |
| 04-Jan-2022 13:48 | Aerossurance | Updated [Location, ] |
| 04-Jan-2022 13:49 | Aerossurance | Updated [Location, ] |
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