ASN Wikibase Occurrence # 247391
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| Date: | Friday 22 January 2021 |
| Time: | c 22:00 LT |
| Type: |  Bombardier CRJ-900LR |
| Owner/operator: | Air Canada Express, opb Jazz Air |
| Registration: | C-GJZS |
| MSN: | 15422 |
| Fatalities: | Fatalities: 0 / Occupants: 20 |
| Aircraft damage: | None |
| Location: | 244.00 nm NE from CYYZ -
 Canada
|
| Phase: | En route |
| Nature: | Passenger - Scheduled |
| Departure airport: | Toronto-Pearson International Airport, ON (YYZ/CYYZ) |
| Moncton-Metropolitan Area Airport, NB (YQM/CYQM) | |
| Investigating agency: | TSB |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
A CRJ-900 aircraft operated by Jazz, was conducting Flight AC918 from Toronto Lester B Pearson International Airport (CYYZ), ON to Greater Moncton Roméo LeBlanc International Airport (CYQM), NB with 4 crew members and 16 passengers onboard. Shortly after take off, the flight crew noticed a small engine number 1 fan vibration of 1.4 Mil which is still within acceptable limit. As the aircraft continued climbing, the vibration slowly increased until the aircraft levelled off at FL390 where the vibration reached the yellow arc with an indication from 3.7 to a maximum of 4.0 Mil. The crew actioned the QRH and conducted the applicable trouble shooting.
The captain requested a lower altitude from ATC to reduce power and try to stabilize the vibration.
As the indication was still around 3.3 Mils, the crew declared a Pan Pan, turned back toward CYYZ and shut down the number 1 engine as directed by the QRH. The aircraft landed safely in CYYZ where emergency vehicles were standing by. Engine number 2 fan vibration remained steady around .04 and 0.5 Mil.
Company maintenance conducted an inspection with no defects found. The number one fan blade retaining pins were replaced and the engine tested. Results were within acceptable limits.
Sources:
TSB
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Feb-2021 19:50 | harro | Added |
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