You can contribute by submitting additional or updated information.
| Date: | Friday 14 November 2025 |
| Time: | 21:15 UTC |
| Type: |  Bombardier Challenger 604 |
| Owner/operator: | Chartright Air |
| Registration: | C-GBBB |
| MSN: | 5556 |
| Year of manufacture: | 2003 |
| Engine model: | GE CF34-3B |
| Fatalities: | Fatalities: 0 / Occupants: |
| Other fatalities: | 0 |
| Aircraft damage: | Unknown |
| Location: | near Toronto, ON -
 Canada
|
| Phase: | En route |
| Nature: | Passenger - Non-Scheduled/charter/Air Taxi |
| Departure airport: | Toronto-Pearson International Airport, ON (YYZ/CYYZ) |
| Denver-Centennial Airport, CO (APA/KAPA) | |
| Investigating agency: | TSB |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
Chartright Air flight HRT556, a Challenger 604, was climbing through approximately FL315 when the flight crew received a Master Warning EICAS “R ENGINE OIL” along with an aural “engine oil” alert, accompanied by a low oil pressure indication of 25 psi on the No. 2 engine (GE CF34-3B). The crew reduced the climb rate and retarded thrust on the No. 2 engine while actioning the quick reference handbook. Oil pressure temporarily recovered. The flight crew advised ATC of the situation and elected to return to CYYZ. The No. 2 engine remained at idle for the return; however, at approximately FL240, the low oil pressure indications and accompanying symptoms reappeared. The crew shut down the No. 2 engine and declared a MAYDAY. The aircraft landed uneventfully at CYYZ with aircraft rescue and firefighting on standby.
Sources:
TSB A25O0172
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Dec-2025 08:32 | ASN | Added |
| 02-Dec-2025 08:34 | ASN | Updated [Aircraft type, Location, Phase, Nature, Narrative, ] |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2025 Flight Safety Foundation