What: Skywest/United Airlines Bombardier Regional Jet en route from Saskatoon to Denver
Where: Regina International Airport
When: DECEMBER 22, 2010
Why: While en route over Saskatchewan, the crew noticed fumes in the cockpit.
The crew deployed oxygen masks, and then made a safe landing after diverting to Regina where passengers disembarked.
The plane was aired out; and it appears that the problem originated from deicing fluid which had been ingested into the aircraft’s auxiliary power unit.
Passengers reboarded and the flight continued on to Denver.

United Airlines flight UA-4632 made an emergency landing in Fargo, North Dakota, on July 9th.