What happened
On January 10, 2008, at 08:35 mountain standard time, an Airbus Industrie 319, registration C-GBHZ, was climbing from FL360 to FL370 approximately 38 nautical miles south of Penticton, BC. During this climb, the aircraft experienced a sudden upset characterized by an uncommanded right roll of 36 degrees, followed by a 57-degree left roll and a nose-down pitch.
Following the upset, the crew declared an emergency and diverted the flight to Calgary. The aircraft landed in Calgary without further incident. There were 83 passengers and 5 crew members on board the aircraft. The event resulted in 11 minor injuries, consisting of 2 crew members and 8 passengers, with 0 fatalities.