风切变
Quebecair flight 714, a charter flight from Toronto, crashed on its approach to Hewanorra International Airport on 19 February 1979. Wind shear caused the aircraft to halt its descent. The copilot, who was flying at the time, retarded the throttles, but the aircraft had just passed the wind shear zone, and the nose slammed into the runway and bounced twice, destroying the nose landing gear. There were no fatalities and only minor injuries. The aircraft was damaged beyond repair and was written off.