2018 Horizon Air Q400 incident

On August 10, 2018, a Horizon Air Bombardier Dash 8 Q400 was stolen from Seattle–Tacoma International Airport in SeaTac, Washington. The perpetrator, 29-year-old Richard Russell, was a Horizon Air ground service agent with no piloting experience. He performed an unauthorized takeoff and two McDonnell Douglas F-15 Eagle fighters were subsequently scrambled to intercept the aircraft. Sea–Tac air traffic control made radio contact with Russell, the sole occupant, who described himself as a "broken guy, got a few screws loose, I guess." Approximately 1 hour and 15 minutes after takeoff, Russell committed suicide by intentionally crashing the aircraft on the lightly-populated Ketron Island in Puget Sound.

The incident aircraft was a Bombardier Dash 8 Q400, owned by Horizon Air with the registration N449QX and serial number 4410. It had first flown in 2012 and was delivered new to Horizon Air in the same year. It landed at Seattle–Tacoma International Airport at 13:35 local time the afternoon of the incident, after an in-service flight from Victoria, British Columbia. It was not scheduled to fly again that day.

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