Alaska Airlines said the aircraft involved was a 76-seat Horizon Air Q400 turboprop plane. The plane landed upside down and was "highly fragmented," NTSB said Saturday.

Five years ago, a Horizon Air employee stole a Q400 Turbojet from the airport's cargo area and crashed it on Ketron Island.

A Horizon worker stole a plane from Sea-Tac Airport Friday night. Witnesses shared footage of the plane's erratic flight before it crashed in Pierce County.

Video showed the Horizon Air Q400 doing large loops and other dangerous maneuvers as the sun set on Puget Sound. There were no passengers aboard.

Preliminary information suggests that the 29-year-old mechanic stole the Horizon Air Q400 and the crash occurred because the person was “doing stunts in air or lack of flying skills,” the ...

A 28-year-old Horizon employee who stole an empty plane from Sea-Tac Airport communicated with air traffic control before crashing on a small Pierce County island.

“What was unique to Horizon Airlines is a combination of (the pilot shortage) and they were divesting in the Q400 aircraft and transitioning to the Embraer 175, which gives them more seats, and ...

This is the first picture of "suicidal" Horizon Air employee Richard Russell who died after crashing a stolen plane on an island outside Seattle.

Tom Banse / NW News Network Alaska Airlines and ZeroAvia said the retrofitted Q400 would become the world's largest zero-emission aircraft when it makes its first test flight next year.