Seattle plane crash: Experts baffled by 'incredible manoeuvres’ performed by airline worker who hijacked aircraft

• US aviation chiefs are struggling to work out how the ground crew worker who stole a plane at Seattle airport last week carried out a series of "incredible" loops and stunts before crashing off the coast of Seattle. Flight experts are still investigating how 29-year-old Horizon Air employee Richard Russell managed to start the Q400 turboprop aircraft, take off, then carry out a series of “incredible” manoeuvres. Audio recordings from the cockpit have revealed 29-year-old Horizon Air employee Richard Russell explaining how he picked up flight knowledge from video games.