Aeroflot Flight 593 was an Airbus A310 flight that crashed in Siberia on 23 March 1994 after the autopilot was partly disengaged while the captain's children were in the cockpit. The tragedy was widely covered in air crash investigations and documentaries, which helped the flight number become well known online. Short cockpit alert sounds linked to the case are now shared as meme audio, used far from the original context to signal an aircraft emergency, a simulator mistake or a situation spiralling out of control.