Aeroflot Flight 593 crashed because the pilot let his kids fly the plane, who unknowingly disengaged the autopilot function. The crash killed everyone on board.
On 23 March 1994, the jet aircraft was en route from Sheremetyevo International Airport in Moscow to Kai Tak Airport in Hong Kong with 75 occupants aboard, of whom 63 were passengers. Relief pilot Kudrinsky was taking his two children on their first international flight, and they were brought to the cockpit while he was on duty. Five people were thus on the flight deck: Kudrinsky, co-pilot Piskaryov, Kudrinsky's children Eldar and Yana, another pilot, Vladimir Makarov, who was flying as a passenger.
With the autopilot active, Kudrinsky, against regulations, let the children sit at the controls. First, his daughter Yana took the pilot's left front seat. Kudrinsky adjusted the autopilot's heading to give her the impression that she was turning the plane, though she actually had no control of the aircraft. Shortly thereafter, Kudrinsky's son Eldar occupied the pilot's seat. Unlike his sister, Eldar applied enough force to the control column to contradict the autopilot for 30 seconds. This caused the flight computer to switch the plane's ailerons to manual control while maintaining control over the other flight systems. A silent indicator light came on to alert the pilots to this partial disengagement. The pilots, who had previously flown Soviet-designed planes that had audible warning signals, apparently failed to notice it.