Years or even decades ago I heard about a passenger plane that flew in the skies full of brain-dead passengers and crew members. I forgot what plane it was, what airline, and where it happened.
Now I saw another version of the documentary. It was a Greek plane: Helios Airways Flight 522, a passenger flight from Cyprus to Prague, Czech Republic, with a stopover to Athens, Greece.
A plane full of brain-dead people, flying on autopilot until it ran out of fuel and crashed -- something impressive and macabre about it.