TIL Helios 522 was a case of a “Ghost Plane”, the cabin didn’t pressurize and all but one on board passed out from hypoxia. The plane circled in a holding pattern for hours driven by autopilot before flight attendant Andreas Prodromou took over the controls, crashing into a rural hillside.
https://en.wikipedia.org/wiki/Helios_Airways_Flight_522
Posted by Panikos0