Accidents and Incidents/Hypoxia
Hypoxia
Aviation Accidents and Incidents related to the story of MH370
25 October 1999 South Dakota Learjet crash
14 August 2005 Helios Airways Flight 522
See also perhaps https://www.flightsafetyaustralia.com/2019/08/hypoxia-lulled-pilot-into-fatal-error/
September 5, 2015 British Aerospace 125 air ambulance (6V-AIM) 7 Hypoxia (presumed) Atlantic Ocean(off Dakar, Senegal) Collided with a CEIBA Intercontinental Boeing 737 near Tambacounda, Senegal, flew westerly for about an hour without making any radio calls, then disappeared. Investigators believe that the 737's winglet struck 6V-AIM's fuselage, resulting in uncontrolled decompression which incapacitated everyone on board; 6V-AIM then flew until it ran out of fuel and crashed into the ocean. No trace of 6V-AIM or its 7 occupants was ever found. The 737 landed safely.[195] https://en.wikipedia.org/wiki/List_of_missing_aircraft