In-flight loss of consciousness.
D000328:Adult; D000337:Aerospace Medicine; D001274:Atmospheric Pressure; D006112:Gravitation; D006801:Humans; D000860:Hypoxia / Q000150:complications; D008297:Male; D008875:Middle Aged; D012640:Seizures / Q000150:complications; D013575:Syncope / Q000150:complications; D014474:Unconsciousness / Q000453:epidemiology / Q000209:etiology*