This handbook provides information on an airline pilot's physical and mental status and related medical factors which may affect his/her performance. Contents include information on the physical examination for pilots, the flyer's environment, hypoxia, hyperventilation, gas in the body, the ears, alcohol, drugs and flying, carbon monoxide, vision, night flight, cockpit lighting, disorientation, motion sickness, fatigue, noise, age, and some psychological aspects of flying. (CS)