Pilot Incapacitation

 Pilot incapacitation, is a state where pilot can't controls aircraft appropriately. Most of them are caused by physical factors but there are several psychological reasons for incapacitation. Some of the common casuses are : not having enough sleep, overworking, mental illneses occured by stress, not breathing enough oxygen. Some of problems must encountered by airline companies and crew because  pilots stress levels are high, sometimes they cant manage to find solution to all their problems.