High Quality Content by WIKIPEDIA articles! Controlled flight into terrain (CFIT) describes a collision whereby an airworthy aircraft, under pilot control, is inadvertently flown into terrain, an obstacle, or water. The term was developed by engineers at Boeing in the late 1970s. The pilots are generally unaware of the danger until it is too late. Pilots with any level of experience, even highly experienced professionals, may commit CFIT. Pilot fatigue, loss of situational awareness, or disorientation may play a role. The incidents often involve a collision with significantly raised terrain such as hills or mountains, and may occur in conditions of clouds or otherwise reduced visibility. CFIT often occurs during aircraft descent to landing, near an airport. CFIT may be associated with subtle equipment malfunctions.

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