Definition
An accident in which a fully airworthy aircraft, under the control of a qualified pilot, is unintentionally flown into the ground, water, or an obstacle. The aircraft is operating normally and responding to control inputs at the moment of impact; the pilot is simply unaware that a collision is imminent.
Plain English
A crash where the airplane is working perfectly and the pilot is flying it normally — but they don't realize they're about to hit something until it's too late.
Context Anchor
Seen in accident reports, safety training, approach planning, night flying, and flight in poor visibility or near rising ground.
Derivation
The phrase is built to contrast with 'loss of control' accidents. 'Controlled flight' emphasizes that nothing is wrong with the aircraft or the pilot's handling of it — the airplane is doing exactly what the pilot is asking. The tragedy is that what the pilot is asking leads straight into the ground.
Why Pilots Care
CFIT accounts for a significant share of fatal accidents, especially at night or in mountainous areas, and is largely preventable with awareness and warning systems.
Grounding Statement
A pilot can be flying a perfectly controllable airplane and still hit terrain if they do not know exactly where the aircraft is in relation to the ground.
Intuition Check
Controlled does not mean safe or intentional here. It means the aircraft was still flyable and responding normally when it struck terrain.
Example Sentence 1
The accident was classified as Controlled Flight Into Terrain after investigators confirmed the engine and flight controls were functioning normally at impact.
Example Sentence 2
The crew avoided controlled flight into terrain when the GPWS issued a terrain warning and they immediately climbed.