A collision or a near collision on the ground or in the air, between an aircraft and another aircraft, terrain or obstacle [1], including near-controlled flight into terrain (near CFIT).
Collision ou quasi-collision, au sol ou en l'air, entre un aéronef et un autre aéronef, le sol ou un obstacle [1], y compris quasi-impact avec le sol sans perte de contrôle (quasi-CFIT).