

The 1958 collision between United Airlines Flight 736 and a fighter jet, and another U.S. On some occasions, military aircraft conducting training flights inadvertently collide with civilian aircraft. Despite its limitations, it is believed to have greatly reduced mid-air collisions. The system, based on the signals from aircraft transponders, alerts pilots if a potential collision with another aircraft is imminent. Main article: Traffic collision avoidance systemĪlmost all modern large aircraft are fitted with a traffic collision avoidance system (TCAS), which is designed to try to prevent mid-air collisions. Although a rare occurrence in general due to the vastness of open space available, collisions often happen near or at airports, where large volumes of aircraft are spaced more closely than in general flight. The potential for a mid-air collision is increased by miscommunication, mistrust, error in navigation, deviations from flight plans, lack of situational awareness, and the lack of collision-avoidance systems.

Owing to the relatively high velocities involved and the likelihood of subsequent impact with the ground or sea, very severe damage or the total destruction of at least one of the aircraft usually results. In aviation, a mid-air collision is an accident in which two or more aircraft come into unplanned contact during flight.
