What Is TCAS? A Comprehensive Guide to Traffic Collision Avoidance Systems
Pilot Institute
JULY 4, 2025
In 1956, a United Airlines DC-7 and a TWA Constellation collided over the Grand Canyon, killing all on board. The scale of the tragedy prompted the aviation industry to explore technology that could prevent mid-air collisions. This includes some business jets, turboprops, and regional airliners mandated to have it.
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