As the investigation begins into the cause of the mid-air crash between an American Airlines regional passenger jet and a U.S. army Black Hawk helicopter, questions have been raised about the role ...

What 'rush hour' looks like in New York on the TCAS system. (Alamy) Authorities believe everyone on board a passenger plane and a US Army helicopter that collided in mid-air before crashing into a ...

Obviously encouraged by the fact that no midair accidents involving commercial aircraft have taken place since traffic alert and collision avoidance systems (TCAS ...

— -- Question: Hi captain, is it compulsory to have the TCAS (Traffic Collision and Avoidance System) working within the USA and Europe? Can you explain how it works? — submitted by reader ...

The American Airlines plane in the Potomac River after it collided in midair with a military helicopter and crashed in Washington, DC. Photo: Getty Images The American Airlines flight from Wichita, ...

Answer: You ALWAYS follow the TCAS command. There was a tragic collision between a Tupolev 154 and a Boeing 757 because of exactly this question. The Tupolev followed the controller command while the ...

The first collision between airliners occurred in 1922 in France. The loss of both airplanes and all occupants proved the need for better air-traffic control. Following the accident investigation, ...