Authorities believe everyone on board a passenger plane and a US Army helicopter that collided in mid-air before crashing into a river in Washington DC on Wednesday have been killed. An American ...
The US National Transportation Safety Board (NTSB) is calling for enhanced visual and audio alerts on all traffic alert and collision avoidance (TCAS) systems when the equipment is disabled or ...
The crash late Wednesday of American Eagle Flight 5342 near Reagan National Airport has brought fresh attention to a technology known as a Traffic Alert and Collision Avoidance System, or TCAS, which ...
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