Collision Avoidance Systems/TCAS covers airborne traffic alert and collision avoidance equipment that interrogates and receives Mode C and Mode S transponder replies via 1030/1090 MHz RF links to compute intruder bearing, altitude, and closure rate, generating Traffic Advisories (TAs) and Resolution Advisories (RAs) in conformance with ACAS II standards and DO-185B/ED-143 requirements.
Who really supplies this sector?
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