ICAO Doc 4444
12.3 ATC Phraseologies
Circumstances | Pilot | ATC (controller) |
---|---|---|
After a flight starts to deviate from any ATC clearance or instruction to comply with a TCAS RA | TCAS RA | ROGER |
After the response to a TCAS RA is completed and a return to the ATC clearance or instruction is initiated | CLEAR OF CONFLICT. RETURNING TO (assigned clearance) | ROGER (or alternative instruction) |
After the response to a TCAS RA is completed and the assigned ATC clearance or instruction has been resumed | CLEAR OF CONFLICT (assigned clearance) RESUMED | ROGER (or alternative instruction) |
After an ATC clearance or instruction contradictory to the TCAS RA is received, the flight crew will follow the RA and inform ATC directly | UNABLE, TCAS RA | ROGER |
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