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A TCAS Resolution Advisory (RA) response maneuver is completed and a return to the ATC clearance or instruction is initiated. Choose the correct pilot and controller interchange:

(1) Clear of conflict, returning to FL240
(2) Clear of conflict, resuming FL240
(3) Roger
(4) Affirmative

  • A

    (1) Pilot; (4) Controller.

  • B

    (2) Pilot; (3) Controller.

  • C

    (2) Pilot; (4) Controller.

  • D

    (1) Pilot; (3) Controller.

ICAO Doc 4444
12.3 ATC PHRASEOLOGIES

... after a flight crew starts to deviate from any ATC clearance or instruction to comply with an ACAS resolution advisory (RA) (Pilot and controller interchange) Pilot: TCAS RA;
ATC: ROGER
... after the response to an ACAS RA is completed and a return to the ATC clearance or instruction is initiated (Pilot and controller interchange) Pilot: CLEAR OF CONFLICT, RETURNING TO (assigned clearance);
ATC: ROGER (or alternative instructions);
… after the response to an ACAS RA is completed and the assigned ATC clearance or instruction has been resumed (Pilot and controller interchange) Pilot: CLEAR OF CONFLICT (assigned clearance) RESUMED;
ATC: ROGER (or alternative instructions);
… after an ATC clearance or instruction contradictory to the ACAS RA is received, the flight crew will follow the RA and inform ATC directly (Pilot and controller interchange) Pilot: UNABLE, TCAS RA;
ATC: ROGER

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