What is the phraseology used to direct an inbound aircraft to enter the right base?

The phraseology "ENTER RIGHT BASE" is used to instruct an inbound aircraft to position itself to approach the airport by entering the right side of the final approach path. This command is direct and unambiguous, ensuring that the pilot understands the specific maneuver required for the landing sequence.

In air traffic control operations, clarity in communication is essential for safety and efficiency. The phrase "ENTER RIGHT BASE" clearly indicates to the pilot that they should fly to the right side of the landing runway before turning onto the final approach. This is vital in maintaining the proper sequencing of aircraft in the vicinity of the airport.

The other phrases do not communicate this specific action as effectively. "RIGHT BASE APPROACH" could imply a general approach but lacks the directive clarity needed. "PROCEED TO RIGHT BASE" suggests a movement towards the right base without the explicit direction to enter, which could lead to confusion. "RIGHT BASE ENTRY" is similarly vague and does not utilize the standard language expected in these situations. Therefore, "ENTER RIGHT BASE" is the correct phraseology for directing an inbound aircraft to align appropriately for landing.