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What is the turn made by an aircraft during the initial approach to the runway between the end of the outbound track and the beginning of the intermediate or final approach track, where the tracks are not reciprocal?
  • A
    Reversal orbit
  • B
    Race track
  • C
    Base turn
  • D
    Procedure turn

Refer to figure.
ICAO Doc 8168
Chapter 1 - DEFINITIONS

Procedure turn. A manoeuvre in which a turn is made away from a designated track followed by a turn in the opposite direction to permit the aircraft to intercept and proceed along the reciprocal of the designated track.

Racetrack procedure. A procedure designed to enable the aircraft to reduce altitude during the initial approach segment and/or establish the aircraft inbound when the entry into a reversal procedure is not practical.

Base turn. A turn executed by the aircraft during the initial approach between the end of the outbound track and the beginning of the intermediate or final approach track. The tracks are not reciprocal.

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