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In accordance with ICAO Doc 4444, when a MEDIUM aircraft precedes a LIGHT aircraft using the same runway, or parallel runways separated by less than 760 m, the wake turbulence radar separation minima on the approach or departure phases of flight shall be…

  • A
    4 NM
  • B
    5 NM
  • C
    3 NM
  • D
    2 NM

Refer to figure.
ICAO Doc 4444
8.7.3 Separation minima based on ATS surveillance systems

8.7.3.4 The following distance-based wake turbulence separation minima shall be applied to aircraft being provided with an ATS surveillance service in the approach and departure phases of flight in the circumstances given in 8.7.3.4.1.

8.7.3.4.1 The minima set out in 8.7.3.4 shall be applied when:

a) an aircraft is operating directly behind another aircraft at the same altitude or less than 300 m (1000 ft) below; or
b) both aircraft are using the same runway, or parallel runways separated by less than 760 m (2500 ft); or
c) an aircraft is crossing behind another aircraft, at the same altitude or less than 300 m (1000 ft) below.

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