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Surveillance

Lateral

5nm

  • Enroute positions

3nm

  • ADC positions
  • TCU positions

Note

The 3nm standard may be used by Enroute controllers providing top-down to a TCU, only if a seperate air display is used for the TCU position. Otherwise, 5nm standard must be used in the TCU

Vertical

500ft

  • Between an IFR and VFR aircraft where;
    • Both aircraft have Light Wake Turbulence Category; and
    • Both aircraft are at or below 10,000ft; and
    • Traffic information is passed to the IFR aircraft

1000ft

  • Between any aircraft at or below F290
  • Between 2 RVSM-approved aircraft at or below F410

2000ft

  • Between any aircraft that is experiencing Severe Turbulence at any level
  • Between all aircraft above F410
  • Between F290 and F410 inclusive;
    • When at least 1 aircraft is not RVSM-approved
    • Between military formation aircraft, regardless of RVSM status

3000ft

  • When at least one aircraft is supersonic

Wake Turbulence

Lead Aircraft Following Aircraft Distance (NM)
Super (A380) Super -
Heavy 6*
Medium 7*
Light 8*
Heavy Heavy 4
Medium 5
Light 6*
Medium Heavy -
Medium -
Light 5
* = Relevant to Enroute