AD 1.9 VISUAL SIGNALS

• 1 AERODROME CONTROL TO AIRCRAFT
  • 1.1 General
    • 1.1.1 Visual signals used by aerodrome control to aircraft when radio communications are not available are included in Table AD 1.9-1.

      Table AD 1.9-1
      Visual Signals

      Colour and Type of Signal	To Aircraft in Flight	To Aircraft on the Aerodrome
      Steady green	Cleared to land	Cleared for take-off
      Steady red	Give way to other aircraft and continue circling1	Stop
      Series of green flashes	Return for landing2	Cleared to taxi
      Series of red flashes	Aerodrome unsafe -- do not land	Taxi clear of landing area in use
      Series of white flashes	Land at this aerodrome and proceed to apron2	Return to starting point on aerodrome
      Series of alternate red and green flashes	Danger -- be on the alert	Danger -- be on the alert
      Red pyrotechnic	Notwithstanding any previous instructions do not land for the time being
      1 circling means continue tracking via the aerodrome traffic circuit. Do not orbit in position. 2 Clearance to land and taxi will be given in due course.

• 2 AIRCRAFT TO AERODROME CONTROL
  • 2.1 General
    • 2.1.1 When the pilot of a non-radio equipped aircraft wishes to acknowledge a message from the tower they should do so in the following manner:
      • (a) By day:
        • (i) in flight: rocking the wings.
        • (ii) on the ground: moving the ailerons or rudder.
      • (b) By night:
        • (i) flashing the lights twice; or
        • (ii) if not equipped with landing lights, flashing the navigation lights twice.
• 3 AERODROME GROUND SIGNALS