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Signals for the control of aerodrome traffic

Symbols near wind direction indicator
Ground signal
Description White cross Double white cross Horizontal white dumbbell
Where displayed
  1. (a)Adjacent to wind direction indicator
  2. (b)On manoeuvring area
Adjacent to wind direction indicator Adjacent to wind direction indicator
Meaning
  1. (a)Aerodrome completely unserviceable
  2. (b)An area marked by a cross or crosses with the limit delineated by markers is unfit for use by aircraft
Gliding operations in progress Use only hard surface movement areas. Where there are sealed and gravel manoeuvring areas, use only the sealed surfaces. Where there are constructed gravel and natural surface manoeuvring areas, use only the gravel surfaces. (See ERSA FAC for any local information relating to the dumbbell signal)
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