AIRSPEED INDICATOR OR TRUE AIRSPEED INDICATOR MARKINGS

AIRSPEED INDICATOR OR TRUE AIRSPEED INDICATOR MARKINGS
  Airspeed indicator or true airspeed indicator markings and their color code significance







White Arc- 50 - 95 - Full Flap Operating Range
                                 Lower limit is maximum weight Vso in landing configuration.
                                 Upper limit is maximum speed permissible with flaps extended

Green Arc-58 - 128.5- Normal Operating Range Lower limit is maximum weight VS1 with flaps retracted.
                                     Upper limit is maximum structural cruising speed

Yellow Arc- 128.5 - 165- Operations must be conducted with caution and only in smooth air

Red line- 165-         Maximum speed for all operations.