reasons behind speed control
hye, anybody knows the the base on which the rules about speed control are made?
the rules which is specified in icao doc 4444 are: At levels at or above 7 600 m (FL 250), speed adjustments should be expressed in multiples of 0.01 Mach; at levels below 7 600 m (FL 250), speed adjustments should be expressed in multiples of 20 km/h (10 kt) based on indicated airspeed (IAS).
Speed reductions to less than 460 km/h (250 kt) IAS for turbojet aircraft during initial descent from cruising level should be applied only with the concurrence of the flight crew.
Last edited by mxwbuaa; 5th November 2011 at 14:03.