Refer to figure.
ICAO Doc 4444
Appendix 2 - FLIGHT PLAN
ITEM 15: ROUTE
(a) Cruising speed (maximum 5 characters)
INSERT the True airspeed for the first or the whole cruising portion of the flight, in terms of:
Kilometres per hour, expressed as K followed by 4 figures (e.g. K0830), or
Knots, expressed as N followed by 4 figures (e.g. N0485), or
True Mach number, when so prescribed by the appropriate ATS authority, to the nearest hundredth of unit Mach, expressed as M followed by 3 figures (e.g. M082).
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