There's a thread open on the ATC Forum re this - but for info, from UK CAP493 Manual of Air Traffic Services Part 1 =
Cancelling take-off :
1) (A/c identity) hold position, Cancel take-off – I say again cancel takeoff – acknowledge. Aircraft has not commenced take-off.
2) (A/c identity) stop immediately – I say again (a/c identity) stop
immediately – acknowledge. Aircraft commenced take-off.
Don't know what the USA equivalent should be.
Last edited by Eric T Cartman; 22nd Jun 2011 at 20:26.