What does "Cleared for Immediate Take Off" mean?
There seems to be some confusion over this (especially frustrating when pilot is asked whether ready for immediate).
From MATS Part 1:-
When given the instruction "cleared for immediate take off" it is expected that the pilot will act as follows:
a) At the holding point, taxi immediately on to the runway and commence take-off without stopping the aircraft
b) If already on the runway, take off without delay.
What do you understand by the phrase, and more importantly, why do pilots seem to stop on the runway when given such a clearance?