As I understand it, the 'slot' is not a real 'slot' as no one can prevent an executive movement? There is not an hourly allocation, it is merely to ensure advance notification of exec movements, the purpose of which must be advance ground stand allocation? I am not too sure what happens when demand outstrips supply though?
This is the first stage of a 3 tier system which ultimately could limit exec movements during peak periods via real 'slots'.
With well over 30 night stopping airliners at times this coming summer, rumours of 2-4 stands short for parking?
Continuation of: http://www.pprune.org/forums/showthread.php?p=3197942#post3197942