Squadgy.
You're correct. I left out the Barton Aerobatic procedure to try and make the post a bit more digestable! When you're active with the aerobatic procedure we also make all SID's which could be affected. (24L/R DESIG. POL. On 06L WAL NOKIN MONTY). Subject to a departure release with Man APP and apply a non-standard departure if required. The aerobatic procedure also requires us to stop all 'early right turn' departures when on 24R/L. This is the reason we have the time slot limitation on the aerobatics.
Re the co-ordination required to manage a departure release....It goes like this. Air departures ring Approach requesting release....Approach issue non-standard departure clearance if required.....Approach ring the appropriate Area sector and inform them of the NSD applied. That's just the telephone work you don't hear on the frequency. This string would apply to all relevent SID's individually. Needless to say all the standard phone calls and RTF are still going on as normal.
Spiney.