UK CLASS D & CONTROLLER CAPACITY
I realise that this question is bit like asking "how long is a piece of string", but here goes anyway!
In the UK we have Class D CTR/A's with considerably varying levels of activity, and proposals for more to come as well. So let us firstly discount the Gatwicks & Manchesters, and stick to those with fewer fixed wing ATMs. Say those with between 10,000 and 40,000 ATM movements per year, i.e. an average of between 2.0 and 7.8 movements per hour for an 14hr/day operation.
How many simultaneous VFR transiting aircraft should it possible for ATC to handle? Please include as many or as few caveats as you see fit.
Thanks.