BDIONU>>>>
Granted, DD&C has nothing to do with NAS. The point I was trying to make is that Swanwick is still touted as the "Most Advanced" ATC system in the world. It is not. Without the elderly NAS, Swanwick doesn't work very well at all.
NAS shutdowns?
How come Maastricht (for example) don't have to shut down once a week?
DD&C?
Remind me, just how many DD&C options were there? And why was the one were are "stuck with" chosen?
I personally have done many more than the 2-3 a year you mention. Odd that the most advanced system requires us to reduce traffic flows that cause delays for our customers, the airlines. But apparently that's ok, and not a problem.
BEX