Originally Posted by
opnot
una due tfc
at Manchester we have 3 crossing points and with a 4 mile gap I can cross 3 acft . 3nm is not used because if the gap closes below 3miles you have lost separation.With reference to departures all of Manchesters easterly sids except one require 2 mins between departures, plenty of time to cross acft
Interesting, thanks for that. Just out of curiosity why is 4nm the min separation on say 2 B738s?