In the heart of the TMA we are allowed to use 3nm lateral separation whereas on some of the outer edges of the TMA and in the upper air, 5nm is required due to the conditions of being allowed to use 3nm not being met.
I'm not 100% sure about final approach spacing. I know they can go down to 2.5nm. I'll let an approach controller answer that one.
Last edited by Scuzi; 4th September 2008 at 12:40.