Horizontal separation - Independent parallel approaches. A minimum radar separation shall be provided until aircraft are established inbound on the ILS localizer course and/or MLS final approach track. This minimum is, when independent parallel approaches are being conducted:;
1, 2, 3 or 5nm?
The answer given is 3 (although it could be as low as 2.5nm).
I thought that the 2.5nm separation could only be applied once the two aircraft are established on the same localiser not beforehand as the question states.
Clarification would be great.
Many thanks!