HI Matze,
aufm Atlantik wird auch nur nach MACH geflogen, denn so wird dort auch seperiert
Hier ein Auszug um es deutlich zu zeigen
The longitudinal seperation of aircraft meeting MNPS Airspace shall be 10 minutes, provided the mach number technique is applied.
Seperation can be reduced to 10 to 5minutes inclusive to :-
9 minutes, if the preceding aircraft is Mach .02 faster than the following aircraft
8 minutes, if the preceding aircraft is Mach .03 faster than the following aircraft
7 minutes, if the preceding aircraft is Mach .04 faster than the following aircraft
6 minutes, if the preceding aircraft is Mach .05 faster than the following aircraft
5 minutes, if the preceding aircraft is Mach .06 faster than the following aircraft