ShyTorque, 240ktas would give you a nice round 4 NM/min.
Interesting answer, which i assume applies to any UK based service - be it EMS or transport. Does this mode S transponders limit apply only in UK, and if so is that only over land? Some of the North Sea drivers must wish machine cruise speeds higher?
Am i right in assuming that the real limitation is more the machine range? So cruise speed increase only really benefits a machine capable of long range/endurance?