Originally Posted by
NigelOnDraft
Surely any aircraft in IMC is receiving a minimum of RAS?
In my experience, there are a number of parts of the UK where, depending on time and day, a radar service outside controlled airspace is only available on an adhoc basis. In the South there are also a number of places where a RAS is impractical as there isn't enough space to get 5 miles and/or 1000 feet against any other OCAS traffic.
The choice is either live with the risk (after all on an IMC day there are a lot less aircraft - and statistically mid-airs only happen in good VMC conditions) or don't fly on IMC days other than on airways flight plans from airports with radar approach control .