Originally Posted by IO540
An RAS is available only to IFR flights in Class G.
And yes it could take you into IMC, in which case you have to refuse the instruction if you don't have an IMC Rating or an IR.
In fact, you have to refuse the service rather than a particular instruction.
The original question relates to text from a book which is ambiguous. I suspect what it was trying to say was "...only available to aircraft operating under IFR...If the pilot is not qualified to fly under IFR, he should not accept an RAS
because the controller's instructions might take the aircraft into IMC".