SASless:
Your other comment about the lack of Needle Split on some aircraft.......just how do you check for proper function of the Free Wheeling Unit?
You don't, at least not in a Bell 206, FH1100, H-500 or just about anything else powered by the RR250 series.
You do this before start, by turning the main rotor backward. (Haven't we been through this like a million times?)