Our problem is not so much with the new RPAR kit, as the manner in which (new).......
That is a very contentious comment. The training of RPAR controllers is exactly the same as it was for CR62. The problems occur because of the extra restrictions put on the kit because of it's unreliability, and the changes made to passing information on the ac's relation to the GP based on a height/Alt chart rather than the ac's radar/digital response.
WTI can gives good indication of how an ac is correcting to the GP but, we're not allowed to use it! Sensitivity of the equipment leads to a variation in ralation to the GP for high tailed ac ( 1 reading from the tail, 1 from the UC) leading to controllers having to judge a mean. If they don't then the pilot is flooded with GP correction info.
I'd say that RPAR has the potential to be very good...it is accurate and unaffected by weather/clutter. But there is no doubt that software glitches need to be dealt with AND confidence restored in its use both by controllers and aircrew.