212 - no, I don't think "ordinary" RAIM identifies the faulty satellite - it just says there is a problem. Type RAIM into wikipedia and see if you agree with my interpretation. Its true that many GPSs allow you to deselect satellites but that is no good if you don't know which one to turn off.
CAA Spec 22 that we know and love, says that in the event of the RAIM alarm limit being exceeded, you have to navigate by other means (and that is just when using for en-route!)
FDE RAIM does it all automatically (that's part of the tso145/6 spec) and if you have WAAS (SBAS) then FDE RAIM is not really necessary because the SBAS signal tells your receiver to ignore dodgy satellites - even if it doesn't have enough for FDE RAIM
HC
Last edited by HeliComparator; 2nd May 2008 at 21:50.