Originally Posted by
GrummanCT
FMS 3000 (525B)
DA - Approach
MDA - Nav
VOR (if green needle) *must be flown in approach mode.
Localizer (no gs) - Nav
Backcourse - BC
CJ3/CJ4 driver; I agree with the above. Only thing I'd add is to be in APPR when shooting a LOC to get it to auto-sequence to green needles, then once it's sequenced to green needles, go back to NAV so it won't possibly pick up an errant GS and blow through your MDA (I think the book, at least the FSI training manual, has words to this effect).