The really frustrating thing for me at the moment is I can't remember what we have in the plane! I might have to pop down and have a look tomorrow!
But from this list:
Transponder
ADF
DME
VOR (ideally x2)
ILS
I know we have a DME, Transponder, and one VOR/ILS. I'm pretty sure we don't have an ADF, but not 100% sure.
Assuming that is accurate, is that good enough? And when I say good enough, I really mean to use in anger, not just to pass a test.