As a Cirrus SR-22 owner, I'd just comment that there
is a retrofit option of an ADF kit organised by European COPA
in cooperation with Cirrus Design to prevent just the
problem described earlier in the thread.
The CAA obviously has its head in the sand on the whole GPS issue but what's new.
Every plane I've flown in with an ADF, the ADF has pointed
its own sweet way when it wanted, 50's technology which
should have been retired 20 years ago.
-- Andrew