At a towered airport without radar, you are still IFR until your wheels
touch the ground (assuming you don't cancel on your own).

If your wheels touch the ground on a Cat IIIc missed approach though,
you ought to still be IFR. That would be one pretty pickle.

Jose
--
"There are 3 secrets to the perfect landing. Unfortunately, nobody knows
what they are." - (mike).
for Email, make the obvious change in the address.