In article ,
Jose wrote:

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

If you're flying a Cat IIIc approach, the tower probably can't see you,
your wheels, or the runway, so it works out.