N94KF is taken. It's currently assigned to a 2003 Fawvor Kim KIM 2000 GTX registered in Sturgis, OK.
See the full aircraft record →A tail number only frees up if the owner deregisters the aircraft or moves it to a different N-number — and even then the FAA holds it before releasing it to the public.
N94KF has been worn before. Past registrations from FAA deregistration records:
Tails one nudge away from N94KF that aren't assigned or reserved: