N222 is taken. It's currently assigned to a 2008 Foutz Robert V RV-9A registered in Dublin, VA.
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.
N222 has been worn before. Past registrations from FAA deregistration records:
Tails one nudge away from N222 that aren't assigned or reserved: