N65B is taken. It's currently assigned to a 1963 Sikorsky S-58JT registered in Winder, GA.
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.
N65B has been worn before. Past registrations from FAA deregistration records: