Cessna 305A (O-1A) registrations

2 Cessna 305A (O-1A) aircraft on the FAA register (FAA model 305A (O-1A)), newest first.

N-numberYearAircraftBased
N6620N—Cessna 305A (O-1A)Wilmington, DE
N87971—Cessna 305A (O-1A)Bonners Ferry, ID

Source: FAA Aircraft Registry, October 2026. Each N-number links to its aircraft page with registration record, history and accident data.