Search LADD: N4520N
N4520N is on the LADD list. So it is 'blocked'

Any site that uses FAA data is required to block this aircraft, ie. FlightRadar24, FlightAware. You can still track it on TheAirTraffic.com though.
Seen on LADD before we began logging dates.Last Seen on LADD: 2025-05-13
N4520N is also on the LADD Source block list as of last check on 2023-01-09
Aircraft Info: N4520N
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ICAO: a57bef
ICAO Type: AA5
Manufacturer: GULFSTREAM AMERICAN CORP
Model: AA-5B
Year: 1979
Owner: HURLEY PETER
Military: False