Search LADD: N644EM
N644EM 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
N644EM is also on the LADD Source block list as of last check on 2023-01-09
Aircraft Info: N644EM
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ICAO: a87487
ICAO Type: MU2
Manufacturer: MITSUBISHI
Model: MU-2B-60
Year: 1980
Owner: AIR 1ST AVIATION COMPANIES OF OKLAHOMA INC
Military: False