Enter a US tail number to pull its FAA registration, make and model, manufacturer serial number, engine, and registration status, assembled from public government data and keyed to the permanent airframe serial.
Check whether an N-number is available to reserve — and if it's taken or reserved, see exactly when it frees up.
Check N-number availability →A tail number can be changed; the manufacturer serial number is permanent, like a VIN for an airplane. Every lookup here resolves to the serial, so an aircraft's history stays attached to the airframe even if the registration changes.