As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE FROM KPBI EN ROUTE TO KFXE, CREW NOTED RED DISAGREE MESSAGE FOR RT MLG. CREW EXECUTED EMERGENCY MLG BLOW-DOWN. MLG INDICATED DOWN AND LOCKED FOR ALL THREE GEAR. UNEVENTFUL LANDING EXECUTED AT KFXE. SUBSEQUENT INVESTIGATION FOUND LOOSE TARGET FOR PROXIMITY SENSOR. TARGET RETIGHTENED AND OPERATIONAL CHECKS FOUND TO BE NORMAL.