As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FINAL APPROACH WHEN SELECTED LANDING GEAR HANDLE DOWN THE LANDING GEAR DISAGREE APPEAR FOR MORE THE 45 SECS THEN THE MESSAGE DISAPPEARED. PERFORMED GO AROUND AND LEFT GEAR HANDLE DOWN, AND LANDED WITH NO ISSUES. MTX GROUNDED AC AND PERFORMED FIM. 32-61 FT 812 MEASSAGE CLEARED AND NO FURTHER FAULTS AT THIS TIME . MTX RETURNED AC TO SERVICE .