As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FLIGHT CREW REPORTED THAT AN LGCIU 1 FAULT MESSAGE OCCURRED AND REQUESTED EMERGENCY EQUIPMENT BE STANDING BY. THE AIRCRAFT LANDED SAFELY AND MAINTENANCE REPLACED THE NR 1 LANDING GEAR CONTROL INTERFACE UNIT, LGCIU, IAW AMM 32-31-71-400-001-A. A SATISFACTORY OPS CHECK WAS ACCOMPLISHED.