What was found
IAH - FLIGHT 2271 - THE CREW REPORTED, RECEIVED A LANDING GEAR AIR GROUND FAILED EICAS MESSAGE WHEN THE GEAR WAS SELECTED DOWN, AND CLEARED WHEN GEAR EXTENDS. THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE LANDING GEAR ELECTRONIC UNIT (LGEU), OPERATIONALLY CHECKED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.