What was found
IAH - FLIGHT 2873, THE CREW REPORTED A LANDING GEAR AIR/GRND FAIL EICAS MESSAGE AFTER TAKEOFF, AND THE GEAR HANDLE WOULD NOT MOVE. THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED AITHOUT INCIDENT. MAINTENANCE ADJUSTED THE RIGHT MAIN LANDING GEAR WEIGHT ON WHEELS PROXIMITY SENSOR, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.