What was found
IAH - FLIGHT 2017, THE CREW REPORTED THAT ONCE THE LANDING GEAR WAS LOWERED, RECEIVED AN EICAS CAUTION MESSAGE LANDING GEAR AIR/GRND FAIL, AND IT REMAINED WHEN ON THE GROUND. MAINTENANCE INSPECTED THE AIRCRAFT AND ADJUSTED THE WOW TARGET ON THE LT MAIN LANDING GEAR TRAILING ARM, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.