As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3202 DURING DESCENT THE GEAR EXTENSION LANDING GEAR AIR/GROUND FAIL MESSAGE ON EICAS CAME ON THEN WENT OUT AFTER THE GEAR INDICATED DOWN. THE CAPTAIN DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPALCED THE LANDING GEAR ELECTRONIC UNIT IAW MM 32-32-01. 01. THE OPERATIONAL CHECK WAS GOOD. ALSO PERFORMED OPERATIONAL TEST OF THE PROXIMITY SWITCHES IAW MM 32-63-05 NO DEFECTS NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE.