What was found
THE AIRCRAFT RETURNED TO THE FIELD FOR A LANDING GEAR AIR/GROUND FAIL MESSAGE ON THE EICAS. MAINTENANCE REPLACED THE LANDING GEAR ECU AND THE NOSE DOOR PROX SWITCH.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
THE AIRCRAFT RETURNED TO THE FIELD FOR A LANDING GEAR AIR/GROUND FAIL MESSAGE ON THE EICAS. MAINTENANCE REPLACED THE LANDING GEAR ECU AND THE NOSE DOOR PROX SWITCH.