As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4816 - CREW REPORTED GEAR WOULD NOT RETRACT FOLLOWED BY AN AIR/GRND FAIL EICAS MESSAGE. AFTER LDG 1-2 WOW MESSAGE ON EICAS. NO EMERGENCY DECLARED AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED LGEU PER CMC FINDINGS. GEAR SWINGS GOOD WITH NO FAULTS NOTED. AIRCRAFT RETURNED TO SERVICE. (A)