As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR HANDLE CANNOT MOVE. LFG WILL NOT RETRACT. L AIR/GND FAIL ON EICAS DURING CLIMB OUT. TROUBLESHOT LG WILL NOT RETRACT WITH L AIR/GND FAIL MESSAGE ON EICAS. DETERMINED LGEU TO BE AT FAULT. R&R LGEU. OPS CHECK GOOD AT THIS TIME.