As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE-OFF DURING GEAR RETRACTION GEAR DISAGREE EICAS APPEARED FOR APROXIMATELY 3 SECONDS THEN EXTINGUISHED VERIFIED INSTALL/ TORQUE OF THE NOSE LANDING GEAR RETRACT ACTUATOR IAW AMM 32-34-01. OPS CHECK AND CLEARANCE CHECKS GOOD AT THIS TIME. ALSO WITNESSED ALTERNATE GEAR EXTENSION IAW AMM 32-35-00. ALL CHECKS GOOD.