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 TECH TELEMETRY DATA INDICATED NLG SLOW TO RETRACT AND LEFT HYD SYS PRESSURE DROP DURING RETACTION. REQUEST TO DEFER PER MEL 32-30-1. DMP ACCOMPLISHED