As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF WHEN GEAR WAS SELECTED UP, RECEIVED MASTER WARNING GEAR DISAGREE, AND NOSE DOOR WARNING, RAN QRH SELECTED GEAR DOWN AND GEAR INDICATED NORMALLY. REMOVED AND REPLACED NLG SELECTOR VALVE IAW 32-33-10. REMOVED AND REPLACED NLG PRIORITY VALVE IAW 32-33-15. REMOVED AND REPLACED MLG PRIORITY VALVE IAW 32-32-15. OPERATIONS CHECK OF LANDING GEAR EXTENSION AND RETRACTION SYSTEM GOOD IAW 32-30-00. COMPLETED PA 05-018 REV J SCENARIO 1 PER MOTR GROUP.