As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AFTER TAKEOFF GEAR DOOR RETRACTION ECAM LANDING GEAR DOORS NOT CLOSED MESSAGE WITH RED UNLOCK ON NOSE WHEEL. MESSAGE WENT AWAY AFTER 20 SECONDS. MAINTENANCE REPLACED THE NOSE LANDING GEAR DOOR ACTUATOR PER AMM 32-31-16.. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.