As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3321 THE CREW REPORTED THEY COULD NOT OPEN THE LANDING GEAR EMERGENCY HATCH. THE AIRCRAFT WAS REMOVED FROM SERVICE. LUBRICATED EMERGENCY LANDING GEAR HATCH DOOR AS REQ PER STANDARD PRACTICE. THE AIRCRAFT WAS RETURNED TO SERVICE.