As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3239 THE CREW REPORTED THE MAIN CABIN DOOR WAS HARD TO OPEN AND CLOSE. THE AIRCRAFT WAS REMOVED FROM SERVICE. LUBRICATED ROLLERS ON MAIN CABIN DOOR. THE OPERATIONAL CHECK WAS GOOD AMM 52-18-00. THE AIRCRAFT WAS RETURNED TO SERVICE.