As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THE MAIN CABIN DOOR WAS DIFFICULT TO OPEN AND CLOSE. THE ACFT WAS REMOVED FROM SERVICE. LUBRICATED MAIN PAX DOOR LOCKING AND UNLOCKING MECHANISM IAW AMM 52-18-00. THE OPS CHECK WAS GOOD. THE ACFT WAS RETURNED TO SERVICE.