As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 2865 THE CREW REPORTED THAT THE MAIN CABIN DOOR REQUIRES EXCESSIVE FORCE TO OPEN. THE AIRCRAFT WAS REMOVED FROM SERVICE. LUBRICATED THE MAIN CABIN DOOR LOCKING MECHANISM, THE OPERATIONAL CHECK WAS GOOD IAW AMM 52-18-00. NO PARTS REMOVED OR REPLACED. THE AIRCRAFT WAS RETURNED TO SERVICE.