As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 2776, CREW REPORTED THE MAIN CABIN DOOR WAS DIFFICULT TO PUSH OPEN. THE AIRCRAFT WAS REMOVED FROM SERVICE. CLEANED MAIN CABIN DOOR LOCK AS PER STANDARD PRACTICE. NO PARTS REMOVED OR REPLACED. THE OPERATIONAL CHECK WAS GOOD AS PER EMB 140 AMM 52-18-02. THE AIRCRAFT WAS RETURNED TO SERVICE.