As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION, FOUND THE MAIN CABIN DOOR DIFFICULT TO OPEN FROM INSIDE AT LGA ARRIVAL. THE AIRCRAFT WAS REMOVED FROM SERVICE. LUBRICATED ROLLERS ON MAIN CABIN DOOR IAW AE CRJ STANDARD MAINTENANCE PRACTICES. THE AIRCRAFT WAS RETURNED TO SERVICE.