As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANT REPORTED THAT FWD ENTRY DOOR WAS VERY DIFFICULT TO OPEN ON ARRIVAL AND HEARD AND FELT PRESSURE SURGE WHEN DOOR FINALLY OPENED. ACCOMPLISHED FIM 52-10-00-810-807. ENTRY DOOR CANNOT BE OPENED OR CLOSED EASILY. LUBRICATED FORWARD ENTRY DOOR IAW AMM 12-25-11 OPS CKS GOOD. OK FOR SERVICE. THE AIRCRAFT WAS GROUNDED.