As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN DOOR ABNORMALLY DIFFICULT TO OPEN EXTERNALLY. HANDLE STICKS AND HAS TO BE PULLED HARD. REMOVED FROM SERVICE. OPERATED DOOR MULTIPLE TIMES DOOR IS IN SERVICEABLE CONDITION. COULD NOT DUPLICATE PROBLEM. NO FURTHER DEFECTS NOTED. RETURNED TO SERVICE. NO PARTS REPLACED.