As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FA REPORTS THAT L1 DOOR IS DIFFICULT TO OPEN. GROUNDED - YES. CYCLED L1 DOOR SEVERAL TIMES INCLUDING WITH ASSISTANCE OF ANOTHER FA. NO DIFFICULTIES OPERATING L1 DOOR NOTED. VISUAL INSPECTION REVEALS NO DEFECTS TO L1 DOOR. REF B737-9 AMM 52-11-00. ALL OPS NORMAL. NO 30-DAY HISTORY.