As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING DOOR INSPECTION OF L1 FORWARD ENTRY DOOR INSIDE HANDLE WHEN OPENING CREATES A LOUD THUD SOUND AND POP. INSIDE AND OUTSIDE HANDLES DOES NOT OPERATE SMOOTHLY. REPAIRED L1 DOOR PER AMM 52-11-00 OPERATIONS CHECK GOOD.