As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L1 DOOR WILL NOT OPEN. ACFT GROUNDED. INSPECTED & FOUND LOWER RADIUS LINK SCREW BROKEN OFF & HOLD OPEN MECHANISM SPRING BROKEN FROM THE GUIDE ARM. REMOVED AND REPLACED UPPER & LOWER RADIUS LINK PIN & SCREW. REPLACED SPRING HOLD OPEN MECHANISM PER B737-800 AMM 52-11-21. TEST FWD ENTRY DOOR OPERATES EASY AND SMOOTHLY.