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 FROM INSIDE OR OUTSIDE. OPEN DOOR HANDLE, DOOR DROPS INTO THE HOLE WITH NO ROTATION, APPEARS TO BE AN ISSUE WITH UPPER GUIDE ARM. ACFT GROUNDED. FOUND L1 DOOR GUIDE ARM LOWER RADIUS LINK DISCONNECTED FROM PIVOT PIN DUE TO SHEARED KEY WASHER RETENTION SCREW. REPLACED PIVOT PIN, KEY WASHER, AND RETENTION SCREW IAW AMM 52-11-21-400-802 PARAGRAPH 3.G.(4). DOOR OPS CHECKS NORMAL.