As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON ARRIVAL TO THE GATE, L1 DOOR WILL NOT FULLY OPEN AS IT SHOULD. ACFT GROUNDED. FOUND L-1 DOOR GUIDE ARM RADIUS LINKS PIN LOCK SCREW SHEARED OFF ALLOWING PIN TO CONTACT UPPER GUIDE PLATE TRACK CAUSING DOOR TO BIND UP WHEN OPENING. REPLACED PIN, KEYWASHER AND LOCK SCREW IAW AMM 52-11-21-400-802, PARA G4. DOOR OPS CKS OK.