As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED THAT THE DOOR 1L WILL NOT ARM. MAINTENANCE FOUND THE L1 DOOR GIRT BAR LANYARD / MOORING LINE ON AFT SIDE INCORRECTLY ROUTED AND FALLING INTO THE LOCKING LUG. MAINTENANCE CORRECTLY ROUTED THE LANYARD / MOORING LINE PER AMM 25-62-44 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK OF THE DOOR ARMING SYSTEM WITH NO ISSUES NOTED.