As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR 4R SLIDE ARMED LIGHT INOP. ANOMALIE WAS CAUSED BY DIRT OR DEBRIS ON PROXIMITY SENSORS WHICH AFFECTED THE POSITION AND THEREFORE INDUCTANCE NECESSARY FOR SYSTEM OPERATION. CORRECTIVE ACTION CONSISTED OF CLEANING AND ADJUSTMENT OF THE GIRT BAR PROXIMITY SWITCHES/SENSORS.