As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR 4L KNUCKLE KNOCKER NOT COMING OUT AND SLIDE ARMED LIGHT NOT ILLUMINATING FOUND DOOR ARMING PROPERLY BUT MICROSWITCH THAT SENSES SIGNAL TO ARM LIGHT WAS CAKED IN DIRT AND GRIME. CLEANED MICRO SWITCH SENSOR AND OPS CHECK GOOD AT THIS TIME REF AMM TASK 25-66-01