As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AMBER AIRSTAIR ANNUNCIATOR ILLUMINATED INFLIGHT. VISUAL INSPECTION FROM AFT ENTRY REVEALED DAYLIGHT FROM RIGHT AFT STAIR. DIVERTED TO ORD AND DUMPED FUEL. UPON ARRIVAL FOUND AIRSTAIR IN UP AND LOCKED POSITION. CHECKED OPERATIONS OF AIRSTAIRS PER MM. INSPECTED DOOR ROLLERS, LOCKS AND SWITCHES. ALL CHECKS NORMAL WITH STAIR IN UP AND LOCKED POSITION. NO DAYLIGHT VISIBLE. AIRCRAFT OK FOR SERVICE.