As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR PAX CAS ILLUMINATED THREE TIMES IN FLIGHT. FIRST FOR ABOUT 20 SECONDS EXTINGUISHED BEFORE LEVELING OFF AND BEING ABLE TO ACCOMPLISH QRH. ILLUMINATED 2 MORE TIMES FOR ABOUT 5 SECONDS. NO ILLUMINATION BELOW 15,000 FEET. CORRECTIVE ACTION: REPAIRED WIRE. OPS CHECK GOOD. IAW EMB50 SWPM 20-41-20