As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AVIONICS LIGHT/CHIME CAME ON PASSING 10000 EXECUTED TURNBACK TO KSMP. BURN TO MAX LNDG WEIGHT. FOUND AVIONICS DOOR FLUSH TO FUSELAGE AND DOOR LATCH APPROX 1/8 INCH DOWN. ON INSPECTION FOUND DOOR LOCKED SWITCH WITH BROKEN SAFETY WIRE. RETIGHTENED SWITCH. OPS NORMAL PER A300 MM REF 52-41-14-5 DOOR VERIFIED CLOSED ON DEPARTURE WITH NO LIGHT.