As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF EMERGENCY LIGHTS IN CABIN, ENGINE INTAKE HEAT (BOTH LEFT AND RIGHT OPEN AND HEATER) AND PROP SYNC ADVISORY LIGHTS FLICKERED INTERMITTENTLY UNTIL EMERGENCY LIGHTS WERE SELECTED OFF. REPLACED NR 2 GCU, ADVISORY LIGHTS DIM AND TEST BOX AND F/A'S EMERGENCY LIGHT SWITCH.