As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STL - DURING MAINTENANCE INSPECTION, AN EMERGENCY EXIT SIGN WAS FOUND TO BE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE NUMBER FIVE EMERGENCY LIGHT INVERTER, OPERATIONALLY CHECKED WITH NO DEFECTS, AND APPROVED THE AIRCRAFT FOR RETURN TO SERVICE.