As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2913, DURING POSTFLIGHT INSPECTION THE CREW REPORTED THE AISLE PATH AND EXIT ROW SIGN TO BE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE NUMBER FOUR EMERGENCY LIGHT POWER SUPPLY, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.