As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 4370 - CREW REPORTED THAT DURING POST FLIGHT CHECK, THE EMERGENCY LIGHTS ON INSIDE OF SERVICE DOOR WERE FOUND TO BE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE NR 2 BATTERY POWER SUPPLY AND BATTERY CHARGER. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)