As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - MAINTENANCE FOUND THE MID AND AFT CABIN EMERGENCY EXIT LIGHTS CONTROLLED BY BATTERY CHARGER M1136 INOPERATIVE. MAINTENANCE FOUND THE BATTERY CHARGER ASSEMBLY FAILED. REMOVED AND REPLACED THE M1136 BATTERY CHARGER ASSEMBLY. SYSTEM OPERATIONAL CHECK GOOD. (M)