What was found
ORD - DURING OVERNIGHT MAINTENANCE, OVERHEAD EMERGENCY EXIT LIGHT AT ROWS 18 THROUGH 21 INOPERATIVE. REPLACED BATTERY PACK. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ORD - DURING OVERNIGHT MAINTENANCE, OVERHEAD EMERGENCY EXIT LIGHT AT ROWS 18 THROUGH 21 INOPERATIVE. REPLACED BATTERY PACK. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)