As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED SEVERAL EMERGENCY EXIT LIGHTS FLASH INTERMITTENTLY WHILE EN ROUTE. TESTED NORMAL ON GROUND. MAINTENANCE FOUND EMERGENCY LIGHT BATTERY PACK M1179 BAD. REMOVED AND REPLACED PACK AND BATTERY PER MM 33-51-51-962. SYSTEM OPS CHECK GOOD. TAXIED AIRCRAFT AND SHOOK WIRE RUN FROM BATTERY PACK M1179 TO OVERHEAD OF ROW 25. UNABLE TO DUPLICATE PROBLEM. AIRCRAFT OK FOR SERVICE.