As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON SERVICE CHECK, MAINTENANCE FOUND THAT THE EMERGENCY EXIT LIGHTS FOR BOTH LEFT AND RIGHT FORWARD FLOOR LIGHTS ARE INOPERATIVE. MAINTENANCE FOUND THAT BATTERY PACK ASSEMBLY B5-119 HAD INTERNAL SHORT. BATTERY PACK B5-119 WAS REPLACED. THE EMERGENCY LIGHTS NOW CHECK OK REF AMM 33-51.