What was found
MULTIPLE EMERGENCY LIGHTS NOT WORKING. REPLACED ALL FOUR BATTERY SUPPLY PACKS & REPLACED NR 1 & NR 3 BATTERY CHARGER, PN AD-2013-1A, SN ON 64830, SN OFF 99705, SN ON 68386, SN OFF 107279, SN ON 77156, SN OFF 67887, SN ON 105763 & SN OFF 72165.