As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT - MAINTENANCE FOUND THE AFT LEFT EXTERIOR EMERGENCY LIGHT, THE EXIT LIGHT ABOVE AFT RIGHT SERVICE DOOR AND THE AFT LEFT CENTER AISLE LIGHTS INOP. MAINTENANCE REMOVED AND REPLACED THE BATTERY PACK (P/N AD20131A) WITH NO HELP. FOUND BATTERY CHARGER INOP. REPLACED SAME. OPERATIONAL CHECK NORMAL. (M)