As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTING SYS BATTERY CHARGER ASSEMBLIES FOR BATTERY NR 3 & BATTERY NR 4 ARE INOPERATIVE. R & R EMERGENCY LIGHTING SYS BATTERY POWER SUPPLIES & BATTERY PACKS FOR BATTERIES NR 3 & NR 4 IAW AMM 33-50-04, OPERATIONS CHECKED GOOD.