As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION, FOUND EMERGENCY EXTERIOR OVERWING AFT LIGHT ON BOTH SIDE ARE OUT. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND INSTALLED NR 4 BATTERY POWER CHARGER IAW AMM 33-50-04. OPS CHECKED GOOD. AIRCRAFT RETURN TO SERVICE.