As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION, FOUND THE LEFT AND RIGHT OVERWING EMERGENCY LIGHTS INOPERATIVE. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED NR 4 EMERGENCY BATTERY SUPPLY AND BATTERY HOLDER ASSEMBLY IAW AMM 33-50-04. OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.