As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PS-2 INSPECTION FOUND THE LEFT AND RIGHT EXTERIOR AFT EMERGENCY LIGHT NOT ILLUMINATING. THE AIRCRAFT WAS REMOVED FROM SERVICE. TROUBLESHOT AND FOUND THE LEFT OVERWING LIGHT HAS A SHORT BLOWING FUSION POWER SUPPLY. REMOVED AND REPLACED THE LEFT OVER WING LIGHT IAW AMM 33-700-19. REMOVED AND REPLACED THE NR 4 POWER SUPPLY AND BATTERY. THE OPERATIONAL CHECK WAS GOOD IAW WC 33-700-7. THE AIRCRAFT WAS RETURNED TO SERVICE.