As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3301 THE CREW REPORTED THE OVERWING EMERGENCY CEILING LIGHT STRIP (AFT) (ROW 12) INOPERABLE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE EMERGENCY LIGHT INVERTER NR 4, THE OPERATIONAL CHECK OF THE EMERGENCY LIGHTS WERE GOOD IAW EMB AMM 33-50-11. THE AIRCRAFT WAS RETURNED TO SERVICE.