As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE EMERGENCY LIGHTS ON SEATS AT ROWS 15-20 WOULD NOT ILLUMINATED WHEN TESTED. TROUBLESHOOTING FOUND M1672 AND M1670 BATTERY CHARGERS FAILED. THE BATTERY CHARGERS WERE REMOVED AND REPLACED IAW MM 33-51-06 AND OPERATION OF THE LIGHTS TESTED GOOD.