As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON SERVICE CHECK, MAINTENANCE FOUND THAT THE EMERGENCY LIGHT AT DOORS 1R AND 1L WERE INOPERATIVE. AFTER TROUBLESHOOTING PER FIM 35-50-00, THE BATTERY B5-118 WAS FOUND TO HAVE FAILED. THE BATTERY WAS REPLACED PER AMM 33-51-03. OPERATIONAL CHECK WAS GOOD. (LP 5199717)