As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SERVICE CHECK, MAINTENANCE FOUND THE LEFT AND RIGHT AFT EMERGENCY EXIT SIGNS NOT ILLUMINATING. TROUBLE SHOOTING PER WDM 33-51-12 AND 33-51-14 ALLOWED DISCOVERY THAT THE EMERGENCY LIGHT BATTERY PACKS B5-105 AND B5-212 HAD FAILED. BOTH BATTERY PACKS WERE REPLACED AND THE OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT IS OK FOR SERVICE. (LP 4586658)