As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND EMERGENCY LIGHT INOP. CARRIED OUT WIRING CHECK PER B777 FIM 33-51-00-2 REV 108.0 & WDM 33-51-13 REV 72.0 FOUND SATISFACTORY. REMOVED AND REPLACED LH & RH BATTERY PACK AND CARRIED OUT INSTALLATION TEST PER B777 FIM 33-51-00-2 REV 108.0 & B777 AMM 33-51-06-2 REV 108.0 FOUND SATISFACTORY. THIS IS A MINOR REPAIR PER GMM 6-2-100.