As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
B777-33-3-7023 AN OPERATIONAL CHECK OF THE BACKUP LIGHTINH COMPONENTS IN LLAR FOUND NO BACKUP LIGHT COME ON. TRANSFER REF. NON ROUTINE HX WO 585248 AND ORIGINATED BY EMP V896965 LLAR EMERGENCY BATTERY PACK REPLACED AS PER AMM 33-51-06 AND TEST NORMAL WORK ACCOMPLISHED BY MECHANIC V926993 INSPECTED BY V896992