As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LLAR BACK-UP LIGHT BATTERY PACK M023 LOW VOLTAGE RERER HAECO NON -ROUTINE NO.9472107,ORIGINATED BY EMP:V905336,SPEC NO.B777-33-3- 7024. PERFORMED BY EMP:V905495,REPLACED LLAR BACK-UP LIGHT M023 BATTER Y AS PER AMM 33-51-06-960-802 REV.93 TEST RESULT NORMAL.IDT BY E MP:V905389.