As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND DOOR 5 OFAR EMERGENCY LIGHT BATTERY PACK (M33143) LOW CAPA CITY (LESS THAN 15 MINUTES) REF TO HAECO NON-ROUTINE NO.9451994, ORIGINATED BY EMP V905400, SPEC NO.B777-33-3-7019. PERFORMED BY EMP V905393 AND IDT BY EMP V907748 - REPLACED THE B ATTERY PACK M33143. PERFORMED THE TEST OF THE BATTERY. THE RESUL T WAS NORMAL IAW AMM 33-51-06-960-802 REV 97.