As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUPPORT TASK - EMER LT PWR PACK M33408 OPERATION TEST FAIL. REF NR LP 9131395. PWR PACK M33048 BATTERY REPLACED AND INSTALLATION TEST CARRIED OUT WITH NORMAL RESULT AS PER AMM 33-51-06. ADD EMP:V897810 IDT INSPECTED BY HX102640. ADD EMP:V896992