As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REF NR LP 9132191- B777-33-3-0018 DOOR R4 EMER LIGHT POWER SUPPLY M33408 BATTERY PACK TEST FAIL. DOOR R4 EMERG LIGHT POWER SUPPLY M33408 BATTERY PACK REPLACED AND OPERATIONAL TESTED NORMAL PER AMM 33-51-06. DETAIL REFER ATTACH FORM 44-0008 ITEM 1 AND ITEM 2 FOR ACCOMPLISHED.