As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
B777-33-3-7019 B2 INT: DOOR 4 RIGHT (M33401) EMERGENCY LIGHT BAT TERY FAILED OPERATIONAL AND BITE TEST. P/N OFF: D717-01-100 S/N OFF: 155992 REPLACED DOOR 4 RIGHT EMERGENCY LIGHT BATTERY PACK M33401 AND IN WORK ACCOMPLISHED BY V943538 STALLATION TEST PASSED AS PER AMM 33-51-06. P/N ON: D717-01-100 S/N ON: 510402