As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
B777-33-3-7019 - CABIN DR L4 OVERDOOR EXIT SIGN CAPACITY CHK FAIL. WORK TRANSFER NON ROUTINE WO.3551458 AND ORIGINATED BY EMP V920592. CABIN DR L4 EMER LT BATTERY PACK M33407 REPLACED AND AND ELB 8915128 WITH IDT REF CLEARED ELB 8914774. INSTALLATION TEST CARRIED OUT WITH NORMAL RESULT AS PER AMM 33-51-06.