As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FINAL EICAS MSG "ENG 4 FAIL". PERFORMED FAULT ISOLATION MANUAL PROCEDURES TASK 71-00-919 DUE TO NR 4 CONTROL MESSAGE 74077, OPS CHECK GOOD PER FAULT ISO MANUAL. REMOVED AND REPLACED FMU PER B747-400 AMM 73-21-01. ACCOMPLISHED POWER PLANT TEST NR 3 PER B747-400 AMM 71-00-00, OPS CHECKED GOOD.