As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:ASV NR 4 ENGINE PYLON CRACKED ON I/B SIDE. CRACK IN NR 4 ENG PYLON INBD SIDE AFT OF SLOT SEAL COMING FROM TOP SIDE OF PREVIOUS DOUBLER. REMOVED EXISTING DOUBLER FROM A/C 75705 03/04/03, REPAIRED PER EO B747-5430-18401-A. NEW DOUBLER REPAIR INSTALLED.