As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 4 PYLON INNER VERT WEB O/B SIDE SKIN WORN THROUGH GREATER THAN 50% OF THICKNESS ALONG THE ENTIRE LENGTH DUE TO CONTACT WITH THE CORE COWL. FABRICATED REPAIR DOUBLER FROM .125 2025-T3, DRILLED AND COUNTERSUNK PER B747 SRM 54-30-03 FIG 35 AND 36. INSTALLED FABRICATED DOUBLER, HI LOCKS AND RIVETS PER SRM 54-30-03.