As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WEAR DAMAGE FOUND ON THE I/B FLANGES OF BOTH THE NR 1 AND NR 2 PYLON AFT ENGINE MOUNT BULKHEADS. THIS DAMAGE IN CONJUNCTION WITH MULTIPLE NUT PLATE ATTACH RIVETS ON THE NR 1 PYLON GSE ATTACH HOLE REQURED THE HOLE TO BE ENLARGED TO INCORPORATE NEAREST ATTACH RIVET LOCATIONS. THE NR 2 PYLON AFT ENGINE MOUNT BULKHEAD WAS WORK IN THE LOCATIONS SHOWN IN FIGURE 2. 334780-14.