As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE CPCP CHECK INSPECTION, FOUND KEEL BEAM RT W/W UNDER APU ANGLE CORRODED TOP AND BOTTOM. OUT OF LIMITS PER SRM 53-10-1. REPAIRED PER SRM 51-40-4 PN=7075-T6 OR 2X2X.150. CORROSION TASK CARD NUMBER C53-132-01. NON-ROUTINE TASK CARD NUMBER 108224.