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 HEAVY CORROSION LT HEAT EXCHANGER PLENEM TOP PLATE AFT END REPAIR PREVIOUSLY ACCOMPLISHED IS CORRODED. ALSO, REPAIRED DAMAGE AREA IAW BOEING REPORT KHC-ORD-97-0003RR DATED 9-JUL-97, APPROVED BY FAA FORM 8110-3 DATED 7-22-97 PN=2024-T3 .080IN. CORROSION TASK CARD NUMBER C53-132-01. NON-ROUTINE TASK CARD NUMBER 107781.