What was found
DURING C-CK, EXTERNAL FUS HEAT EXCHANGER CORNER WITH 03 CRACKS STA 14.000 STA 24.000 L27L. PERFORMED MAJOR REPAIR IAW FAA FORM 8110-3 NR 06018 DATE 01-17-06, SEMAN DWG NR ED 4155 DATE 01-11-06, EO SEMAN 2006040 DATE 01-17-06. REMOVED FASTENERS IAW DC-8 SRM 51-1-21. REMOVED DAMAGED AREA IAW SEMN DWG ED-4155. PERFORMED NDT INSPECT IAW DC-8 NDT IAW DC-8 NDT SPM PART 06-10-01-001. FAB`D REPAIR DOUBLER + REPAIR TRIPLER + (03 EA) FILLERS IAW SEMAN DWG ED 4155. CLEANED, TREATED AND PRIMED AREA + REPAIR PARTS IAW DC-8 SRM 51-1-8B. APPLIED SEALANT TO FAYING SURFACES IAW DC-8 SRM 51-1-11. INSTALLED REPAIR PARTS IAW SEMAN DWG ED 4155, DC-8 SRM 51-1-21, DC-8 SRM 51-1-20D, DC-8 SRM 51-3-1.