What was found
DURING ROUTINE C-CHECK INSPECTION, EXTERNAL FUSE HEAT EXCHANGER CORNER CRACKED STA 14.000 L27R. PERFORMED MAJOR REPAIR. REMOVED FASTENERS IAW DC-8 SRM 51-1-21. REMOVED DAMAGED AREA IAW SEMAN DWG ED-4156. PERFORMED NDT INSPECTION IAW DC-8 NDT IAW DC-8 NDT SPM PART 06-10-01-001. FABRICATED REPAIR DOUBLER (ALCLAD 2024 T3 0.050) & REPAIR TRIPLER (ALCLAD 2024 T3 0.063) & FILLER (ALCLAD 2024 T3 0.100) IAW SEMAN DWG ED 4156. 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 4156, DC-8 SRM 51-1-20D, DC-8 SRM 51-3-1 (TORQUE).