What was found
RT PRIMARY HEAT EXCHANGER FWD LWR CORNER REPAIR DOUBLER 0.250" CRACKED, STA -32.000 L-27R (MAJOR REPAIR). PERFORMED MAJOR REPAIR IAW FAA FORM 8110-3 DATED 01-30-07, DWG NR AC62-53-103 REV IR DATED 01-17-07. REMOVED FASTENERS IAW SRM 51-1-21. CUT OUT DAMAGED SECTION IAW DWG NR AC62-53-103. PERFORMED NDT INSPECTION IAW DC8 NDT SPM PART 06-10-01-001. NO CRACK OR CORROSION FOUND AFTER CUT OUT. ENCLOSED SMN FORM 242-2. FABRICATED REPAIR DOUBLER (AL2024T3 0.050") REPAIR TRIPLER (AL2024T3 0.063") AND FILLER (AL2024T3 0.100") IAW DWG NR AC62-53-103. CLEANED, TREATED AND PRIMED AREA AND REPAIR PARTS IAW SRM 51-1-8B. APPLIED SEALANT TO FAYING SURFACES IAW SRM 51-1-11. INSTALLED REPAIR PARTS IAW DWG NR AC62-53-1