What was found
FUSELAGE EXTERIOR PRIMARY HEAT EXCHANGER AFT UPPER CORNER ACS MODIFICATION DOUBLER 0.375" CRACK STA -12.000 L-24L (MAJOR REPAIR). PERFORMED MAJOR REPAIR IAW FAA FORM 8110-3 DATED 08-13-07, ASTAR EVA D853-00007 DATED 07-10-07, ASTAR DWG ES D853-00007-001 DATED 08-06-07. REMOVED FASTENERS IAW SRM 51-1-21. CUT OUT DAMAGED SECTION AND FABRICATED (2EA) REPAIR FILLERS (AL2024T3 0.100") AND REPAIR DOUBLER (AL2024T3 0.050") AND REPAIR TRIPLER (AL2024T3 0.063") IAW EVA D853-0007, ASTAR DWG ES D853-00007-001. PERFORMED NDT INSPECTION IAW DC8 NDT SPM PART 08-00-02 TO 07. ENCLOSED SMN FORM 242-4. CLEANED, TREATED AND PRIMED AREA AND REPAIR PARTS IAW SRM 51-1-8B. INSTALLED REPAIR PARTS IAW EVA D853-0007, ASTAR DWG ES