What was found
RT PRIMARY HEAT EXCHANGER AFT LWR CORNER MODIFICATION DOUBLER (ACS) CRACK 0.75", STA -12.000 L-27R. PERFORMED MAJOR REPAIR IAW FAA FORM 8110-3 DATED 04-03-06, DWG A807-53-110 REV IR DATED 03/21/06. REMOVED FASTENERS IAW SRM 51-1-21, SRM 51-3-0. CUT OUT DAMAGED AREA AND FABRICATED REPAIR DOUBLER (AL2024T3 0.063") AND FILLER (AL2024T3 0.100") IAW DWG NR AB07-53-110. 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 AB07-53-110, SRM 51-1-21, SRM 51-3-0, SRM 51-1-20D, SRM 51-3-1.