What was found
LT PRIMARY HEAT EXCHANGER AFT LWR CORNER CRACKED 3/7 INCH STA-12.000 L-27L TO 28L. PERFORMED MAJOR REPAIR IAW FAA FORM 8110-3 NR 09181 DATED 04-29-09 EVD DB53-00256 REV IR DATED 04-21-09 SEMAN DWG NR ED-4933 DATED 04-13-09. REMOVED FASTENERS IAW SRM 51-1-21 SRM 51-3-0. CUT OUT DAMAGE SECTION IAW SERMAN DWG NR ED-4933. PERFORMED NDT INAP IAW NDT SRM PART 06-10-01-001 NEITHER CRACK MINOR CORROSION FOUND ENCLOSED SMN FORM 242-2. FABRICATED REPAIR DOUBLER (AL2024 T3 0.050") PLUS REPAIR TRIPLER (AL2024T3 0.063) PLUS FILLER (AL2024 T3 0.100") IAW SEMAN DWG ED-4933 CLEANED, TREATED AND PRIMED AREA, REPAIR PARTS IAW SRM 51-1-8B. INSTALLED REPAIR PARTS IAW SEMAN DWG ED-4933, SRM 51-1-11, SRM 51-1-21, SRM 51-3-20D REFER TO NR 238627 FRO REWORK.