What was found
EXTERIOR FUSELAGE NOSE SECTION STRUCTURAL MODIFICATION DOUBLER (ACS) CRACKED 0.750 AT AFT LWR CORNER OF RT PRIMARY HEAT EXCHANGER STA -12.000 L-27R (MAJOR REPAIR). PERFORMED MAJOR REPAIR IAW FAA FORM 8110-3 DATED 07-13-05, DWG Z20-R01 REV. IR DATED 06-24-05. REMOVED FASTENERS IAW SRM 51-1-21 PG. 1, SRM 51-1-20D PG. 21. CUT OUT DAMAGED SECTION IAW DWG Z20-R01. PERFORMED NDT INSP IAW DC8 NDT SPM PART 06-10-01-001. FABRICATED REPAIR DOUBLER REPAIR TRIPLER AND 2 EA FILLERS IAW DWG Z20-R01. CLEANED, TREATED AND PRIMED AREA AND REPAIR PARTS IAW SRM 51-1-8B. APPLIED SEALANT TO FAYING SURFACES IAW SRM 51-1-11 PG. 9. INSTALLED REPAIR PARTS IAW DWG Z20-R01, SRM 51-1-21 PG.1, SRM 51-1-20D PG. 9, SRM 51-3-0 PG.1, SRM 51-3