What was found
DURING ROUTINE C CHECK INSPECTION, EXTERNAL FUSELAGE AFT PASSENGER DOOR LEFT HAND LOWER CORNER CRACKED 2". PERFORMED MAJOR REPAIR IAW AD 2000-20-08, SB DC8 53-075, DOUGLAS DRAWING SR 08530021, S750776. REMOVED EXISTING FASTENERS IAW DC8 SRM 51-1-2L, DC-8 SRM 51-1-20D. REMOVED DAMAGED AREA IAW DOUGLAS DRAWING SR 08530021. PERFORMED NDT INSPECTION IAW DC-8 NDT SPM PART 06-10-01-001. NO CRACK, OR CORROSION FOUND. FABRICATED REPAIR DOUBLER, REPAIR TRIPLER AND FILLER IAW DOUGLAS DRAWING SR 08530021. CLEANED, TREATED, PRIMED AREA AND REPAIR PARTS IAW DC-8 SRM 51-1-8B. APPLIED SEALANT TO FAYING SURFACES IAW DC-8 SRM 51-1-11. INSTALLED REPAIR PARTS IAW DOUGLAS DRAWING SR 08530021, DC8 SRM 51-1-21, DC-8 SRM 51-1-20D, D