What was found
DURING ROUTINE C-CHECK INSPECTION, MAIN CARGO DOOR FRAME FORMER CRACKED 2, STA 470.000 L-21L. PERFORMED MAJOR REPAIR IAW DC8 SRM 53-2-0 FIG 1B (SHEET 3). REMOVED FASTENERS IAW DC8 SRM 51-1-20D. PERFORMED STOP HOLE. FABRICATED ANGLE DOUBLER (7075 O 0.125) IAW DC8 SRM 53-2-0 FIG 1B (SHEET 3), DC8 SRM 51-1-4 (FORMING). HEAT TREATED FROM 7075 O TO 7075 T6 IAW DC8 SRM 51-1-1 PAGES 1, 13, 17. APPLIED SEALANT TO FAYING SURFACES IAW DC-8 SRM 51-1-11. INSTALLED ANGLE DOUBLER IAW DC8 SRM 53-2-0 FIG 1B, DC8 SRM 51-1-21, DC8 SRM 51-3-0, DC-8 SRM 51-1-20D, DC-8 SRM 51-3-1 (TORQUE).