What was found
DURING ROUTINE C-CHECK INSPECTION, AFT CARGO COMPT L-36 CRACKED 1.5 (STA 1180.000-1190.000). PERFORMED MAJOR REPAIR. REMOVED FASTENERS, REMOVED CRACKED LONGERON SEGMENT IAW DC-8 SRM 53-2-2- FIG 13 (SHEET 3, 4). FABRICATED NEW LONGERON SEGMENT P/N S2753715 EXTRUSION AL 7075 T6 511 IAW DC-8 SRM 53-4-1 FIG 44B ITEM R, DC-8 SRM 51-2-0 FIG 50 (SHEET 2B), DWG DACO 5750322 + SPLICE (AL 7075 T6 51 0.755) + DOUBLER (AL 7075 T6 0.160) IAW DC-8 SRM 53-2-2- FIG 13 (SHEET 3, 4). CLEANED, TREATED AND PRIMED AREA + 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 DC-8 SRM 53-2-2 FIG 13 (SHEET 3, 4), DC-8 SRM 51-1-20D, DC-8 SRM 51-3-1 (TORQUED).