What was found
DURING ROUTINE C CHECK INSPECTION FOUND AFT FUSELAGE LONGERON 17 LEFT CRACKED ½ INCH AT STATION 1620.000. PERFORMED MAJOR REPAIR IAW DC8 SRM 53-5-2 FIGURE 5, SHEET 1. REMOVED CRACKED LONGERON IAW DC8 SRM 53-1-0 PAGE 1, DC8 SRM 51-1-21, DC8 SRM 51-1-20D. FABRICATED NEW LONGERON, AND SPLICES, LOCATED, DRILLED, TRIMMED CLEANED, TREATED AND PRIMED AREA, AND NEW LONGERON IAW DC8 SRM 51-1-8B. INSTALLED NEW LONGERON EXTRUSION P/N 51616757, AND SPLICES IAW DC8 SRM 53-5-2 FIG 5, SHEET 1 ITEM B, DC8 SRM 51-2-0 FIG 50, SHEET 37, DC8 SRM 51-1-21, DC8 SRM 51-3-0, DC8 SRM 51-1-20D, DC8 SRM 51-3-1.