What was found
DURING ROUTINE C CHECK INSPECTION, FOUND AFT FUSELAGE LONGERON CRACKED AT STATION 1786.000 LONGERON 17 RIGHT. REMOVED CRACKED LONGERON. CLEANED, TREATED, AND PRIMED AREA. FABRICATED EXTRUSION LONGERON. INSTALLED REPAIR PART IAW DC8 SRM 53-5-3 FIGURE 5 SHEET 1 ITEM "B", DC8 SRM 53-1-0 PAGE 1, SRM 51-1-20D, SRM 51-1-21, DC8 SRM 51-1-8B, SRM 51-2-0 FIGURE 50 SHEET 37, SRM 51-1-11, AND SRM 51-3-1.