What was found
DURING ROUTINE C CHECK INSPECTION, AFT FUSELAGE FOUND A CRACK AT LONGERON 17 LEFT AT STATION 1769.000. REMOVED CRACKED LONGERON. FABRICATED NEW LONGERON. CLEANED, TREATED AND PRIMED AREA AND NEW LONGERON. INSTALLED NEW LONGERON IAW DC8 SRM 51-1-11, 51-1-21, 51-1-20D, 51-3-1, DC8 SRM 53-5-3 FIGURE 5 SHEET 1, DC8 SRM 53-1-0 PAGE 1,SRM 51-1-21 AND 51-1-20D, DC8 SRM 53-5-3 FIGURE 5 SHEET 1 ITEM "B", AND DC8 SRM 51-1-8B.