What was found
DURING ROUTINE C-CHECK INSP FOUND AFT FUSELAGE INTERNAL SECTION RING ANGLE CRACKED AT STA FS 1690.000 LONGERON 30, LT LONGERON 36. REMOVED CRACKED RING ANGLE. FABRICATED SPLICES. PERFORMED HEAT TREATMENT. CLEANED, TREATED, PRIMED AREA AND REPAIR PARTS. INSTALLED REPAIR PARTS IAW SRM CHAPTER 53-2-5 FIGURE 8C-1 SHEET 2, SRM 51-3-0, SRM 51-1-21, SRM 51-1-8B, SRM 53-2-5, SRM 51-1-1 PAGES 1, 13, 17, AND SRM 51-3-1.