What was found
MDC FRAME 48, Y 0 TO -Y450, HAS CRACKED ON INTERCOSTAL. REMOVED INTERCOSTAL AT FRAME 48, BETWEEN 0 TO -Y450 IAW SRM 51-40-21. FABRICATED NEW INTERCOSTAL ON T15 1171512. INSTALLED NEW INTERCOSTAL AT FRAME 48, BETWEEN 0 TO -Y450 IAW SRM 51-40-21, MAJOR REPAIR.