What was found
MCN - MAJOR REPAIR - DURING C-12 CHECK A 1/8" CRACK WAS FOUND ON STRINGER TIE CLIP AT BS 520, STR 7 R/H. MAINTENANCE REMOVED DAMAGED STRINGER TIE CLIP AT BS 520, STR 7 R/H; FABRICATED A NEW REPLACEMENT STRINGER TIE CLIP; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02, PG. 10-11, 38, FIG. 8.