What was found
MCN - MAJOR REPAIR - DURING C-16 CHECK A 1/4" CRACK WAS FOUND ON STRINGER TIE CLIP AT STR 4 L/H, BS 639. MAINTENANCE REMOVED DAMAGED STRINGER TIE CLIP AT STR 4 L/H, BS 639; FABRICATED A NEW REPLACEMENT STRINGER TIE CLIP; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02, PG. 38, FIG. 8, AND SRM 51-40-05, PG. 1-4, FIG. 1-2, PG. 7, FIG. 4.