What was found
MCN - MAJOR REPAIR - DURING C-16 CHECK A 3/8" CRACK WAS FOUND ON STRINGER TIE CLIP AT BS 639, STR 1 L/H. MAINTENANCE REMOVED CRACKED STRINGER TIE CLIP AT BS 639, STR 1 L/H; FABRICATED A NEW REPLACEMENT STRINGER TIE CLIP; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02, FIG. 8, PG. 38, AND SRM 51-40-05, PG. 1-4, FIG. 1 & 2, AND PG. 7, FIG. 4.