What was found
YVR - MAJOR REPAIR - DURING C-11 CHECK A 3/8" CRACK WAS FOUND UNDER RIVET HEAD ON STRINGER TIE CLIP BS 727D, STR 6 L/H. MAINTENANCE REMOVED DAMAGED STRINGER TIE CLIP AT BS 727D, STR 6 L/H; FABRICATED A NEW REPLACEMENT STRINGER TIE CLIP; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02, PG. 3 & 6.