What was found
MCN - MAJOR REPAIR - DURING C-18 CHECK A 1/4" CRACK WAS FOUND ON THE FORWARD UPPER SIDE OF THE L/H HORIZONTAL STABILIZER ATTACH BRACKET, BS 1156. MAINTENANCE REMOVED THE DAMAGED L/H HORIZONTAL STABILIZER ATTACH BRACKET AT BS 1156; FABRICATED A NEW REPLACEMENT ATTACH BRACKET; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02, PG. 10-11, 42, FIG. 12.