What was found
MCN - MAJOR REPAIR - DURING C-17 CHECK .1875 INCH CRACK WAS FOUND ON SIDE ANGLE AT L-1 DOOR CUTOUT, BS 344, STR 16 LT. MAINTENANCE REMOVED CRACKED SIDE ANGLE AT L-1 DOOR CUTOUT, BS 344, STR 16 LT; FABRICATED A NEW REPLACEMENT ANGLE PER DWG 69-16970; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02 PG 10 & 11.