What was found
MCN - MINOR REPAIR - DURING C-18 CHECK A 1.25 INCH CRACK WAS FOUND ON LT WING LEADING EDGE BRACKET (Z-ANGLE) INSIDE PANEL 5748, WS 191. MAINTENANCE REMOVED CRACKED Z-ANGLE WS 191, UPON REMOVAL OF ANGLE FOUND LOWER SKIN CRACKED. REMOVED CRACKED SECTION OF SKIN; FABRICATED A NEW REPLACEMENT ANGLE AND NEW SECTION OF SKIN PER DWG 65C26701; INSTALLED REPAIR PARTS IAW B737-300 SRM 51-40-02, FIG 3, 6, 7, & 8, PG 1, 28, 32, 36, & 38.