What was found
DURING C-18 CHECK, A 1/2 INCH CRACK WAS FOUND IN ANGLE AT LOWER FORWARD CORNER OF L-1 DOOR BS 315, STR 16 LT. MAINTENANCE REMOVED CRACKED ANGLE AT LOWER FORWARD CORNER OF L-1 DOOR BS 315, STR 16 LT; FABRICATED A NEW REPLACEMENT ANGLE PER DWG 65-49649; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02, FIG. 3, 4, AND 8.