is extensive enough, it may be advisable to patch the  complete crossport area and then re-cut the crossport  in its original shape with a hot knife. 2.  Pin the rib to the pin board. 3.  Mark out the damaged area as you would a standard  patch. Lay the patch material in place and pin. 4.  Sew the patch in place with a seam  1 ⁄ 16 inch from  the edge. 5.  Turn the patch over, fold the seam, and sew as a  standard patch.  [Figure B] •  Make sure that there are no twists in the lines. •  Check that the steering toggles (if used) are tied  on securely. •  Applicable products: Square main canopies with  crossports •  Description: Repair of damaged crossports in square  main canopies •  Authorized repairmen: FAA Senior or Master  Parachute Rigger  •  Materials: E thread—color to match; fabric—type and  color to match •  Machines: 301 straight stitch—medium duty 7–11 SPI •  Equipment: Scissors, seam ripper or scalpel, marking  pencil, 6-inch ruler, pin board, straight pins, patching  triangle, and hot knife Square Canopy—Crossport Repair Procedure There is no limit as to how many crossports may be repaired  on a main canopy. Reserve canopies are another matter.  The number and authority to repair crossports on a reserve  varies between manufacturers. Before attempting to repair  the crossports of a reserve, first check with the manufacturer. 6.  Lay the repaired rib on a suitable surface and re-cut  the crossport shape in the exposed edge of the patch  material with the hot knife.  [Figure C] •  Verify the seams of the patch are even and thread  tension is correct. •  Hot knifed edge of the crossport must be smooth  and even. 1.  Many times, when the crossport is damaged, there is  extensive gathering and distortion of the fabric. Before  progressing, smooth out the fabric to reshape the rib  as close as possible to its original shape. 1.  The basic idea of the crossport repair is a three-sided  patch sewn the same as a standard French fell seam  patch. The fourth side is open and re-cut to the shape  of the crossport.  [Figure A]  However, if the damage  Inspection Disassembly Reassembly 7-36