 0015 00   TM 10-1670-287-23&P  NOTE A basic patch applied to the parachute canopy will be square or  rectangular in shape. ADHESIVE NYLON PARACHUTE  MENDING CLOTH WILL NOT BE USED. Ensure proper thread  tension is used to prevent distortion of the canopy.  a.  Place repairable item on repair table, smooth the fabric around the damaged area, and secure  item to table with push-up pins. Do not pin damaged area.  b.  Using an authorized marking aid of contrasting color, mark a square or rectangle around area to  be patched.  c.  Cut damaged area fabric along the lines made in step b., above. Further cut the fabric diagonally  at each corner to allow a ½-inch fold back in the raw edges.  d.  Make a ½-inch fold back at each raw edge. Pin and baste each foldback to complete the  prepared hole. Basting is performed using procedures on page 0015 00.  e.  Using same type material as in original construction, mark and cut a patch 2 ½-inches wider and  longer than the inside measurements of prepared hole.  f.  Center patch material over prepared hole.  g.  Make a ½-inch fold under on each edge of patch material and pin in position. Baste patch to  prepared area. Basting is performed using procedures on page 0015 00.  h.  Remove pushpins securing canopy to repair table and secure patch by stitching, using the  applicable details in the illustration above and page 0015 00. Make the first row of stitching  completely around patch. It is not necessary for the stitch pattern to exactly follow the angles of  the patch. It is preferred to round the corners of the patch, to stitch at a 45-degree angle, rather  than a 90-degree angle. For corners less than or greater than 90-degrees, adjust accordingly.  i.  Turn canopy over and make second row of stitching, ensuring that locking stitches are on  opposite sides of patch. Stitching is performed in accordance with page 0015 00.  j.  If applicable, restencil informational data according to procedures in WP 0017 00.  6.  Applying miscellaneous canopy patch. A miscellaneous canopy patch, which may be irregularly  shaped, is used to repair damaged canopy material when the location of the damaged area requires  the patch to extend into or over a seam or a reinforced seam. Ascertain the type of patch required for  the canopy using the details in the illustrations on the following page. A canopy section that cannot  be patched with a basic patch as outlined in paragraph 5., above, is patched with a miscellaneous  patch. Apply a miscellaneous patch to a section as follows:  0015 00-12  Change 1 