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68-Inch Pilot Parachute
Figure 2-140.  Typical Canopy Panel Patches.

TM-10-1670-281-23P Parachute Cargo Type: 64-Foot Diameter Model G-12D NSN 1670-00-893-2371 and Model G-12E NSN 1670-01-060-3705 Manual
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ARMY TM 10-1670-281-23&P AIR FORCE T.O. 13C5-32-2 NAVY NAVAIR 13-1-32 (2)  Canopy panel. (a)    Restitching.    Stitch  and  restitch  with  size  E  nylon  thread  which  matches  the  color  of  the original  stitching,  when  possible.    Lock  all  straight  stitching  by  backstitching  at  least  1/2  inch.    Restitch  by overstitching each end of the stitch formation by 1/2 inch.  Restitch directly over the original stitching, following the original stitch pattern as closely as possible.  Stitching will be in accordance with paragraph 2-19 and table 2-3. (b)  Darning.  Darn a hole or tear which does not exceed 3/4 inch in length or diameter using the procedures in paragraph 2-19 and size E nylon thread.  A canopy panel may be darned a maximum of three times. (c)  Patching.  Patch a hole or tear which exceeds 3/4 inch in length or diameter using the details in figure 2-139 and 2-140.  Patch material will be either type 11 .1-ounce nylon cloth or type Il 1.6-ounce nylon cloth, according to original panel material.  The 68-inch-diameter pilot chute canopy is limited to three patches for the entire canopy and the size of each patch is limited to the size of the panel being patched.  Apply a patch as follows: 1  Place the canopy on a repair table, smooth the fabric around the damaged area and secure the canopy to the table with pushpins.  Do not pin the damaged area. 2  Using an authorized marking aid of contrasting color, mark a square or rectangle around the area to be patched and insure that one side of the marked square is parallel to the warp or filling of the material. 3    Cut  the  damaged  area  fabric  along  the  lines  made  in  2,  above.    Further  cut  the  fabric diagonally at each comer to allow a 1/2-inch foldback in the raw edges. 4    Make  a  1/2-inch  foldback  on  each  raw  edge.    Pin  and  baste  each  foldback  to  complete  the prepared hole.  Basting will be performed using the procedures in paragraph 2-19a. 5  Using the same type material as original construction, mark and cut a patch 2 1/2-inches wider and longer than the inside measurements of the prepared hole. 6  Center the patch material over the prepared hole and insure the warp or filling of each patch material  matches  the  warp  or  filling  of  the  fabric  being  patched.    Pin  the  patch  material  in position. 7    Make  a  1/2-inch  fold  under  on  each  edge  of  the  patch  material  and  baste  the  patch  to  the prepared area.  Basting will be performed using procedures in paragraph 2-19a. 8  Remove the pushpins securing the canopy to the repair table and secure the patch by stitching using  the  applicable  details  in  figure  2-139  and  paragraph  2-19b.    Make  the  first  row  of stitching  completely  around  the  patch.    Turn  the  canopy  over  and  make  a  second  row  of stitching around the prepared hole.  Stitching will be performed in accordance with paragraph 2-19b. 9  If applicable, restencil information data according to procedures in paragraph 2-19. 2-195







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