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Table 2-3.   Stitching and Restitching Specifications (cont)
Figure 2-38.   Hand Darning Method

TM-10-1670-275-23P Parachute Cargo Type: 12-Foot Diameter High-Velocity Cargo Parachute NSN 1670-00-788-8888 Manual
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ARMY TM 10-1670-275-23&P AIR FORCE TO 13C5-25-2 NAVY NAVAIR 13-1-26 2-17. Repair - Sewing Procedures (cont). (2)   Other parachute Items.   Stitching and restitching on other parachute items constructed  from cloth, canvas,  and  webbing  should  be  accomplished  with  thread  which  matches  the  color  of  the  original  stitching, when possible.  All straight stitching should be locked by backstitching at least 112 inch.  Restitching should be locked by overstitching each end of the stitch formation by 112 inch.  Zigzag stitching does not require locking; however,  zigzag  restitching  should  extend  at  least  114  inch  into  undamaged  stitching  at  each  end,  when possible.  Restitching should be made directly over the original stitching, following the original stitch pattern as closely as possible: c.   Darning.   (Refer  to  Tables  2-2  and  2-3).   Darning  is  a  sewing  procedure  used  to  repair  limited  size holes, rips, and tears in assorted air delivery items constructed from textile material such as parachute canopy gore sections.  A darning repair may be made either by hand or sewing machine, depending upon the method preferred and the availability of equipment.  However, a darning machine should be used to darn small holes and tears where fabric is missing.  Darning of previously patched material can be performed provided darning size limitations prescribed in the paragraph applicable to the item are not exceeded.  A darning repair will be performed using the following procedures, as appropriate: (1) Machine darning.  Proceed as follows: (a)  Using an authorized marking aid of contrasting color, mark a square around the damaged area and ensure that the marking is at least 1/4 inch back from each edge of the damaged area.  The marking will be made with the warp and the filling of the material. (b)  Darn the damaged area by sewing the material in a back-and-forth manner, using size A or E nylon thread, allowing the stitching to run with the warp or filling of the fabric (A, figure 2-37). (c)  Turn the material and stitch back and forth across the stitching made in (b) above until the hole or tear is completely darned (A, figure 2-37). (d)  If applicable, re-stencil informational data, gore number(s), or identification marks using the criteria in paragraph 2-19. Figure 2-37.   Darning Method Using a Darning Sewing Machine. 2-50







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