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Table 2-3. Stitching and Restitching Specifications | Up
TM-10-1670-294-23P Parachute Cargo Type: 35-Foot Diameter Ribbon Extraction Parachute NSN 1670-01-283-4031 Manual | Next
Figure 2-36. Hand Darning Method |
ARMY TM 10-1670-294-23&P
AIR FORCE T.O. 13C5-33-2
NAVY NAVAIR 13-1-34
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 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 2-35).
(c)
Turn the material and stitch back and forth across the stitching made In (b), above,
until the hole or tear is completely darned (B, figure 2-35).
(d)
If applicable, restencil Informational data, gore number(s), or identification marks using
the criteria in paragraph 2-19.
.
Figure 2-35. Darning Method Using a Darning Sewing Machine.
(2)
Hand darning. When repair of a hole or tear is made by hand darning, the darn should match
the original weave of the damaged material as closely as possible. Hand darning will be
performed as follows.
(a)
Using an authorized marking aid of contrasting color, mark a square around the damaged area
and ensure that the marking is a least 1/4 inch back from edge of the damaged area. The
marking will be made with the warp and filling of the material.
2-51
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