TM 10-1670-272-23&P 0012 000012 00-7 PATCHING Patching is a procedure used to repair holes that cannot be darned. 1. Parachute canopy patching limitations. The following is a list of patching limitations for the MC1-1B/MC1-1E parachute assembly: WARNINGThe limitations prescribed for the parachute canopy patching will be stringently adhered to under all circumstances and without any deviations. Failure to do so may result in death or serious injury to personnel. a. A patch will not be applied to a damaged area that has been previously patched. b. There is no limitation to the number of patches, or size of patch, made to each canopy gore section or gore panel. However, determination should be made as to the most economical method to be used, i.e., two or more patches versus one large patch, or one large patch versus a section replacement. A patch applied to a parachute canopy may extend from radial seam to radial seam. c. Use no more than two mending cloth patches on a canopy section. Limit the size of the finished patch to 10-inches. Round the corners of the patches to 1-inch radius. Use size E nylon thread, and sew a row of 7 to 11 stitches per inch, 1/16-inch in from the outer edge of the patch. Table 3 prescribes sizes of parachute mending cloth. Table 3. Mending Cloth Patching Specifications. DAMAGED AREA SIZE PATCH MINIMUM SIZE 1-inch to 1½-inches 2-inches 1½-inches to 2-inches 3½-inches 2-inches to 3-inches 4½-inches 3-inches to 5-inches 9-inches 5-inches to 7-inches *10-inches *Maximum size for a canopy patch is 10-inches. NOTE The patch may be placed on top of the net when stitching the patch to the lower lateral band.
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