ARMY TM 10-1670-279-23&P
AIR FORCE T.O. 13C5-27-2
NAVY NAVAIR 13-1-28
Darning. Darn a hole or tear in a gore section which does not exceed 3/4 inch in length or diameter as
prescribed in para. 2-18, using size E nylon thread. Each gore section may be darned three times.
Patching. Use a patch to repair holes which exceed 3/4 inch in length or diameter using the sewn patch.
Limitations. The following limitations apply to the 22-foot extraction parachute.
The limitations prescribed for parachute canopy patching will be
stringently adhered to under all circumstances and without any
1 A patch will not be applied to a damaged area that has been previously patched.
2 Each gore section is limited to two patches. However, determination should be made as to the
most economical method to be used, i.e., two 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.
Sewn patches. There are two types of sewn patches authorized, the basic and miscellaneous.
A basic patch is used to repair damaged cloth when the affected area is no closer than 1 inch from a radial webbing,
upper lateral band or lower lateral band. Should a damaged area be closer than 1 inch to the cited areas, a
miscellaneous patch will be made.
Sewn patches on the canopy will be applied to the inside and may be
square or rectangular.
When a miscellaneous canopy patch is used, cut stitching and remove
or lay aside items which may interfere with patch application. Refer to
applicable item repair paragraph for proper procedures.
1 Using marking aid of contrasting color, mark a square or rectangle around area to be patched
and ensure one side of marked square or rectangle is parallel to warp or filling of fabric.
2 Cut damaged area fabric along lines made in 1 above. Further cut fabric diagonally at each
corner to allow a 1/2-inch foldback in raw edges. Cut stitching and lay aside or remove any item
which will interfere with miscellaneous patch application.
3 Make 1/2-inch foldback on each raw edge. Pin and baste each foldback to complete prepared
hole. Basting will be performed using procedures in para. 2-18a.