TM 10-1670-293-23&P
0018 00
UNIT MAINTENANCE
T-10C/T-10D TROOP BACK PARACHUTE ASSEMBLY
RADIAL SEAM
0018 00-1
THIS TASK COVERS:
Repair
INITIAL SETUP:
Tools
Knife (Item 14, WP 0039 00)
Needle, Basting (Item 19, WP 0039 00)
Sewing Machine, Light-Duty (Table 1, WP 0012 00)
Shears (Item 29, WP 0039 00)
Materials/Parts
Cloth, Parachute, Nylon, 1.1-oz. (Item 10, WP 0053 00)
Thread, Cotton (Item 43, WP 0053 00)
Thread, Nylon, Size A (Item 46, WP 0053 00)
Thread, Nylon, Size E (Item 47/44, WP 0053 00)
Pushpins
Personnel Required
92R(10) Parachute Rigger
Equipment Condition
Parachute canopy laid out on table.
References
Group No. 01, MAC (WP 0042 00)
Table 1, WP 0012 00; Table 2. WP 0012 00;
Table 3, WP 0012 00
REPAIR
Patching repairs the radial seam. There is no limit to the length of a miscellaneous patch made on a
canopy radial seam. In addition, a radial seam may be patched on both the inside and the outside of a
canopy, as required. Patch a damaged radial seam as follows:
1. Place the canopy on a repair table with the damaged side of the radial seam facing up.
2. As required, cut the applicable stitching to remove or lay aside items that may interfere with the
patching process.
3. Smooth the canopy material surrounding the damaged area and secure the undamaged portion of the
seam to the table with pushpins. Do not pin the damaged area of the seam.
4. Using the same type material as in the original canopy construction, cut a rectangular patch 3½-inches
wider and 4-inches longer than the damaged area. If one piece of material is not long enough to achieve
the cited size, join additional pieces of cut material with ½-inch-wide lapped seams.
5. Fold the patch material lengthwise and align the raw edges.
6. Center and secure the radial seam patch material over the damaged area with pushpins. Fold-under ½-
inch on each side of the new patch material and secure each side with pins.
7. Fold-under 1½-inch at each end of the new patch material and secure with pins. Baste both sides of
the new patch to the canopy using the procedures in WP 0012 00.
