TM 10-1670-277-23&P 0021 00
UNIT MAINTENANCE
28-FOOT DIAMETER CARGO EXTRACTION PARACHUTE
RADIAL TAPE
0021 00-1
THIS TASK COVERS:
Repair
Tools
Aid, Splicing (Item 1, WP 0056 00)
Knife (Item 5, WP 0056 00)
Knife, Hot Metal (Item 6, WP 0056 00)
Sewing Machine, Light-Duty (Item 21, WP 0056 00)
Sewing Machine, Zig-Zag (Item 23, WP 0056 00)
Shears (Item 24, WP 0056 00)
Yardstick (Item 26, WP 0056 00)
Materials/Parts
Thread, Nylon, Size E (Item 30/31, WP 0065 00)
Webbing, Nylon, Type IV, 1-IN., OD (Item 41, WP 0065 00)
Personnel Required
92R (10) Parachute Rigger
Equipment Condition
Cleaned (WP 0008 00).
Inspected (WP 0009 00).
Unpacked, laid flat.
References
WP 0012 00, WP 0013 00
REPAIR
1. Restitching. Restitch radial tape using a light-duty sewing machine and size E nylon thread of contrasting
color. Stitch over original pattern, 7 to 11 stitches per inch. Lock each row of stitches two-inches at each
end. When radial webbing stitching has failed and section separation from radial webbing has occurred
at the leading or trailing edge of ring slots, the repair will be accomplished as follows:
a. Restitch failure in accordance with original construction. Sew a double throw zig-zag stitching across
the width of radial webbing at leading/trailing edge of ring slot. Zig-zag stitching should be centered
on width of reinforced hem of leading/trailing edge and will be stitched in accordance with WP 0012
00, STITCHING AND RESTITCHING RESPECIFICATIONS.
b. As an option, if a zig-zag sewing machine is not available, a box stitch pattern (double row stitching at
box ends) 11/4-inches in length may be used. Box should start on reinforced hem of leading/trailing
edge, approximately 1/8-inches from edge of ring, and proceed in length along radial seam of ring.
NOTE
If any portion of a radial tape is damaged on the inside and the outside
of the canopy, the splicing effort will be accomplished on both the inside
and outside radial tape webbing. Radial webbing may be spliced one
time provided the damaged area does not exceed 12-inches in length.
Webbing splices may be applied to either or both sides of radial seam.
2. Splicing. Splice damaged radial tape as follows:
a. Place canopy on a repair table with damaged side of radial tape facing up and smooth out canopy
material in affected area.
b. Cut a length 1-inch wide, type IV nylon tape, long enough to extend 12-inches beyond each side of
damaged area and sear ends as specified in WP 0013 00, SEARING AND WAXING.
