Figure 3-8. Common miscellaneous patches for block-constructed canopies (sheet 5 of 5).

TM 10-1670-201-23

T.O. 13C-1-41

NAVAIR 13-1-17

a 1/2-inch foldback of each raw edge. Pin and baste

each edge foldback using the procedures in paragraph

3-8.

(g) Using the same type material as in

original canopy construction, mark and cut a patch 2

1/2-inches wider and longer than the inside

measurements of the prepared hole. Insure that one

side of the patch material is marked and cut along the

warp or filling of the fabric.

(h) Center the patch material over the

prepared hole and insure the warp or filling of the patch

material matches the warp or filling of the fabric being

patched. Pin the patch material in position.

(i) Make a 1/2-inch foldunder on each

edge of the patch material and baste the patch to the

prepared area. Basting will be performed using the

procedures in paragraph 3-8.

(j) Remove the pushpins securing the

canopy to the repair table and secure the patch by

stitching according to the details in figures 3-7 or 3-8, as

applicable, using the stitching specifics outlined in the

applicable item equipment publication. Make the first

row of stitching completely around the edges of the

patch. Turn the canopy right side out and make a

second row of stitching around the edges of the

prepared hole.

Stitching will be performed in

accordance with paragraph 3-9.

(k) Reposition the items removed or

laid aside in (b) above in the original location and secure

each item to the canopy by restitching according to

original construction details and paragraph 3-9.

(I) If applicable, restencil informational

data or gore numbers according to procedures in

paragraph 3-5.

(2) The pressure-sensitive (iron-on) patch. A

miscellaneous patch constructed from pressure-

Figure 3-8. Common miscellaneous patches for

sensitive-coated cotton balloon cloth will only be applied

block-constructed canopies (sheet 5 of 5).

to the cotton muslin canopies of the G-14, G-13. and

(d) Using an authorized marking aid of

the 12- and 26-foot-diameter high-velocity cargo para-

contrasting color, mark a rectangle or triangle around

chutes. Apply a pressure-sensitive (iron-on) patch as

the damaged area. Make the mark 1/2 inch from any

follows:

adjacent seam, reinforcement, or lateral band. Insure

(a) Place the canopy on a work table

that one side of the marked rectangle or triangle is

and smooth all wrinkles from the canopy material

parallel to the warp or filling of the canopy material.

surrounding the damaged area.

(e) Prepare the damaged area hole by

(b) Cut a piece of pressure-sensitive-

cutting along the marks made in (d) above. Also make

coated cotton balloon cloth large enough to extend 1

a diagonal cut at each corner of the formed hole to

inch beyond all edges of the damaged area. If an edge

permit foldback of each raw edge.

of the damaged area is closer than 1 inch to a radial

(f) To complete hole preparation, make

3-22