ARMY TM 10-1670-281-23&P
AIR FORCE T.O. 13C5-32-2
NAVY NAVAIR 13-1-32
2-26. Canopy Line (cont).
(g) Pass the loose end of the replacement vent line through the canopy bridle loop and position
the end on the applicable radial seam on the opposite side 6f the canopy using the
procedures in (f) above.
(h) Cut two 6-inch lengths of 9/16-inch-wide, type I nylon webbing and wax each webbing end
(i) Place a 6-inch long webbing lengthwise on the inside of each affected radial seam with the
upper end of each webbing length alined with the upper edge of the upper lateral band.
Insure each webbing length is centered on the respective radial line and positioned vent line
end. Secure each webbing length with temporary tacking or pushpins.
(d) Working on the canopy outside, secure each positioned end of the replacement vent line to
the applicable radial seam and 6-inch webbing length by stitching a 3/16-inch-wide row of
double-throw zigzag stitching from a point 1/4 inch above the upper lateral band to the lower
edge of the applicable vent line end. Stitching will be made using a medium-duty sewing
machine, size E nylon thread, 7 to 11 stitches per inch.
(k) Beginning 6 inches below the upper edge of the-upper lateral band, secure each radial line
upper end to the radial seam and 6-inch webbing length by stitching a 6-inch long row of
3/16-inch wide double throw zigzag stitching to the upper edge. Stitching will be made using
a medium-duty sewing machine and size E nylon thread, 7 to 11 stitches per inch. Remove
temporary tacking or pushpins installed in (b), (f), (g) and (i), above.
(I) Reinstall the upper radial line reinforcement tape removed in (c), above, by restitching
according to original construction details and paragraph 2-28, below. Stitching will be made
using a medium-duty sewing machine, size E nylon thread, 7 to 11 stitches per inch.
(4) Replacing a Canopy Line. Replace an unserviceable canopy line by fabricating as follows:
(a) Cut and remove all stitching that holds canopy line to canopy. Remove other items as
required, allowing entire line to move freely across lateral bands, through V-tabs, and within
radial seams. Do not remove V-tabs unless they are damaged.
(b) Cut off damaged line (hereafter referred to as old line) 24 inches below skirt on each side of
(c) Select a spool of type IV coreless nylon cord (hereafter referred to as new line), and wax end
of new line.
(d) Insert waxed end of new line into sheath of old line at least 1 inch, and whipstitch, or
otherwise temporarily secure ends together (see figure 2-115).
(e) Grasp cut end of old line at opposite side of canopy skirt and pull old line, working line
through V-tabs and channels and across vent, until end of new line extends approximately 10
inches beyond link assembly. Cut old line from new line at whipstitching to include waxed