ARMY TM 10-1670-281-23&P
AIR FORCE T.O. 13C5-32-2
NAVY NAVAIR 13-1-32
2-28. Radial Seam Reinforcement Tape.
This task covers:
Knife, Item 4, Appendix B
Cleaned, paragraph 2-12
Knife, Hot Metal, Item 5, Appendix B
Inspected, paragraphs 2-9, paragraph 2-13
Sewing Machine, Zig-Zag, Item 17, Appendix B
Unpacked, canopy laid flat
Yardstick, Item 24, Appendix B
Tape, Nylon, Type IlI, 1/2 Inch, Item 31,
Thread, Nylon, Size E Item 39/40, Appendix D
a. Repair. Stitch and restitch broken or loose stitching according to original construction details using the
procedures in paragraph 2-19.
b. Replacement. Replace a damaged radial seam reinforcement tape by fabricating as follows (figure 2-
(1) Remove the original radial seam reinforcement tape by cutting the stitching that secures the tape to
the radial seam.
(2) Cut a 2 5/6-, 4 1/4- or 7 1/2-inch length of 112-inch wide type III nylon tape, as applicable. Sear the
(3) Make a 3/4-inch turn under on one end of the tape and a 1/4-inch turn under on the opposite end.
(4) Position the folded tape in the original reinforcement tape location on the radial seam, with the turn
under facing down. The folded end with the 3/4-inch turn under shall face away from the vent
reinforcement (upper lateral band) (A, figure 2-120) or skirt reinforcement (lower lateral band) (B,
figure 2-120), whichever is nearest.
(5) Secure the applicable reinforcement tape to the radial seam and the radial line by stitching a 1/4-
inch wide double-throw zig-zag stitch according to original construction details and figure 2-120,
using a zig-zag sewing machine and size E nylon thread, 7 to 11 stitches per inch.
A 3/4-inch pucker will be allowed in the radial seam fabric between the two
reinforcement tape stitch formations at the lower end of the radial seam.