ARMY TM 10-1670-294-23&P
AIR FORCE T.O. 13C5-33-2
NAVY NAVAIR 13-1-34
2-22. Vent Lines
This task covers:
Knife, Item 5, Appendix B
Inspected (paragraph 2-13).
Knife, Hot Metal, Item 6, Appendix B
Cleaned (paragraph 2-12).
Sewing Machine, Heavy Duty, Item 19, Appendix B
Unpacked, canopy In proper layout.
Yardstick, Item 25, Appendix B
Webbing, Tubular Nylon, 1-In, Item 38, Appendix D.
Pencil, Marking Aid, Item 12, Appendix D.
Thread, Nylon, Size 3, Items 25/26, Appendix D.
Repair. Repair vent lines requiring restitching as follows.
Use a heavy duty sewing machine to restitch any loose or broken stitches.
Restitch over original stitch pattern using size 3 nylon thread. Overstitch 1/2 Inch to lock
Replacement of vent lines Is accomplished at the Direct Support (DS)
maintenance level only In accordance with the Maintenance Allocation Chart
(MAC) Appendix B.
Replace. Replace missing or damaged vent lines as follows:.
Place canopy In proper layout on table and trace damaged vent line from one end of original
vent line to other end. Using suitable marker, mark canopy at each end of vent line.
Remove damaged vent line by cutting stitching that holds line to canopy at both sides of apex.
Cut a 58-inch length of 1-inch webbing that will extend 6 1/2 inches beyond edge of vent. Sear
or dip ends of webbing (para 2-18).
Position one end of new vent line in exact location formerly occupied by end of old line (figure