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Figure 2-40.  Bridle Loop Replacement Details
Figure 2-41.   Vent Line Replacement Details.

TM-10-1670-275-23P Parachute Cargo Type: 12-Foot Diameter High-Velocity Cargo Parachute NSN 1670-00-788-8888 Manual
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ARMY TM 10-1670-275-23&P AIR FORCE TO 13C5-25-2 NAVY NAVAIR 13-1-26 2-22.     Vent Lines. This task covers:      a.  Repair         b.  Replace Tools: Equipment Condition: Sewing Machine, Zig-Zag (Table 2-2) Inspected (paragraph 2-9) Cleaned (paragraph 2-12) Materials/Parts: Unpacked, canopy in proper layout. Cord, Nylon, Type II, Item 12, Appendix D Reference: Thread, Nylon, Size E, Item 29/30, Appendix D    Group No.  0102, MAC, Section II, Appendix B Personnel Required: 43E(10) Parachute Rigger a.  Repair.  Repair vent lines requiring restitching, as follows: (1) Use a zig-zag sewing machine to restitch any loose or broken stitches. (2)  Restitch over original stitch pattern using nylon thread, size E.  Overstitch 112 inch to lock stitches. b.  Replace.  Replace missing or damaged vent lines as follows: (1)  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. (2)  Remove damaged vent line by cutting stitching that holds line to canopy at both sides of apex. (3)   Cut a 14-Inch length of type II, nylon cord.  Sear or dip ends of cord (para.  2-18). (4)   Position one end of new vent line In exact location formerly occupied by end of old line (figure 2-41). NOTE Measuring  from  the  outside  edge  of  the  upper  lateral  band,  the  vent  line  should extend 2 inches into radial seam. (5)  Using a zig-zag sewing machine and nylon thread, size E, stitch new line In place.  Begin stitching on line 1/4 inch above upper edge of vent reinforcement tape and sew to 1/4 Inch  beyond end of line, 7 to 11 stitches per Inch and 1/8 Inch wide (figure 2-41). 2-58







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