ARMY TM 10-1670-279-23&P
AIR FORCE T.O. 13C5-27-2
NAVY NAVAIR 13-1-28
Bridle Centering Line.
This task covers:
a. Repair b. Replace
Knife, Item 4, Appendix B
43E(10 Parchute Rigger
Knife, Hot Metal, Item 5, Appendix B
Sewing Machine, Zig-Zag, Item 17,
Yardstick, Item 24, Appendix B
Cleaned, paragraph 2-12
Inspected, paragraphs 2-9, 2-13
Unpacked, canopy laid flat
Cord, Nylon, Type V, Item 6, Appendix D
Thread, Nylon, Size E, Item 26/27,
Group No. 01, MAC, Section II,
Marking Aid, Item 15/16, Appendix D
Repair and/or replacement of the bridle centering line is accomplished at the
Intermediate (DS) maintenance level only, in accordance with the Maintenance
Allocation Chart (MAC).
Repair. Restitch broken or loose thread using a zig-zag sewing machine and size E nylon thread (reference
table 2-3). Stitch over original stitch pattern. Overstitch 1/8 inch to lock stitches.
Replace. Replace a damaged bridle centering line by fabricating as follows:
Remove original bridle centering line by cutting stitching which secures each end of line to an attaching
Cut an 8-inch length of of type V coreless nylon cord and sear ends (para. 2-19).
Using a marking aid, mark cord length at center and at a point 1/2 inches on each side of center mark
Position cord length in original centering line location and temporarily handtack the cord ends to
attaching vent line, using temporary tacking procedures outlined in para. 2-18a. Ensure all vent lines
pass freely through loop formed at center of tacked line.