ARMY TM 10-1670-281-23&P
AIR FORCE T.O. 13C5-32-2
NAVY NAVAIR 13-1-32
2-18. Maintenance Limitations. Only those maintenance functions specified in the Maintenance Allocation
Chart (Appendix B) are authorized to be performed on cargo parachutes. Repair cost limitations to preclude.
uneconomical repair of cargo parachutes shall conform to the requirements of AR 750-1 and TB 43-0002-4.
2-19. Repair-Sewing Procedures.
This task covers:
a.
Basting and Temporary Tacking
c.
Darning
b.
Stitching and Restitching
d.
Zig-Zag Sewing
Tools:
Equipment Condition:
Specified in paragraph applicable to the
Unpacked. Canopy with defects recorded and clean.
item being repaired.
Materials/Parts:
Specified in paragraph applicable to the
item being repaired.
NOTE
Sewing requirements will vary according to the type of item being repaired
and the type of repair being made. The type of sewing machine, type of
thread, the stitch range, and the stitch pattern, if applicable, required to
accomplish a sewing procedure will be specified in the paragraph applicable
to the item being repaired. All original stitching that is cut during the
performance of a sewing procedure will be removed from the applicable item.
Immediately after the accomplishment of a machine sewing procedure, trim
thread ends to a point as close as possible to the material which has been
sewn.
a. Basting and Temporarily Tacking. Basting and temporary tacking are hand-sewing methods used to
temporarily hold layers of cloth fabric together while a repair is being performed. The following is a list of
procedures which apply to basting and temporary tacking actions:
(1) Basting and temporary tacking should be made using thread which is of a contrasting color to the
material being worked.
(2) When basting, do not tie knots at any point in the thread length. Also, the sewing should be made
with two stitches per inch.
(3) Temporary tacking will usually be made using a length of size E nylon thread (item 39/40, Appendix
D). However, an alternate type thread may be specified within the paragraph applicable to the item.
(4) Immediately upon completion of a repair, remove previously made basting or temporary tacking
stitches.
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