TM 10-1670-269-23&P
0028 00
0028 00-9
(7)
Bartack or zig-zag stitch pocket to end flap according to details in illustration (A) above,
using size E nylon thread. Make sure that machine stitching does not pass through hand
tacking or ends of coil spring.
WARNING
The maximum pull force to open a T-10R or MIRPS parachute is 27-
pounds. If pull test that follows does not actuate the reserve
parachute, the pocket will be removed and replaced.
The pull force required to activate the MIRPS must be no less than
7-pounds and no more than 27-pounds.
10. Pull Test. After replacement of new ripcord grip pocket, the following checks will be performed prior
to placing in service.
NOTE
To conduct the T-10R ripcord pull tests, the packed T-10R shall be
firmly attached by its two-connector snaps to a suitable rigid
structure (hook or nail attached to a wall or 4 by 4 post) such that
the pack tray is positioned vertically with the ripcord grip pointing
down. There must be sufficient clearance beneath the vertically
suspended T-10R to suspend a weight from the ripcord grip and
allow it to withdraw the ripcord grip pins from the cones activating
the parachute.
To conduct the MIRPS ripcord pull tests, the packed MIRPS shall be
firmly attached by its two-connector snaps to a suitable rigid
structure (hook or nail attached to a wall or 4 by 4 post) such that
the pack tray is positioned horizontally with the ripcord grip pointing
down. There must be sufficient clearance beneath the horizontally
suspended MIRPS to suspend a weight from the ripcord grip and
allow it to withdraw the ripcord grip pins from the soft loops
activating the parachute.
a. Rotate the ripcord grip clockwise and counter clockwise within the pocket about 45 degrees in
each direction as it’s being slowly withdrawn from the pocket.
b. Reinsert the grip in the pocket and repeat the procedure in paragraph b., above, four more times.
This will serve to break-in a tight pocket.
11. Conduct a 7-Pound Minimum Ripcord Pull Test on the MIRPS as follows:
a.
Carefully attach a 7-pound weight to the ripcord grip and very slowly remove your hand from
under the weight to allow the weight to be slowly transferred to the ripcord grip. Do not release
the weight suddenly or let it drop since this will invalidate the test. The weight must be evenly
distributed around or centered on the ripcord grip to prevent the ripcord grip from tilting. The
weight must not completely withdraw the ripcord pins from the soft loops or the ripcord grip
completely from the pocket.
