FM 4-20.112 AIRDROP OF SUPPLIES AND EQUIPMENT: RIGGING TYPICAL SUPPLY LOADS (February 2009) - page 5

 

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FM 4-20.112 AIRDROP OF SUPPLIES AND EQUIPMENT: RIGGING TYPICAL SUPPLY LOADS (February 2009) - page 5

 

 

Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
PLACING EXTRACTION PARACHUTE
5-45. Select the extraction parachute and extraction line needed using the extraction line requirements
table in FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5. Place the extraction
parachute and line on the load for installation in the aircraft.
INSTALLING PROVISIONS FOR EMERGENCY RESTRAINTS
5-46. Select and install the provisions for the emergency aft restraints according to the emergency aft
restraint requirements table in FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-
5.
MARKING RIGGED LOAD
5-47. Mark the rigged load according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-
010/TO 13C7-1-5, and as shown in Figure 5-40. Complete Shipper’s Declaration for Dangerous Goods. If
the load varies from the one shown, the weight, height, CB, and parachute requirements must be
recomputed.
EQUIPMENT REQUIRED
5-48. Use the equipment listed in Table 5-3 to rig this load.
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-69
Chapter 5
CAUTION
Make the final rigger inspection required by AR 59-4 and FM 4-
20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5
before the load leaves the rigging site.
CB
RIGGED LOAD DATA
Weight: Load shown
26,060 pounds
Minimum Weight:
5,040 pounds
Maximum Suspended Weight
25,000 pounds
Height
92 inches
Width
108 inches
Overall Length
192 inches
Overhang: Front
0 inches
Rear
0 inches
Center of Balance (from front edge of the platform)
91 inches
Extraction System with 16-foot cable (adds 18 inches to length of platform)
EFTC
Note. Refer to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 (Table 2-2) when
adding additional parachutes for heavier loads for the suspension/tandem link positioning.
Figure 5-40. 20-mm Ammunition Rigged on a 16-Foot, Type V Platform for Low-Velocity
Airdrop
5-70
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
Table 5-3. Equipment Required for Rigging 20-mm Ammunition on a 16-Foot, Type V
Platform for Low-Velocity Airdrop
National Stock Number
Item
Quantity
8040-00-273-8713
Adhesive, paste, 1-gallon
As required
Clevis, suspension:
4030-00-090-5354
1-inch (large)
7
8305-00-880-8155
Cloth, coated (nylon, type II, green, 60-in)
As required
4020-00-240-2146
Cord, nylon, type III
As required
1670-00-434-5785
Coupling, airdrop, extraction force transfer with
16-foot cable
1
1670-00-360-0328
Cover, clevis, large
5
8135-00-664-6958
Cushioning material, packaging, cellulose wadding
As required
8305-00-191-1101
Felt, ½-inch thick
As required
1670-01-183-2678
Leaf, extraction line (line bag) (add 2 for C-17)
2
Line, extraction, type XXVI nylon webbing:
1670-01-062-6313
60-foot (3-loop), type XXVI
1
1670-01-107-7651
140-foot (3-loop), type XXVI
2
1670-01-062-6313
60-foot (3-loop), type XXVI for C-17 drogue line
1
1670-01-493-6418
Link assembly, two-point:
1
5351-00-010-4659
Nail, steel wire, common 8d
As required
1670-00-753-3928
Pad, energy-dissipating, honeycomb
20 sheets
Parachute:
1670-01-016-7841
Cargo, G-11
5
1670-00-040-8135
Cargo, extraction, 28-foot
1
1670-01-063-3715
Cargo, extraction, 15-foot for C-17
1
Platform, airdrop, type V, 16-foot
1670-01-353-8425
Bracket assembly, EFTC
1
1670-01-162-2372
Bracket assembly, extraction
1
1670-01-162-2376
Clevis assembly
72
1670-01-162-2381
Tandem link
4
5530-00-128-4981
Plywood, 3/4-inch
As required
1670-01-097-8817
Release, cargo parachute, M-2
1
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-71
Chapter 5
Table 5-3. Equipment Required for Rigging 20-mm Ammunition on a 16-Foot, Type V
Platform for Low-Velocity Airdrop (Continued)
National Stock Number
Item
Quantity
Sling, cargo airdrop:
1670-01-062-6304
9-foot (2-loop), type XXVI nylon webbing
1
1670-01-063-7761
16-foot (2-loop), type XXVI nylon webbing
4
1670-01-062-6311
120-foot (2-loop), type XXVI nylon webbing
3
5340-00-040-8219
Strap parachute release, multicut
2
7501-00-266-5016
Tape, adhesive, 2-inch
As required
7501-00-266-6710
Tape, masking
As required
1670-00-937-0271
Tie-down assembly, 15-foot
106
1670-01-483-8259
Towplate release mechanism (H-block) (C-17)
1
Webbing:
8305-00-268-2411
Cotton, 1/4-inch, type I
As required
Nylon:
8305-00-082-5752
Tubular, 1/2-inch
As required
8305-00-263-3591
Type VIII webbing
As required
5-72
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
SECTION IV-RIGGING MASS SUPPLY BOX
DESCRIPTION OF LOAD
5-49. Two mass supply boxes are rigged for low-velocity airdrop on a 16-foot, type V airdrop platform.
Loads may include any bulk items of general supply that can be packed into the box without shifting the
load. Each load must weigh at least 5,040 pounds, including parachutes. Refer to FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 for the weight limitations for the number of
parachutes to be used.
PREPARING PLATFORM
5-50. Prepare a 16-foot, type V platform as shown in Figure 5-41.
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-73
Chapter 5
CLEVISES
26A THROUGH 1A
LEFT
REAR
FRONT
RIGHT
CLEVISES
26 THROUGH 1
Step:
1. Inspect, or assemble and inspect, a 16-foot, type V platform as outlined in TM 10-1670-
268-20&P/TO 13C7-52-22.
2. Install a tandem link to the front of each platform side rail using holes 1, 2, and 3.
3. Install a tandem link to the rear of each platform side rail using holes 30, 31, and 32.
4. Install clevises on bushings 1 and 2 of each front tandem link.
5. Install clevises on bushings 2 and 3 of each rear tandem link.
6. Starting at the front of each platform side rail, install clevises on the bushings bolted to
holes 7, 8, 9, 10, 11, 13, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, and 27. Install triple
clevises on holes 5 and 28 according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-
MMO-010/TO 13C7-1-5.
7. Starting at the front of the platform, number the clevises 1 through 26 on the right side, and
1A through 26A on the left side.
8. Label the tiedown rings according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-
MMO-010/TO 13C7-1-5.
Note. Refer to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 (Table 2-
2) when adding additional parachutes for heavier loads for the suspension/tandem link positioning.
Figure 5-41. Platform Prepared
5-74
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
PLACING LASHINGS ON PLATFORM
5-51. Use twelve 15-foot lashings according to 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-
010/TO 13C7-1-5, and position the lashings on the platform as shown in Figure 5-42.
2
B7
B6
B5
B4
B3
B2
1
A7
A6
A5
A4
A3
A2
1 Pass the free end of a 15-foot tiedown lashing through tiedown ring A2 and through its own
D-ring. Pass the free end over the right rail. Repeat for tiedown rings A3, A4, A5, A6, and
A7.
2 Pass the free end of a 15-foot tiedown lashing through tiedown ring B2 and through its own
D-ring. Pass the free end over the left rail. Repeat for tiedown rings B3, B4, B5, B6, and B7.
Figure 5-42. Lashings Pre-positioned on Platform
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-75
Chapter 5
CONSTRUCTING AND FORMING STORAGE BOX COMPONENTS
5-52. Construct the individual components of a storage box as shown in Figures 5-43, 5-44, and 5-45.
Partially assemble the first box for loading as shown in Figure 5-46.
Notes.
1. This drawing is not to scale
2. All dimensions are in inches.
3. Use 8d nails.
1 Cut four 3/4-by 48- by 92-inch pieces of plywood.
2 Nail a 2- by 4- by 85-inch piece of lumber along the top and bottom edges of each of the
four end pieces with 8d nails as shown. Allow the plywood to extend past the lumber 3 ½
inches on each side.
Figure 5-43. Box Ends Constructed
5-76
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
Notes.
1. This drawing is not to scale.
2. All dimensions are in inches.
3. Use 8d nails.
1 Cut four 3/4- by 48- by 90-inch pieces of plywood. Face the finished sides of the plywood up.
2 Make 2- by 3-inch cutouts as shown in each of the four sides. Face the 12-inch cutout to the
right on two pieces, and to the left on the other two.
3 Nail a 2- by 4- by 84 1/2-inch piece of lumber on edge along the top and bottom interior
edges of each of the four sides with 8d nails. Allow the plywood to extend past the lumber 2
3/4 inches on each end at the top. Overhang at the bottom is 2 3/4 inches at the small-
notched end and 3/4 inches at the larger notched end.
4 Cut six pieces of 2- by 4- by 45-inch lumber for each of the four sides. Nail a piece of this
lumber between each of the pieces of lumber placed in step 3 flush with the ends. Space the
four remaining pieces as shown and nail them in place.
Figure 5-44. Box Sides Constructed
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-77
Chapter 5
Notes.
1. This drawing is not to scale.
2. All dimensions are in inches.
3. Use 8d nails.
1 Cut a full sheet of 3/4-inch plywood to 48 by 86 inches. Cut a second sheet to 45 1/2 by 86
inches. Lay them side-by-side to make a piece 86 by 93 1/2 inches.
2 Space three 2- by 4- by 85-inch pieces of lumber evenly across the two pieces of plywood
1/2-inch from the top and bottom. Allow 4 1/4 inches of plywood to overhang on each end
of the lumber. Nail the lumber and the plywood together.
3 Repeat steps 1 and 2 above to make the top for the second box. (Not shown)
Figure 5-45. Top of Boxes Constructed
5-78
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
2
1
REAR
1 Assemble the box on the platform. Fit each end of the box between the sides with the left and
right of each end flush against the inside vertical lumber uprights on the sides.
2 Nail the pieces together with 8d nails through the front side of the box.
3 Be sure that the front box is centered on the platform and that the front edges of the sides of
the box are even with the front edge of the platform. (Not shown)
Figure 5-46. Box Partially Assembled for Loading
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-79
Chapter 5
LOADING AND CLOSING THE BOXES
5-53. Load and close the boxes as described below.
Use the tiedown rings inside the box to secure the load, if necessary.
Use honeycomb, if necessary, to cover the platform inside the box or to fill empty space.
The inside ends of both boxes may be cut out to allow for long items such as lumber or tent poles.
Load the front box. Nail the inside end and top into place as shown in Figure 5-47.
Assemble the front end and sides of the second box as shown in Figure 5-46.
Load the second box and close it as shown in Figure 5-47.
1
3
6”
2
1 After loading the front box, nail the rear end of the box in place. Align the top with the
lumber facing down. Nail the top in place along the edges.
2 Partially assemble the rear box for loading. Place the front end of the box, 6 inches from
the rear end of the front box.
3 Close the rear box as in step 1.
Figure 5-47. Boxes Closed
5-80
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
INSTALLING LASHINGS
5-54. Install the lashings and secure pre-positioned lashings for the boxes as shown in
Figures 5-48 through 5-57.
Notes.
1. Pad the cutouts in the box sides with cellulose wadding. Tape the wadding in place.
2. This load requires lashings over 30 feet in length according to FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5. Lashings must be positioned through
clevises before sections are joined together.
3
4
2
5
1
9
8
7
5
3
Lashing Number
Tiedown Clevis
Instructions
Number
1
3 and 3A
Pass a 30-foot lashing through both clevises and through
the bottom front cutouts. Secure the lashing in the front with
two D-rings and a load binder.
2
8 and 8A
Pass a 45-foot lashing through both clevises and through
the middle front cutouts. Secure the lashing in the front with
two D-rings and a load binder.
3
9 and 9A
Pass a 45-foot lashing through both clevises and through
the upper front cutouts. Secure the lashing in the front with
two D-rings and a load binder.
4
5 and 5A
Pass a 45-foot lashing through both clevises and through
the top rear cutouts. Secure the lashing on the side with two
D-rings and a load binder.
5
7 and 7A
Pass a 45-foot lashing through both clevises and through
the bottom rear cutouts. Secure the lashing on the side with
two D-rings and a load binder.
Figure 5-48. Lashings 1 Through 5 Installed
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-81
Chapter 5
6
8
7
10
6
4
Lashing Number
Tiedown Clevis
Instructions
Number
6
4 and 4A
Pass a 15-foot lashing through each clevis and through its
own D-ring. Secure the lashings on top of the box with two
D-rings and a load binder.
7
6 and 6A
Pass a 15-foot lashing through each clevis and through its
own D-ring. Secure the lashings on top of the box with two
D-rings and a load binder.
8
10 and 10A
Pass a 15-foot lashing through each clevis and through its
own D-ring. Secure the lashings on top of the box with two
D-rings and a load binder.
Figure 5-49. Lashings 6 Through 8 Installed
5-82
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
2
1
3
1 Pass the ends of the pre-positioned lashings in tiedown rings A2 and B2 to the top of the
load. Secure the lashings on top of the load with two D-rings and a load binder.
2 Secure the pre-positioned lashings in tiedown rings A3 and B3 in the same way.
3 Secure the pre-positioned lashings in tiedown rings A4 and B4 in the same way.
Figure 5-50. Pre-positioned Lashings Secured
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-83
Chapter 5
10
9
1A
11
9
1
Lashing Number
Tiedown Clevis
Instructions
Number
9
1 and 11
Pass a 60-foot lashing through clevis 1, through the top
cutout in the left side of the first box and around the left side
of the box. Pass the lashing through the top left cutout on
the rear end of the first box and through clevis 11. Secure
the lashing on the left side with two D-rings and a load
binder.
10
1A and 11A
Pass a 60-foot lashing through clevis 1A, through the top
cutout in the right side of the first box, and around the right
side of the box. Pass the lashing through the top right
cutout on the rear end of the first box and through clevis
11A. Secure the lashing on the right side with two D-rings
and a load binder.
Figure 5-51. Lashings 9 and 10 Installed
5-84
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
11
12
11
2A
12
2
11
Lashing Number
Tiedown Clevis
Instructions
Number
11
2 and 12
Pass a 60-foot lashing through clevis 2, through the bottom
right and middle left cutouts in the front of the first box, and
around the left side of the box. Pass the lashing through the
middle left cutout on the rear end of the first box and
through clevis 12. Secure the lashing on the left side with
two D-rings and a load binder.
12
2A and 12A
Pass a 60-foot lashing through clevis 2A, through the
bottom left and middle right cutouts in the front of the first
box, and around the right side of the box. Pass the lashing
through the middle right cutout on the rear end of the first
box and through clevis 12A. Secure the lashing on the right
side with two D-rings and a load binder
Figure 5-52. Lashings 11 and 12 Installed
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-85
Chapter 5
16
14
15
17
18
13
24
22
21
19
18
17
Lashing Number
Tiedown Clevis
Instructions
Number
13
18 and 18A
Pass a 30-foot lashing through both clevises and through
the middle cutouts on the front of the second box. Secure
the lashing on the side with two D-rings and a load binder.
14
19 and 19A
Pass a 30-foot lashing through both clevises and through
the middle cutouts on the front of the second box. Secure
the lashing on the side with two D-rings and a load binder.
15
21 and 21A
Pass a 45-foot lashing through both clevises and through
the top cutouts on the front of the second box. Secure the
lashing on the side with two D-rings and a load binder.
16
17 and 17A
Pass a 45-foot lashing through both clevises and through
the top rear cutouts. Secure the lashing in the rear with two
D-rings and a load binder.
17
22 and 22A
Pass a 30-foot lashing through both clevises and through
the middle rear cutouts. Secure the lashing in the rear with
two D-rings and a load binder.
18
24 and 24A
Pass a 30-foot lashing through both clevises and through
the bottom rear cutouts. Secure the lashing in the rear with
two D-rings and a load binder.
Figure 5-53. Lashings 13 Through 18 Installed
5-86
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
2
3
1
1 Pass the ends of the pre-positioned lashings in tiedown rings A5 and B5 to the top of the
load. Secure the lashings on top of the load with two D-rings and a load binder.
2 Pass the ends of the pre-positioned lashings in tiedown rings A6 and B6 to the top of the
load. Secure the lashings on top of the load with two D-rings and a load binder.
3 Pass the ends of the pre-positioned lashings in tiedown rings A7 and B7 to the top of the
load. Secure the lashings on top of the load with two D-rings and a load binder.
Figure 5-54. Pre-positioned Lashings Secured
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-87
Chapter 5
22
21
20
19
23
20
16
15
Lashing Number
Tiedown Clevis
Instructions
Number
19
15 and 15A
Pass a 15-foot lashing through each clevis and through its
own D-ring. Secure the lashings on top of the box with two
D-rings and a load binder.
20
16 and 16A
Pass a 15-foot lashing through each clevis and through its
own D-ring. Secure the lashings on top of the box with two
D-rings and a load binder.
21
20 and 20A
Pass a 15-foot lashing through each clevis and through its
own D-ring. Secure the lashings on top of the box with two
D-rings and a load binder.
22
23 and 23A
Pass a 15-foot lashing through each clevis and through its
own D-ring. Secure the lashings on top of the box with two
D-rings and a load binder.
Figure 5-55. Lashings 19 Through 22 Installed
5-88
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
24
25A
23
13
23
25
Lashing Number
Tiedown Clevis
Instructions
Number
23
13 and 25
Pass a 60-foot lashing through clevis 13, through the top
cutout in the left side of the second box and around the left
side of the box. Pass the lashing through the top left cutout
on the rear side of the second box and through clevis 25.
Secure the lashing on the left side with two D-rings and a
load binder.
24
13A and 25A
Pass a 60-foot lashing through clevis 13A, through the top
cutout in the right side of the second box, and around the
right side of the box. Pass the lashing through the top right
cutout on the rear side of the second box and through clevis
25A. Secure the lashing on the right side with two D-rings
and a load binder.
Figure 5-56. Lashings 23 and 24 Installed
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-89
Chapter 5
26
26A
14
25
25
26
Lashing Number
Tiedown Clevis
Instructions
Number
25
14 and 26
Pass a 60-foot lashing through clevis 14, through the middle
cutout in the left side of the second box and around the left
side of the box. Pass the lashing through the left middle
cutout on the rear side of the second box and through clevis
26. Secure the lashing on the left side with two D-rings and
a load binder.
26
14A and 26A
Pass a 60-foot lashing through clevis 14A, through the
middle cutout in the right side of the second box, and
around the right side of the box. Pass the lashing through
the right middle cutout on the rear side of the second box
and through clevis 26A. Secure the lashing on the right side
with two D-rings and a load binder.
Figure 5-57. Lashings 25 and 26 Installed
5-90
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
INSTALLING LOAD COVER, SUSPENSION SLINGS AND
DEADMAN’S TIE
5-55. Install the load cover, suspension slings and deadman’s tie according to FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 and as shown in Figure 5-58.
3
4
1
7
5
6
5
2
1 Cover the rear third of the load with a 60- by 96-inch piece of cloth coated nylon. Secure the cover to
the adjacent lashings with type III nylon cord.
2 Pass one end of a 16-foot (4-loop), type XXVI nylon suspension sling through the bell portion of a
large suspension clevis. Bolt the clevis to the suspension hole of the right front tandem link.
Note. Use (2-loop) slings if the load is under 14,000 pounds.
3 Install on the left front tandem link and the right rear and left rear tandem links a 16-foot (4-loop), type
XXVI nylon suspension sling as in step 2.
4 Raise the slings and install the deadman's tie according to FM 4-20.102/MCRP 4-11.3J/NAVSEA
SS400-AB-MMO-010/TO 13C7-1-5.
5 Pad the suspension slings with felt tied and taped in place 36 inches above the suspension clevises
to 8 inches above the top of the load. Extend the tape 6 inches beyond the top and bottom of the felt.
6 Tie the front suspension slings together over the top of the load with a single length of type III nylon
cord. Tie the rear suspension slings the same way.
7 Place two 92- by 5 1/2-inch pieces of honeycomb between the two boxes above the top cutouts. Tie
the honeycomb in place using type III nylon cord to convenient places on the load.
Figure 5-58. Load Cover, Suspension Slings, and Deadman’s Tie Installed
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-91
Chapter 5
INSTALLING PARACHUTES
5-56. Consult FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 for the number
of cargo parachutes required for the weight of the load. Four G-11 cargo parachutes are shown here. Install
the cargo parachutes according to FM
4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO
13C7-1-5 and as shown in Figure 5-59.
1
5
2
4
3
25
21
19
1 Install the cargo parachutes at the rear of the load.
2 Tie the front parachute restraint strap to platform bushings 25 and 25A.
3 Tie the center parachute restraint strap to clevises 21 and 21A.
4 Tie the rear parachute restraint strap to clevises 19 and 19A.
5 Install two multicut parachute release straps according to FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
Figure 5-59. Four G-11 Cargo Parachutes Installed
5-92
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
INSTALLING THE RELEASE SYSTEM
5-57. Prepare, attach, and safety an M-2 cargo parachute release according to FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 and as shown in Figure 5-60.
CAUTION
When rigging a single parachute load, ensure the rear parachute release safety
tie is routed under the parachute securing ties.
1
2
3
1 Prepare and install the M-2 cargo parachute release according to FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5. Place the assembly on a 10- by 12-
inch piece of honeycomb in front of the parachutes as shown. Secure the honeycomb to
the load with type III nylon cord.
2 Safety the release to convenient points on the load with type III nylon cord according to FM
4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
3 S-fold and tie any excess suspension slings with one turn of type I, 1/4-inch cotton
webbing.
Figure 5-60. Release System Installed
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-93
Chapter 5
INSTALLING THE EXTRACTION SYSTEM
5-58. Install the extraction system according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-
010/TO 13C7-1-5 and as shown in Figure 5-61.
3
2
D8
1
1 Install the components of the EFTC according to FM 4-20.102/MCRP 4-11.3J/NAVSEA
SS400-AB-MMO-010/TO 13C7-1-5. Use the front mounting holes for the EFTC brackets.
2 Install a 16-foot EFTC cable according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-
AB-MMO-010/TO 13C7-1-5 and safety the cable to tiedown ring D8 with one turn of type I,
1/4-inch cotton webbing.
3 Attach a 12-foot (2-loop) type XXVI nylon sling according to FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 to be used as a deployment line. S-fold
the excess and tie it in two places with type I, 1/4-inch cotton webbing.
Figure 5-61. Extraction System Installed
5-94
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
PLACING EXTRACTION PARACHUTE
5-59. Select the extraction parachute and extraction line needed using the extraction line requirements
table in FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5. Place the extraction
parachute and line on the load for installation in the aircraft.
INSTALLING PROVISIONS FOR EMERGENCY RESTRAINTS
5-60. Select and install the provisions for the emergency aft restraints according to the emergency aft
restraint requirements table in FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-
5.
MARKING RIGGED LOAD
5-61. Mark the rigged load according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-
010/TO 13C7-1-5, and as shown in Figure 5-62. Complete Shipper’s Declaration for Dangerous Goods. If
the load varies from the one shown, the weight, height, CB, and parachute requirements must be
recomputed.
EQUIPMENT REQUIRED
5-62. Use the equipment listed in Table 5-4 to rig this load.
Note. Table does not include materials which may be needed to pad and restrain supplies inside
the boxes.
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-95
Chapter 5
CAUTION
Make the final rigger inspection required by AR 59-4 and FM 4-
20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5
before the load leaves the rigging site.
CB
RIGGED LOAD DATA
Minimum Weight:
5,040 pounds
Maximum Suspended Weight
20,000 pounds
Height
88 inches
Width
108 inches
Overall Length
192 inches
Overhang: Front
0 inches
Rear
0 inches
Center of Balance (from front edge of the platform)
97 inches
Extraction System with 16-foot cable (adds 18 inches to length of platform)
EFTC
Note. Refer to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 (Table 2-
2) when adding additional parachutes for heavier loads for the suspension/tandem link positioning.
Figure 5-62. Mass Supply Boxes Rigged on a 16-Foot, Type V Platform for Low-Velocity
Airdrop
5-96
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Supply Loads on a 16-Foot, Type V Platform for Low-Velocity Airdrop
Table 5-4. Equipment Required for Rigging Mass Supply Boxes on a 16-Foot, Type V
Platform for Low-Velocity Airdrop
National Stock Number
Item
Quantity
8040-00-273-8713
Adhesive, paste, 1-gallon
As required
Clevis, suspension:
4030-00-090-5354
1-inch (large)
5
8305-00-880-8155
Cloth, coated (nylon, type II, green, 60-in)
As required
4020-00-240-2146
Cord, nylon, type III
As required
1670-00-434-5785
Coupling, airdrop, extraction force transfer with
16-foot cable
1
1670-00-360-0328
Cover, clevis, large
4
8135-00-664-6958
Cushioning material, packaging, cellulose wadding
As required
8305-00-191-1101
Felt, ½-inch thick
As required
1670-01-183-2678
Leaf, extraction line (line bag) (add 2 for C-17)
2
Line, extraction, type XXVI nylon webbing:
1670-01-062-6313
60-foot (3-loop), type XXVI
1
1670-01-107-7651
140-foot (3-loop), type XXVI
1
1670-01-062-6313
60-foot (3-loop), type XXVI for C-17 drogue line
1
1670-01-493-6418
Link assembly, two-point:
1
5351-00-010-4659
Nail, steel wire, common 8d
As required
1670-00-753-3928
Pad, energy-dissipating, honeycomb
1 sheet
Parachute:
1670-01-016-7841
Cargo, G-11
4
1670-00-040-8135
Cargo, extraction, 28-foot
1
1670-01-063-3715
Cargo, extraction, 15-foot for C-17
1
Platform, airdrop, type V, 16-foot
1670-00-128-4981
Plywood, ¾- by 48- by 96-inches
12 sheets
1670-01-353-8425
Bracket assembly, EFTC
1
1670-01-162-2372
Bracket assembly, extraction
1
1670-01-162-2376
Clevis assembly
56
1670-01-162-2381
Tandem link
4
1670-01-097-8817
Release, cargo parachute, M-2
1
20 February 2009
FM 4-20.112/TO 13C7-1-8
5-97
Chapter 5
Table 5-4. Equipment Required for Rigging Mass Supply Boxes on a 16-Foot, Type V
Platform for Low-Velocity Airdrop (Continued)
National Stock Number
Item
Quantity
Sling, cargo airdrop:
1670-01-062-6308
12-foot (4-loop), type XXVI nylon webbing
1
1670-01-063-7761
16-foot (2-loop), type XXVI nylon webbing
4
1670-01-062-6313
60-foot (3-loop), type XXVI nylon webbing
4
5340-00-040-8219
Strap parachute release, multicut
2
7501-00-266-5016
Tape, adhesive, 2-inch
As required
7501-00-266-6710
Tape, masking
As required
1670-00-937-0271
Tiedown assembly, 15-foot
86
1670-01-483-8259
Towplate release mechanism (H-block) (C-17)
1
Webbing:
8305-00-268-2411
Cotton, 1/4-inch, type I
As required
Nylon:
8305-00-082-5752
Tubular, 1/2-inch
As required
8305-00-263-3591
Type VIII webbing
As required
5-98
FM 4-20.112/TO 13C7-1-8
20 February 2009
Chapter 6
Rigging Mass Supply Box on a 20-Foot, Type V Platform
for Low-Velocity Airdrop
DESCRIPTION OF LOAD
6-1. Two mass supply boxes are rigged for low-velocity airdrop on a 20-foot, type V airdrop platform.
Loads may include any bulk items of general supply that can be packed into the box without shifting the
load. Each load must weigh at least 6,300 pounds, including parachutes. Refer to FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 for the weight limitations for the number of
parachutes to be used.
PREPARING PLATFORM
6-2. Prepare a 20-foot, type V platform as shown in Figure 6-1.
20 February 2009
FM 4-20.112/TO 13C7-1-8
6-1
Chapter 6
CLEVISES
26A THROUGH 1A
LEFT
FRONT
REAR
RIGHT
CLEVISES
26 THROUGH 1
Step:
1. Inspect, or assemble and inspect, a 20-foot, type V platform as outlined in TM 10-1670-268-
20&P/TO 13C7-52-22.
2. Install a suspension link in holes 6, 7, and 8 on each platform side rail. Face the flat end of
the link to the front of the platform.
3. Install a suspension link in holes 33, 34, and 35 on each platform side rail. Face the flat end
of the link to the rear of the platform.
4. Install a tandem link to the front of each platform side rail using holes 1, 2, and 3.
5. Install clevises on bushings 1 and 2 on each front tandem link.
6. Install clevises on bushings 1 and 3 on the first suspension link on each side.
7. Install clevises on bushings 2, 3, and 4 on the second suspension link on each side.
8. Starting at the front of the right and left platform side rail, install clevises on the bushings
bolted to holes 5, 10, 11, 12, 13, 14, 17, 19, 20, 21, 22, 25, 28, 29, 30, 31, 37, 39, and 40.
9. Starting at the front of the platform, number the clevises 1 through 26 on the right side, and
1A through 26A on the left side.
10. Label the tiedown rings according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-
MMO-010/TO 13C7-1-5.
Note. Refer to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 (Table 2-
2) when adding additional parachutes for heavier loads for the suspension/tandem link positioning.
Figure 6-1. Platform Prepared
6-2
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Mass Supply Box on a 20-Foot, Type V Platform for Low-Velocity Airdrop
PLACING LASHINGS ON PLATFORM
6-3. Pre-position fourteen 15-foot lashings through the tiedown rings on the platform according to FM 4-
20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 and as shown in Figure 6-2.
2
B5
B4
B3
B2
B9
B8
B7
A9
A8
A7
A5
A4
A3
A2
1
1 Pass the free end of a 15-foot tiedown lashing through tiedown ring A2 and through its own
D-ring. Pass the free end over the right rail. Repeat for tiedown rings A3, A4, A5, A7, A8, and
A9.
2 Pass the free end of a 15-foot tiedown lashing through tiedown ring B2 and through its own
D-ring. Pass the free end over the left rail. Repeat for tiedown rings B3, B4, B5, B7, B8 and
B9.
Figure 6-2. Lashings Pre-positioned on Platform
20 February 2009
FM 4-20.112/TO 13C7-1-8
6-3
Chapter 6
CONSTRUCTING AND FORMING STORAGE BOX COMPONENTS
6-4. Construct the individual components of a storage box as shown in Figures 6-3 through 6-5. Partially
assemble the first box for loading as shown in Figure 6-6.
Notes.
1. This drawing is not to scale.
2. All dimensions are in inches.
3. Use 8d nails.
1 Cut four 3/4- by 48- by 92-inch pieces of plywood.
2 Nail a 2- by 4- by 85-inch piece of lumber along the top and bottom edges of each of the
four end pieces with 8d nails as shown. Allow the plywood to extend past the lumber 3 ½
inches on each side.
Figure 6-3. Box Ends Constructed
6-4
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Mass Supply Box on a 20-Foot, Type V Platform for Low-Velocity Airdrop
Notes.
1. This drawing is not to scale.
2. All dimensions are in inches.
3. Use 8d nails.
1 Build a frame of 2- by 4-inch lumber as shown for each of the four box sides required.
Space the upright pieces exactly as shown. Spacing is measured on center, except the
ends.
2 Lay a full 3/4- by 48- by 96-inch sheet of plywood and a 3/4- by 16- by 48-inch piece of
plywood, unfinished side down, over the frame made in step 1 so that the joint between the
pieces is centered over the second upright from the left. Nail the plywood to the frame so
that the edges are flush with the top and bottom of the frame and the plywood extends past
the frame 2 3/4 inches on each end.
3 Make 2- by 3-inch cutouts as shown in each of the four sides. Face the 12-inch cutout to
the right on two of the sides, and to the left on the other two.
Figure 6-4. Box Sides Constructed
20 February 2009
FM 4-20.112/TO 13C7-1-8
6-5
Chapter 6
Notes.
1. This drawing is not to scale.
2. All dimensions are in inches.
3. Use 8d nails.
1 Cut two 3/4- by 48- by 93 1/2-inch pieces of plywood. In addition, cut a 3/4- by 12- by 93
1/2-inch piece of plywood.
2 Lay the pieces of plywood cut in step 1 together, finished side up, as shown.
3 Space four 2- by 4- by 85-inch pieces of lumber flat side down under the plywood as
shown. Nail the plywood to the lumber.
4 Repeat steps 1 through 3 to make the top for the second box. (Not shown)
Figure 6-5.Tops of Boxes Constructed
6-6
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Mass Supply Box on a 20-Foot, Type V Platform for Low-Velocity Airdrop
FRONT
RIGHT
1
2
RIGHT
FRONT
1
3
1 Assemble the box on the platform. Fit each end of the box between the sides with the left
and right of each end flush against the inside vertical lumber uprights on the sides.
2 Nail the pieces together with 8d nails through the ends of the box into the vertical lumber
pieces in the sides.
3 Make sure that the front end of the box is centered and is 9 inches from the front edge of
the platform.
Figure 6-6. Box Partially Assembled for Loading
20 February 2009
FM 4-20.112/TO 13C7-1-8
6-7
Chapter 6
LOADING AND CLOSING THE BOXES
6-5. Load and close the boxes as described below.
Use the tiedown rings inside the box to secure the load, if necessary.
Use honeycomb, if necessary, to cover the platform inside the box or to fill empty space.
The inside ends of both boxes may be cut out to allow for long items such as lumber or tent poles.
Assemble and load the second box. Allow 6 inches between the ends of the two boxes.
Close both boxes as shown in Figure 6-7.
INSTALLING LASHINGS
6-6.
Install the lashings and secure pre-positioned lashings as shown in Figures 6-8 through 6-15.
Notes.
1. Pad the cutouts in the box sides with cellulose wadding. Tape the wadding in place.
2. This load requires lashings over 30 feet in length according to FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5. Lashings must be positioned through
clevises before sections are joined together.
2
1
1 Align the box tops with the lumber facing down.
2 Nail the tops to the boxes with 8d nails.
Figure 6-7. Boxes Closed
6-8
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging Mass Supply Box on a 20-Foot, Type V Platform for Low-Velocity Airdrop
3
5
9
8
2
4
6
7
11
9
6
3
1
Pass a 15-foot lashing through clevis 3 and through its own D-ring. Do the same for
clevises 3A, 6, 6A, 9, 9A, 11, and 11A.
2
Secure the pre-positioned lashing in tiedown ring B2 to the lashing in clevis 3 on top of the
box with two D-rings and a load binder.
3
Secure the pre-positioned lashing in tiedown ring A2 to the lashing in clevis 3A on top of
the box with two D-rings and a load binder.
4
Secure the pre-positioned lashing in tiedown ring B3 to the lashing in clevis 6 on top of the
box with two D-rings and a load binder.
5
Secure the pre-positioned lashing in tiedown ring A3 to the lashing in clevis 6A on top of
the box with two D-rings and a load binder.
6
Secure the pre-positioned lashing in tiedown ring B4 to the lashing in clevis 9 on top of the
box with two D-rings and a load binder.
7
Secure the pre-positioned lashing in tiedown ring A4 to the lashing in clevis 9A on top of
the box with two D-rings and a load binder.
8
Secure the pre-positioned lashing in tiedown ring B5 to the lashing in clevis 11 on top of
the box with two D-rings and a load binder.
9
Secure the pre-positioned lashing in tiedown ring A5 to the lashing in clevis 11A on top of
the box with two D-rings and a load binder.
Figure 6-8. Pre-positioned Lashings Secured to Lashings on Platform Rails
20 February 2009
FM 4-20.112/TO 13C7-1-8
6-9
Chapter 6
3
2
1
3
5
2
4
1
10
8
7
5
4
Lashing Number
Tiedown Clevis
Instructions
Number
1
4 and 4A
Pass a 30-foot lashing through both clevises and through
the bottom front cutouts. Secure the lashing in the front with
two D-rings and a load binder.
2
5 and 5A
Pass a 30-foot lashing through both clevises and through
the middle front cutouts. Secure the lashing in the front with
two D-rings and a load binder.
3
8 and 8A
Pass a 45-foot lashing through both clevises and through
the top front cutouts. Secure the lashing in the front with two
D-rings and a load binder.
4
10 and 10A
Pass a 45-foot lashing through both clevises and through
the middle cutouts on the rear side of the first box. Secure
the lashing on the side with two D-rings and a load binder.
5
7 and 7A
Pass a 45-foot lashing through both clevises and through
the top cutouts on the rear side of the first box. Secure the
lashing on the side with two D-rings and a load binder.
Figure 6-9. Lashings 1 Through 5 Installed
6-10
FM 4-20.112/TO 13C7-1-8
20 February 2009

 

 

 

 

 

 

 

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