FM 4-20.119 Airdrop of Supplies and Equipment: Rigging 105-Millimeter Howitzers (MAY 2006) - page 7

 

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FM 4-20.119 Airdrop of Supplies and Equipment: Rigging 105-Millimeter Howitzers (MAY 2006) - page 7

 

 

Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
Notes. 1. This drawing is not drawn to scale.
2. All dimensions are given in inches.
FRONT ENDBOARD
TOP
3 X 3
CUTOUTS
PLYWOOD
(3/4 X 24 X 80)
15
BOTTOM
4
3 X 3
REAR ENDBOARD
CUTOUTS
TOP
PLYWOOD
(3/4 X 24 X 96)
15
BOTTOM
4 Cut the front and rear endboads for the first group of ammunition from ¾-inch plywood as
shown.
Figure 5-26. First Group of Ammunition Boxes Lashed to Platform (Continued)
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-49
Chapter 5
5
6
REAR
5 Place the front endboard against the front of the boxes.
6 Place the rear endboard against the rear of the boxes.
Figure 5-26. First Group of Ammunition Boxes Lashed to Platform (Continued)
5-50
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
Note. Lashings used below are all 30-foot lashings. Form 30-foot lashings according to FM 4-
20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
1
2
3
1A
11
9
7
6
1
4
1
5
6
7
9
Lashing
Tiedown
Instructions
Number
Clevis
Number
Pass lashing:
1
1 and 11A
Through clevis 1, through the left upper cutout in the front endboard,
and through clevis 11A. Secure the lashing on the left side.
2
1A and 11
Through clevis 1A, through the right upper cutout in the front
endboard, and through clevis 11. Secure the lashing on the right
side.
3
6 and 6A
Through both clevises and through the lower cutouts in the front
endboard. Secure the lashing in front.
4
7 and 8A
Through both clevises and through the upper cutouts in the rear
endboard. Secure the lashing at the rear.
5
9 and 10A
Through both clevises and through the lower cutouts in the rear
endboard. Secure the lashing at the rear.
Figure 5-26. First Group of Ammunition Boxes Lashed to Platform (Continued)
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-51
Chapter 5
STOWING AND LASHING SECOND GROUP OF AMMUNITION
BOXES
5-20. Stow 30 boxes of ammunition on the platform and lash the boxes together as shown in Figure 5-27.
Lash the ammunition to the platform as shown in Figure 5-28.
5
4
3
1
2
6
1 Center a 96- by 36-inch piece of honeycomb 100 inches from the front edge of the
platform.
2 Form four 30-foot lashings according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-
MMO-010/TO 13C7-1-5. Center two 30-foot lashings 18 inches apart on the honeycomb.
3 Place eight boxes flush over the honeycomb and lashings.
4 Place eight boxes over those boxes placed in step 3.
5 Center a 96- by 36-inch piece of honeycomb against the honeycomb placed in step 1.
6 Place two 30-foot lashings on the honeycomb as described in step 2.
Figure 5-27. Second Group of Ammunition Boxes Stowed
5-52
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
10
9
8
7
7 Place eight boxes flush over the honeycomb and lashings.
8 Place four boxes on the left side of the stack.
9 Place two boxes on the right side of the stack.
10 Place two 24- by 38-inch pieces of honeycomb in the empty space.
Figure 5-27. Second Group of Ammunition Boxes Stowed (Continued)
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-53
Chapter 5
Notes. 1. This drawing is not drawn to scale.
2. All dimensions are given in inches.
13
3 X 3 CUTOUT
15
36
24
15
48
24
24
96
13
11
12
14
11 Place two ¾- by 96- by 36-inch pieces of plywood flush over the first stack of boxes.
12 Secure the lashings placed in step 2 over the load.
13 Make the cutout as shown in two ¾- by 96- by 36-inch pieces of plywood. Place the
plywood over the last row of boxes with the cutout facing the rear.
14 Secure the lashings placed in step 6 on top of the boxes, as far to the left as possible.
15 Construct two endboards of ¾-inch plywood as shown. Place one against each end of the
ammunition stack.
Figure 5-27. Second Group of Ammunition Boxes Stowed (Continued)
5-54
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
Note. Lashings used below are all
30-foot lashings. Form
30-foot lashings according to
FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
1
3
4
20
19
2
17
15
Lashing
Tiedown
Instructions
Number
Clevis
Number
Pass lashing:
1
15 and 16A
Through both clevises and over the top of the boxes. Secure the
lashing on top as far to the left as possible.
2
17 and 19A
Through both clevises and through the cutouts on the front
endboard. Secure the lashing in the front.
3
19 and 21A
Through both clevises and over the top of the boxes. Secure the
lashing on top as far to the left as possible.
4
20 and 22A
Through both clevises and through the cutouts in the rear endboard.
Secure the lashing in the rear.
Figure 5-28. Second Group of Ammunition Boxes Lashed to Platform
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-55
Chapter 5
BUILDING AND PLACING HONEYCOMB STACKS
5-21. Build the honeycomb stacks 1 through 5 for the howitzer as shown in Figure 5-6. Build honeycomb
stack 6 as shown in Figure 5-29. Place stacks as shown in Figure 5-30.
Notes.
1. All measurements are given in inches.
2. These drawings are not drawn to scale.
PLYWOOD
(3/4 X 30 X 6)
PLYWOOD
(3/4 X 21 X 6)
PLYWOOD
(3/4 X 30 X 6)
Stack
Pieces
Width
Length
Material
Instructions
Number
(inches)
(inches)
6
2
24
16
Honeycomb
Glue to form a base
6
30
16
Honeycomb
Glue flush with right edge of base.
1
30
10
Honeycomb
Place honeycomb even with rear edge of
base.
1
30
6
¾-inch
Place plywood flush along rear edge of
plywood
honeycomb placed above.
1
30
6
¾-inch
Place plywood flush on front of base.
plywood
1
21
6
¾-inch
Center plywood on the lower piece of
plywood
plywood.
Figure 5-29. Honeycomb Stacks Prepared
5-56
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
Notes. 1. This drawing is not drawn to scale.
2. All dimensions are given in inches.
STACK
STACK
1
STACK
2
STACK
STACK
3
STACK
6
4
5
Stack Number
Position of Stack on Platform
Note. Stack locations are approximate. Exact placement will vary because
of differences in individual guns. Be sure that the stacks rest solidly on the
platform or on the plywood decking.
1
Place on the plywood decking with the right front corner 28 inches from the
right front corner of the plywood and the left front corner of the stack 4 inches
from the front edge of the plywood.
2
Center the front edge against stack 1.
3
Align on the rear section of plywood decking on a central axis with stacks 1
and 2.
4
Place at the rear of the platform with the right rear corner of the stack 34
inches from the right rail. Let the left side of the stack overhang the rear edge
of the platform from the point at which the extraction bracket meets the rear
edge of the platform.
5
Center in front of the stack 4.
6
Align on the third ammunition stack on a central axis with stacks 4 and 5.
Figure 5-30. Honeycomb Stacks Placed
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-57
Chapter 5
PREPARING HOWITZERS
5-22. Prepare both howitzers as shown in Figures 3-9 through 3-17 and in Figure 5-8. Further prepare the
front howitzer as shown in Figure 5-9 and the rear howitzer as shown in Figure 5-10.
PLACING HOWITZERS ON PLATFORM
5-23. Place the howitzers on the platform as shown in Figure 5-31.
2
1
1 Position the rear howitzer on stacks 4, 5, and 6. The breech assembly must overhang the
rear edge of the platform 17 inches.
2 Position the front howitzer on stacks 1, 2, and 3. The breech assembly must overhang the
front edge of the platform 17 inches.
3 Secure the inside trails of the howitzers together as shown in Figure 5-12.
Figure 5-31. Howitzers Placed on Honeycomb Stacks
5-58
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
LASHING HOWITZERS
5-24. Lash the howitzers to the right side of the platform as shown in Figure 5-32. Lash the howitzers to
the left side of the platform as shown in Figure 5-33.
Note. Do not tighten the lashings until all are installed. Tighten the lashings in pairs on
opposite sides.
2
1
3
4
4
2
12
10
Lashing
Tiedown
Instructions
Number
Clevis
Number
Pass lashing:
1
2
Around wheel hub.
2
4
Around trail, near side.
3
10
Through medium clevis installed under front howitzer, far side.
4
12
Around wheel hub.
Figure 5-32. Lashings on Right Side Installed
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-59
Chapter 5
6
5
7
8
18
16
14
13
Lashing
Tiedown
Instructions
Number
Clevis
Number
Pass lashing:
5
13
Around trail of rear howitzer, near side.
6
14
Through lunette of front howitzer.
7
16
Around trail on far side of front howitzer.
*8
18
Through lunette on rear howitzer.
* 30-foot lashing.
Figure 5-32. Lashings on Right Side Installed (Continued)
5-60
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
11
9
12
10
26
24
23
21
Lashing
Tiedown
Instructions
Number
Clevis
Number
Pass lashing:
9
21
Around saddle of rear howitzer.
10
23
Around saddle of rear howitzer.
11
24
Through lunette, front howitzer.
12
26
Around wheel hub, rear howitzer.
Figure 5-32. Lashings on Right Side Installed (Continued)
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-61
Chapter 5
4
2
1
3
2A
4A
7A
12A
Lashing
Tiedown
Instructions
Number
Clevis
Number
Pass lashing:
1
2A
Around saddle of front howitzer.
2
4A
Around wheel hub of front howitzer.
3
7A
Through lunette of rear howitzer.
*4
12A
Around saddle of front howitzer.
* 30-foot lashing.
Figure 5-33. Lashings on Left Side Installed
5-62
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
7
5
6
8
13A
14A
15A
17A
Lashing
Tiedown
Instructions
Number
Clevis
Number
Pass lashing:
*5
13A
Around trail on far side of front howitzer.
6
14A
Around trail on far side of rear howitzer.
*7
15A
Through medium clevis installed under front howitzer, near side.
8
17A
Around trail on far side of rear howitzer.
* 30-foot lashing.
Figure 5-33. Lashings on Left Side Installed (Continued)
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-63
Chapter 5
9
10
18A
20A
Lashing
Tiedown
Instructions
Number
Clevis
Number
Pass lashing:
9
18A
Through lunette, rear howitzer.
10
20A
Around trail on far side of rear howitzer.
Figure 5-33. Lashings on Left Side Installed (Continued)
5-64
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
14
11
13
12
23A
24A
26A
28A
Lashing
Tiedown
Instructions
Number
Clevis
Number
Pass lashing:
11
23A
Around wheel hub.
12
24A
Around trail on far side of rear howitzer.
13
26A
Around saddle.
14
28A
Around wheel hub.
Figure 5-33. Lashings on Left Side Installed (Continued)
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-65
Chapter 5
COVERING THE LOAD
5-25. Install protective honeycomb and cloth cover as shown in Figure 5-34.
3
2
1
1 Bend a 12- by 40-inch piece of honeycomb over the sight mount of each howitzer. Tape
the edges of the honeycomb and secure in place with type III nylon cord.
2 Bend a 24- by 96-inch piece of honeycomb over the rear howitzer cylinders. Tape the
edges of the honeycomb and secure in place with a length of type III nylon cord tied to the
wheel hub.
3 Center two 36- by 96-inch pieces of honeycomb end-to-end lengthwise over the length of
the front howitzer. Bend the honeycomb over the howitzer, tape the sides of the
honeycomb and tie it to convenient points on the load with type III nylon cord.
Figure 5-34. Howitzer Covered
5-66
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
4
5
4 Tie two 96- by 36-inch pieces of honeycomb to the left side of the load, covering the gun
tube of the rear howitzer and the trail of the front howitzer. Tape the edges of the
honeycomb and tie the honeycomb to the howitzer trails with type III nylon cord.
5 Cover the load with a 10- by 16-foot piece of cotton duck cloth. Tie the cloth to convenient
points on the load with type III nylon cord.
Figure 5-34. Howitzer Covered (Continued)
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-67
Chapter 5
INSTALLING SUSPENSION SLINGS
5-26. Install and safety the suspension slings according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-
AB-MMO-010/TO 13C7-1-5 and as shown in Figure 5-35.
4
2
1
3
1 Pass an 11-foot (4-loop), type XXVI nylon webbing sling through a 3 ¾-inch, two-point link.
Place both end loops of the sling in the bell portion of a large clevis. Bolt the clevis to the
right rear suspension link. Repeat for left side.
2 Attach an 11-foot (4-loop), type XXVI nylon webbing sling through each of the 3 ¾-inch
two-point links installed in step 1.
3 Attach a 16-foot (4-loop), type XXVI nylon webbing sling to each front suspension link with
a large suspension clevis.
4 Extend the slings and install the deadman’s tie 6 to 8 inches above the highest point of the
load.
Figure 5-35. Suspension Slings Installed and Safetied
5-68
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
7
5
5
5 Tie the two 3 ¾-inch two-point links to one another with a length of type III nylon cord.
6 Safety the right rear suspension sling to the lunette of the front howitzer below the link
assembly with type III nylon cord. Safety the left rear link assembly to the spade of the
front howitzer (left side not shown).
7 Safety the right front suspension sling to the nearest howitzer trail with type III nylon cord.
Safety the left front suspension sling to the lunette of the rear howitzer (left side not
shown).
Figure 5-35. Suspension Slings Installed and Safetied (Continued)
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-69
Chapter 5
PREPARING STOWAGE PLATFORM AND STOWING CARGO
PARACHUTES
5-27. Prepare the parachute stowage platform as shown in Figure 5-16. Prepare the left parachute stowage
platform support as shown in Figure 5-17. Prepare the right parachute stowage platform support as shown
in Figure 5-18. Assemble the stowage platform as shown in Figure 5-19. Stow four G-11 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 5-36.
5
3
1
1
6
3
7
22
25
1 Lash the parachute stowage platform to clevis 22 through the center and rear holes on the
right side.
2 Lash the parachute stowage platform to clevis 25A through the center and rear holes on
the left side (not shown).
3 Lash the parachute stowage platform to clevis 25 through the center and front holes on the
right side.
4 Lash the parachute stowage platform to clevis 27A through the center and front holes on
the left side (not shown).
5 Prepare and install four G-11 cargo parachutes.
6 Tie the front parachute restraint strap to the first bushing on each rear suspension link.
7 Tie the rear parachute restraint strap to the first bushing after the suspension link on each
rail.
Figure 5-36. Cargo Parachutes Stowed
5-70
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
INSTALLING EXTRACTION SYSTEM
5-28. Install the EFTC extraction system on the 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 5-37. If applicable install the EPJS according
to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
3
1
2
1 Install the EFTC mounting brackets, actuator, and a 20-foot cable as shown in Figure 5-21.
2 Install the latch assembly and latch assembly adapter to the extraction bracket according
to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
3 Install a 12-foot (2-loop), type XXVI nylon webbing deployment line. S-fold the slack and
tie the folds with type I, ¼-inch cotton webbing.
Figure 5-37. EFTC Installed
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-71
Chapter 5
INSTALLING RELEASE SYSTEM
5-29. Prepare and install 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 5-22.
INSTALLING PROVISIONS FOR EMERGENCY RESTRAINTS
5-30. Install provisions for emergency restraints on the front of the platform according to FM
4-
20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
PLACING EXTRACTION PARACHUTES
5-31. 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. Rig the extraction
line in an extraction line bag according to TM 10-1670-286-20/TO13C5-2-41. Place the extraction
parachute and extraction line on the load for installation in the aircraft.
MARKING RIGGED LOAD
5-32. Marked 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 5-38. Complete Shipper’s Declaration for Dangerous Goods
according to AFMAN 24-204(I)/TM 38-250. If the load varies from the one shown, the weight, height,
CB, tip-off curve, and parachute requirements must be recomputed.
5-72
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
CAUTION
Make the final rigger inspection required by 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
19,320 pounds
Maximum load allowed
20,000 pounds
Height
99 ½ inches
Width
108 inches
Overall Length
274 inches
Overhang: Front
17 inches
Rear (EFTC)
18 inches
Rear (EPJS)
30 inches
Center of Balance (from front edge of platform)
112 inches
Figure 5-38. Two M119 Howitzers with Sixty-Three Boxes of Ammunition Rigged for Low-
Velocity Airdrop on a Type V Platform
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-73
Chapter 5
EQUIPMENT REQUIRED
5-33. Use the equipment listed in Table 5-2 to rig the load shown.
Table 5-2. Equipment Required for Rigging Two M119 Howitzers with Sixty-Three Boxes of
Ammunition for Low-Velocity Airdrop on a Type V Platform
National Stock Number
Item
Quantity
8040-00-273-8713
Adhesive, paste, 1-gallon
As required
Clevis, suspension:
4030-00-678-8562
3/4-inch (medium) emergency restraint
2
4030-00-090-5354
1-inch (large)
7
8305-00-184-2034
Cloth, cotton duck, 60-inch
As required
4020-00-246-0688
Cord, nylon, type III
As required
Coupling, airdrop, extraction force transfer with
1
1670-00-434-5787
20-foot cable
1670-00-360-0328
Cover, clevis, large
2
8135-00-664-6958
Cushioning material, packaging, cellulose wadding
As required
8305-00-191-1101
Felt, ½-inch
As required
1670-01-183-2678
Leaf, extraction line
2
1670-01-064-4452
Line, drogue, 60-foot (1-loop), type XXVI nylon webbing
1
Line, extraction, type XXVI nylon webbing:
1670-01-062-6313
60-foot (3-loop)
1
Or
1670-01-107-7651
140-foot (3-loop)
1
Link assembly, two-point:
1670-01-493-6418
3 3/4-inch
23
1670-01-493-6420
5 1/2 -inch
2
Lumber:
5510-00-220-6146
2- by 4-inch
As required
5510-00-220-6196
2- by 6-inch
As required
5510-00-220-6246
2- by 8-inch
As required
Nail, steel wire, common:
5315-00-010-4659
8d
As required
5315-00-164-5121
20d
As required
1670-00-753-3928
Pad, energy-dissipating, honeycomb
31 sheets
Parachute:
1670-01-016-7841
Cargo, G-11
4
1670-00-040-8135
Cargo, extraction, 28-foot
1
1670-01-063-3715
Drogue, 15-foot
1
5-74
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
Table 5-2. Equipment Required for Rigging Two M119 Howitzers with Sixty-Three Boxes of
Ammunition for Low-Velocity Airdrop on a Type V Platform (Continued)
National Stock Number
Item
Quantity
Platform, airdrop, type V, 20-foot
1670-01-353-8425
Bracket assembly, coupling
1
1670-01-353-8424
Bracket assembly, extraction
1
1670-01-162-2372
Clevis assembly
58
1670-01-247-2389
Suspension link
4
1670-01-162-2381
Tandem link
2
Plywood,
5530-00-129-7777
½-inch
As required
5530-00-128-4981
¾-inch
As required
1670-01-097-8817
Release, cargo parachute, M-2
1
Sling, cargo airdrop:
For deployment line:
1670-01-062-6303
12-foot (2-loop), type XXVI nylon webbing
1
For lifting:
1670-01-063-7760
11-foot (2-loop), type XXVI nylon webbing
3
For riser extension:
1670-01-062-6302
20-foot (2-loop), type XXVI nylon webbing
20
For suspension:
1670-01-062-6301
11-foot (2-loop), type XXVI nylon webbing
4
1670-01-063-7761
16-foot (2-loop), type XXVI nylon webbing
2
1670-00-040-8219
Strap, parachute release, multicut
2
7515-00-266-5016
Tape, adhesive, 2-in
As required
1670-00-937-0271
Tie-down assembly, 15-ft
94
1670-01-483-8259
Tow release mechanism (H-block for 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
10 May 2006
FM 4-20.119/TO 13C7-10-31
5-75
Chapter 5
SECTION III - RIGGING HOWITZERS WITH TWO 81-MILLIMETER MORTARS
DESCRIPTION OF LOAD
5-34. Two M119, 105-millimeter howitzers are rigged on a 20-foot type V platform with an accompanying
load of 68 boxes of ammunition, 21 cans of fuzes (when required), and two 81-MM mortars. This load
requires five G-11 cargo parachutes.
PREPARING PLATFORM
5-35. Prepare a 20-foot, type V airdrop platform as described in paragraph 5-2 and as shown in Figure 5-1.
STOWING AND LASHING FIRST GROUP OF AMMUNITION BOXES
5-36. Stow and lash the first group of ammunition boxes as shown in Figures 5-2 and 5-3.
PACKAGING AND SECURING MORTAR COMPONENTS
5-37. Build the wooden box for the mortar components as shown in Figure 5-39. Pack the mortar
components in the box and close the box as shown in Figure 5-40. Place the mortar ammunition on the
load and secure the mortar package as shown in Figure 5-41.
NOTICE OF EXCEPTION
Exception to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-
010/TO 13C7-1-5 is granted to rig ammunition with one layer of
honeycomb.
Note. The mortar and ammunition are rigged as part of the second ammunition stack. See
Section I, Paragraph 5-4 of this chapter for procedures for rigging the remainder of the second
ammunition stack.
RIGGING HOWITZER
5-38. Complete the rigging of this load as show in Section I of this chapter.
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Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
Notes. 1. This drawing is not drawn to scale.
2. All dimensions are given in inches.
70
¾
1
14 ½
1 ½
11 ¾
23 ½
35
36
2
14 ½
70
¾
¾
3
37 ½
11 ¾
23 ½
35
1 Build two box sides of ¾- by 70- by 14 ½-inch plywood. Nail 2- by 4- by 13-inch piece of
lumber to the sides spaced as shown.
2 Cut two box ends of ¾- by 36- by 14 ½-inch plywood.
3 Cut box bottom and top of ¾- by 70- by 37 ½-inch plywood. Nail 2- by 4- by 36-inch piece of
lumber to the top spaced as shown.
4 Nail the box ends to the sides through the lumber at the box corners. Nail the box bottom to
the sides and ends (not shown).
Figure 5-39. Box for Mortars Constructed
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5-77
Chapter 5
5
5 Route a 15-foot lashing through tie-down rings A5 and A6. Route a 15-foot lashing
through tie down rings B5 and B6.
Figure 5-39. Box for Mortars Constructed (Continued)
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Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
8
7
6
6 Place a 96- by 36-inch piece of honeycomb against the second endboard.
7 Form two 30-foot lashing according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-
MMO-010/TO 13C7-1-5. Center a 30-foot lashing 8 inches from the rear edge of the
honeycomb. Center a 30-foot lashing 10 inches to the front of the first lashing.
8 Center the box over the lashings and honeycomb.
Figure 5-39. Box for Mortars Constructed (Continued)
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5-79
Chapter 5
1
2
3
3
4
5
1 Place the two mortar base plates in the bottom of the box upside down.
2 Wrap the mortar tubes in cellulose wadding, tape in place and lay them together beside the
base plates.
3 Pad the base plates with cellulose wadding and lay the bipods and mounts over them.
4 Pad the sight boxes with cellulose wadding, tape in place and lay them over the tubes.
5 Place the aiming pole bags over the padded base plates.
Figure 5-40. Mortar Components Placed in Box
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Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
6
7
6 Fill in empty space with additional equipment or honeycomb cut to fit.
7 Nail the top onto the box. Secure the lashings pre-positioned in Figure 5-39, step 4 over
the box.
Figure 5-40. Mortar Components Placed in Box (Continued)
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5-81
Chapter 5
6
1
4
6
5
3
7
18
16
1 Place a 70- by 35-inch piece of honeycomb on the mortar box.
2 Place a 15-foot lashing 6 inches from each end of the mortar box in a front-to-rear
direction. Extend the lashing pre-positioned in Figure 5-39, step 6 to the right side of the
platform (not shown).
3 Place three boxes of mortar ammunition at each end of the mortar box flush with the rear
edge of the box.
4 Secure the lashings pre-positioned in Figure 5-39, step 6 on top of the mortar box and
honeycomb cover.
5 Route a 30-foot lashing through clevises 16 and 16A and over the top of the mortar box.
Secure the lashing on top of the box.
6 Secure the lashings pre-positioned in step 2 above on top of the boxes of mortar
ammunition.
7 Secure the lashing pre-positioned through clevis 19A and around the second endboard to
clevis 18. Secure the lashing on the right side.
Figure 5-41. Mortar Ammunition Placed and Secured
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Rigging Two M119 Howitzers for Low-Velocity Airdrop on Type V Platform
MARKING RIGGED LOAD
5-39. Marked 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 5-42. Complete Shipper’s Declaration for Dangerous Goods
according to AFJMAN 24-204/TM 38-250. If the load varies from the one shown, the weight, height, CB,
tip-off curve, and parachute requirements must be recomputed.
EQUIPMENT REQUIRED
5-40. Use the equipment listed in Table 5-1 to rig the load shown with the addition of six tie-down
assemblies and the material need for the mortar box.
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5-83
Chapter 5
CAUTION
Make the final rigger inspection required by 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
21,940 pounds
Maximum load allowed
25,000 pounds
Height
98 inches
Width
108 inches
Overall Length
274 inches
Overhang: Front
17 inches
Rear (EFTC)
18 inches
Rear (EPJS)
30 inches
Center of Balance (from front edge of platform)
110 inches
Figure 5-42. Two M119 Howitzers Rigged with Two 81-Millimeter Mortars for Low-Velocity
Airdrop on a Type V Platform
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Chapter 6
Rigging M101A1 Howitzer for Low-Velocity Airdrop on
Type V Platform
DESCRIPTION OF LOAD
6-1. The M101A1, 105-millimeter howitzer is rigged on a 16-foot, type V airdrop platform with two G-
11 cargo parachutes. This load includes an accompanying load of 21 boxes of ammunition. The
accompanying load must weigh at least 2,000 pounds, but no more than 2,400 pounds. The howitzer is
rigged for low-velocity airdrop from a C-130 or C-17 aircraft.
PREPARING PLATFORM
6-2. Prepare a 16-foot, type V airdrop platform as described below.
Inspecting platform. Inspect, or assemble and inspect, the platform as outlined in TM 10-1670-
268-20&P/TO 13C7-52-22.
Installing tandem links. Install a tandem link on the front of each rail 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-
1.
Installing and numbering clevises. Bolt and number 36 clevis assemblies 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-
1.
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6-1
Chapter 6
Notes.
1. The nose bumper may or may not be installed.
2. Measurements given in this chapter are from the front edge of the platform, NOT from the front
edge of the nose bumper.
CLEVISES
18A THROUGH 1 A
LEFT
REAR
FRONT
RIGHT
CLEVISES
18 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 each platform side rail using holes 1, 2, and 3.
3. Install a tandem link to each platform side rail using holes 30, 31, and 32.
4. Install a clevis on bushings 2 and 3 of each front tandem link.
5. Install a clevis on bushings 1, 2 and 3 of each rear tandem link.
6. Starting at the front of each platform side rail, install clevises on the bushing bolted on
holes 9, 19, 21, 22, 23, 24, 25, 26, 27, 28, and 29. Reverse the clevises on holes 22 and
29 and install two additional clevises on each.
7. Starting at the front of the platform, number the clevises 1 through 18 on the right side and
1A through 18A on the left side.
8. Label the tie-down rings according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-
MMO-010/TO 13C7-1-5.
Figure 6-1. Platform Prepared
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Rigging M101A1 Howitzer for Low-Velocity Airdrop on Type V Platform
BUILDING AND PLACING HONEYCOMB STACKS
6-3. Build the honeycomb stacks as shown in Figure 6-2. Place the stacks on the platform as shown in
Figure 6-3.
STACK 1
STACK 2
Stack
Pieces
Width
Length
Material
Instructions
Number
(inches)
(inches)
1
2
84
36
Honeycomb
Glue to form base.
6
36
18
Honeycomb
Center and glue honeycomb on the
base.
2
1
84
36
Honeycomb
Form a base.
5
36
18
Honeycomb
Center and glue 14 inches from the
front edge of the base.
Figure 6-2. Honeycomb Stacks Prepared
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6-3
Chapter 6
Notes. 1. All measurements are given in inches.
2. This drawing is not drawn to scale.
83
30
STACK 2
STACK 1
Stack Number
Position of Stack on Platform
Place stack:
1
Centered 30 inches from front edge of platform.
2
Centered 83 inches from stack 1.
Figure 6-3. Honeycomb Stacks Positioned
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