FM 4-20.112 AIRDROP OF SUPPLIES AND EQUIPMENT: RIGGING TYPICAL SUPPLY LOADS (February 2009) - page 8

 

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FM 4-20.112 AIRDROP OF SUPPLIES AND EQUIPMENT: RIGGING TYPICAL SUPPLY LOADS (February 2009) - page 8

 

 

Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
7
3
4
6
7
5
3 Route the pre-positioned lashing from tie-down ring A2 over the top of the right stack of 155-mm
projectiles at the front of the load. Route the pre-positioned lashing from tie-down ring A3 over the top
of the right stack of 155-mm projectiles at the rear of the load. Secure the lashings on top using two
D-rings and a loadbinder.
4 Route the pre-positioned lashing from tie-down ring B2 over the top of the left stack of 155-mm
projectiles at the front of the load. Route the pre-positioned lashing from tie-down ring B3 over the top
of the left stack of 155-mm projectiles at the rear of the load. Secure the lashings on top using two D-
rings and a loadbinder.
5 Pad the loadbinders with felt. Secure the felt using a length of type III nylon cord.
6 Place a 15-foot lashing 8 inches from each end of the honeycomb stack in a left to right direction
according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
7 Place a 15-foot lashing 24 inches from each end of the honeycomb stack in a left to right direction
according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
Figure 8-5. Ammunition Positioned and Secured (Continued)
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-9
Chapter 8
FRONT
13
12
12
11
10
10
9
8
8
REAR
Note. When positioning the (M231) powder canisters ensure the edge of the canisters are flush
with the front and rear edge of the honeycomb stack.
8 Position four (M231) powder canisters on top of the two front pre-positioned lashings on
top of the base stack with the canister openings facing toward the rear edge of the platform
and the other end of the canisters flush with front edge of the honeycomb stack.
9 Place a 30- by 27-inch piece of honeycomb over the four canisters.
10 Place a second layer of four (M231) powder canisters on top of the 30- by 27-inch piece of
honeycomb.
11 Place a second layer of 30- by 27-inch piece of honeycomb over the second layer of
canisters.
12 Place a third layer of four (M231) powder canisters on top of the 30- by 27-inch piece of
honeycomb.
13 Secure the pre-positioned lashings over the canisters. Pad between the canisters and load
binders with a piece of felt.
Figure 8-5. Ammunition Positioned and Secured (Continued)
8-10
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
14
16
15
14 Cut two 30- by 24-inch pieces of honeycomb and two 17 1/2- by 24-inch pieces of
honeycomb. Position them in front of the rear stack of canisters to form a box. Ensure the
two 17 1/2- by 24-inch pieces of honeycomb are flush against the inside edge of the 155-
mm projectiles.
15 Place six fuse cans in the box formed in the previous step.
16 Cut and position six 17 1/2- by 24-inch pieces of honeycomb over the fuse cans to fill the
empty space.
Figure 8-5. Ammunition Positioned and Secured (Continued)
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-11
Chapter 8
22
FRONT
21
21
20
19
19
18
17
17
REAR
17 Position four (M231) powder canisters on top of the two rear pre-positioned lashings on top
of the base stack with the canister openings facing toward the front edge of the platform
and other side of the canisters flush with rear edge of the honeycomb stack.
18 Place a 30- by 27-inch piece of honeycomb over the four canisters.
19 Place a second layer of four (M231) powder canisters on top of the 30- by 27-inch piece of
honeycomb.
20 Place a second layer of 30- by 27-inch honeycomb over the second layer of canisters.
21 Place a third layer of four (M231) powder canisters on top of the 30- by 27-inch piece of
honeycomb.
22 Secure the pre-positioned lashings over the canisters. Pad between the canisters and load
binders with a piece of felt.
Figure 8-5. Ammunition Positioned and Secured (Continued)
8-12
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
23
23 Cut and center a 30- by 88-inch piece of honeycomb over the canisters and fuse boxes.
Tape the edges of the honeycomb and secure to convenient points on the load using type
III nylon cord.
Figure 8-5. Ammunition Positioned and Secured (Continued)
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-13
Chapter 8
CONSTRUCTING THE FRONT ENDBOARD
8-7. Construct the front endboard as shown in Figure 8-6.
Notes.
1. This drawing is not to scale.
2. All dimensions are in inches.
3. Make cutouts 2- by 2 inches.
TOP
6
6
8
6
38
2 each, ¾-inch plywood
6
12
60
BOTTOM
Step:
1. Cut two 3/4- by 60- by 38-inch pieces of plywood.
2. Make 2- by 2-inch cutouts as shown.
3. Nail two pieces of plywood flush together with 6d nails to make the front endboards.
4. Pad the cutouts with cellulose wadding and secure using 2-inch masking tape.
Figure 8-6. Front Endboard Constructed
8-14
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
CONSTRUCTING THE REAR ENDBOARD
8-8. Construct the rear endboard as shown in Figure 8-7.
Notes.
1. This drawing is not to scale.
2. All dimensions are in inches.
3. Make cutouts 2- by 2 inches.
6
6
TOP
8
6
38
2 each, ¾-inch plywood
6
12
25
10
25
4
60
BOTTOM
Step:
1. Cut two 3/4- by 60- by 38-inch pieces of plywood.
2. Make 2- by 2-inch cutouts as shown.
3. Nail two pieces of plywood flush together with 6d nails to make the rear endboards.
4. Pad the cutouts with cellulose wadding and secure using 2-inch masking tape.
Figure 8-7. Rear Endboard Constructed
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-15
Chapter 8
LASHING THE AMMUNITION STACK AND THE ENDBOARDS
8-9. Lash the ammunition stack and the endboards according to FM 4-20.102/MCRP 4-11.3J/NAVSEA
SS400-AB-MMO-010/TO 13C7-1-5 and as shown in Figure 8-8.
Notes.
1. Place an endboard centered at the front and rear of the ammunition stack.
2. When positioning the rear endboards ensure that the 4- by- 10-inch cutout is centered over the
platform extraction bracket and that the nuts and bolts are not covered.
3. Prior to routing the lashings, pad with cellulose and tape all cutouts.
4
2
3
1
A1
B1
B4
C4
FRONT
REAR
Lashing Number
Tiedown Ring
Instructions
Number
1 and 2
A1 to B4
Route the pre-positioned lashing from tie-down ring A1
through the top right edge cutout of the front endboard.
Route the pre-positioned lashing from tie-down ring B4
through the top right edge cutout of the rear endboard.
Secure the lashings on top using two D-rings and a load
binder.
3 and 4
B1 to C4
Route the pre-positioned lashing from tie-down ring B1
through the top left edge cutout of the front endboard.
Route the pre-positioned lashing from tie-down ring C4
through the top left edge cutout of the rear endboard.
Secure the lashings on top using two D-rings and a load
binder.
Figure 8-8. Ammunition Stack and Endboards Lashed
8-16
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
5
6
2A
1A
14
13
8
7
7
2
1
5
Lashing
Clevis
Instructions
Number
Number
5
1 and 14
Route a 15-foot lashing through clevis 1 and through its own D-ring.
Route the lashing through the top left cutout of the front endboard.
Route a 15-foot lashing through clevis 14 and through its own D-
ring. Route the lashing through the top left cutout of the rear
endboard. Secure with a load binder and D-rings on the left side.
6
1A and 14A
Route a 15-foot lashing through clevis 1A and through its own D-
ring. Route the lashing through the top right cutout of the front
endboard. Route a 15-foot lashing through clevis 14A and through
its own D-ring. Route the lashing through the top right cutout of the
rear endboard. Secure with a load binder and D-rings on the right
side.
7
2 and 13
Route a 15-foot lashing through clevis 2 and through its own D-ring.
Route the lashing through the second left cutout from the top of the
front endboard. Route a 15-foot lashing through clevis 13 and
through its own D-ring. Route the lashing through the second cutout
from the top of the rear endboard. Secure with a load binder and D-
rings on the left side.
8
2A and 13A
Route a 15-foot lashing through clevis 2A and through its own D-
ring. Route the lashing through the second right cutout from the top
of the front endboard. Route a 15-foot lashing through clevis 13A
and through its own D-ring. Route the lashing through the second
right cutout from the top of the rear endboard. Secure with a load
binder and D-rings on the right side.
Figure 8-8. Ammunition Stack and Endboards Lashed (Continued)
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-17
Chapter 8
11
7
10
4
6
9
Lashing
Clevis
Instructions
Number
Number
9
4 and 4A
Pass a 30-foot lashing through both clevises and through the third
cutouts from the top in the front endboard. Secure the lashing to the
front right side with a load binder and D-rings.
10
6 and 6A
Pass a 30-foot lashing through both clevises and through the
second cutouts from the top in the front endboard. Secure the
lashing to the front right side with a load binder and D-rings.
11
7 and 7A
Pass a 30-foot lashing through both clevises and through the top
cut-outs in the front endboard. Secure the lashing to the front right
side with a load binder and D-rings.
Figure 8-8. Ammunition Stack and Endboards Lashed (Continued)
8-18
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
12
14
11
10
9
13
Lashing
Clevis
Instructions
Number
Number
12
9 and 9A
Pass a 30-foot lashing through both clevises and through the top
cut-outs in the rear endboard. Secure the lashing to the rear right
side with a load binder and D-rings.
13
10 and 10A
Pass a 30-foot lashing through both clevises and through the
second cutouts from the top in the rear endboard. Secure the
lashing to the rear right side with a load binder and D-rings.
14
11 and 11A
Pass a 30-foot lashing through both clevises and through the third
cutouts from the top in the rear endboard. Secure the lashing to the
rear right side with a load binder and D-rings.
Figure 8-8. Ammunition Stack and Endboards Lashed (Continued)
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-19
Chapter 8
18
17
16
15
12
8
5
3
Lashing
Clevis
Instructions
Number
Number
15
3 and 3A
Pass a 30-foot lashing through both clevises and over the top of the
front stacks of 155-mm projectiles. Secure the lashing on the right
side with a load binder and D-rings.
16
5 and 5A
Pass a 30-foot lashing through both clevises and over the top of the
front stacks of 155-mm projectiles. Secure the lashing on the right
side with a load binder and D-rings.
17
8 and 8A
Pass a 30-foot lashing through both clevises and over the top of the
of the center stacks of 155-mm projectiles. Secure the lashing on
the right side with a load binder and D-rings.
18
12 and 12A
Pass a 30-foot lashing through both clevises and over the top of the
rear stacks of 155-mm projectiles. Secure the lashing on the right
side with a load binder and D-rings.
Figure 8-8. Ammunition Stack and Endboards Lashed (Continued)
8-20
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
INSTALLING SUSPENSION SLINGS AND DEADMAN’S TIE
8-10. Install the 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 8-9.
2
3
1
1 Pass one end of a 12-foot (2-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.
2 Install on the left front tandem link and the right rear and left rear tandem links a 12-foot (2-
loop), type XXVI nylon suspension sling as in step 1.
3 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.
Figure 8-9. Suspension Slings and Deadman’s Tie Installed
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-21
Chapter 8
PREPARING AND STOWING CARGO PARACHUTES
8-11. Prepare and stow 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 8-10.
2
3
1
Note. Ensure the suspension sling safety tie and the suspension slings are positioned on top of the
honeycomb pieces placed in steps 1 through 3.
1 Cut and position one 36- by 60-inch piece of honeycomb with the 60-inch edge flush with
the rear edge of the ammunition stack. Tape the edges of the honeycomb with 2-inch
adhesive tape and secure the honeycomb to a convenient point on the load with type III
nylon cord.
2 Cut and position a second 19- by 60-inch piece of honeycomb against the front edge of the
first piece of honeycomb. Tape the edges and secure with type III nylon cord.
3 Cut and position two 17- by 33-inch pieces of honeycomb flush against the front edge of
the second piece of honeycomb. Ensure the 17-inch edges are flush with the front
endboard. Tape the edges and secure with type III nylon cord.
Note. Secure the suspension sling safety tie on the right and left side by routing a single length of
type I, 1/4-inch cotton webbing around the 1/2-inch and securing with a surgeon’s knot and locking
knot.
Figure 8-10. Cargo Parachutes Prepared and Stowed
8-22
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
4
9
5
4 Prepare two G-11B cargo parachutes on top of the pre-positioned honeycomb according to
FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
5 Install the parachute restraint to the bushing bolted to the side rail hole number 9 and 9A.
Figure 8-10. Cargo Parachutes Prepared and Stowed (Continued)
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-23
Chapter 8
INSTALLING THE RELEASE SYSTEM
8-12. Prepare, attach, and safety an M-1 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 8-11.
1
2
3
3
2
1 Prepare and install the M-1 cargo parachute release according to FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 centered on the 17- by 33-inch
honeycomb release platform and attach the suspension slings and riser extensions.
2 Safety the top and bottom of the release to convenient places 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 8-11. M-1 Cargo Parachute Release Installed
8-24
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
INSTALLING THE EXTRACTION SYSTEM
8-13. 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 8-12.
3
1
REAR
LEFT
D4
2
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 12-foot EFTC cable according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-
AB-MMO-010/TO 13C7-1-5. Safety the cable to tiedown ring D4 with one turn of type I,
1/4-inch cotton webbing.
3 Attach a 9-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 8-12. Extraction System Installed
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-25
Chapter 8
PLACING EXTRACTION PARACHUTE
8-14. 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
8-15. 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
8-16. 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 8-13. 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
8-17. Use the equipment listed in Table 8-1 to rig this load.
8-26
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
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:
7,620 pounds
Minimum Weight
2,520 pounds
Maximum Suspended Weight
14,250 pounds
Height
61 inches
Width
108 inches
Overall Length
96 inches
Overhang: Front
0 inches
Rear
0 inches
Center of Balance (from front edge of the platform)
50 inches
Extraction System with 12-foot cable (adds 18 inches to length of platform)
EFTC
Figure 8-13. 155-MM Ammunition (MACS PAC) Rigged on an 8-Foot, Type V Platform for Low-
Velocity Airdrop
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-27
Chapter 8
Table 8-1. Equipment Required for Rigging 155-MM Ammunition (MACS PAC) Rigged on an
8-Foot, Type V Platform for Low-Velocity Airdrop
National Stock Number
Item
Quantity
8040-00-273-8713
Adhesive, paste, 1-gallon
As required
8305-00-880-8155
Clevis, suspension: 1-inch (large)
5
4020-00-240-2146
Cord, nylon, type III
As required
1670-00-434-5797
Coupling, airdrop, extraction force transfer with
12-foot cable
1
Cover, clevis, large
1670-00-360-0328
3
Cushioning material, packaging, cellulose wadding
8135-00-664-6958
As required
Felt, ½-inch thick
8310-00-958-3685
As required
Leaf, extraction line (line bag) (add 2 for C-17)
1670-01-183-2678
Line, extraction, type XXVI nylon webbing:
60-foot (3-loop), type XXVI
1670-01-062-6313
1
140-foot (6-loop), type XXVI
1670-01-468-9178
1
60-foot (1-loop), type XXVI for C-17 drogue line
1670-01-064-4452
1
Link assembly, two-point:
1670-01-493-6418
1
Nail, steel wire, common 8d
5351-00-010-4659
As required
Pad, energy-dissipating, honeycomb
1670-00-753-3928
44 sheets
Parachute:
Cargo, G-11
1670-01-016-7841
2
Cargo, extraction, 22-foot
1670-00-063-3716
1
Cargo, extraction, 15-foot for C-17
1670-01-063-3715
1
Platform, airdrop, type V, 8-foot
1
Plywood, ¾- by 48- by 96-inches
1670-00-128-4981
7 sheets
Bracket assembly, EFTC
1670-01-353-8425
1
Bracket assembly, extraction
1670-01-162-2372
1
Clevis assembly
1670-01-162-2376
38
Tandem link
1670-01-162-2381
4
Release, cargo parachute, M-1
1670-01-097-8817
1
8-28
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
Table 8-1. Equipment Required for Rigging 155-MM Ammunition (MACS PAC) Rigged on an
8-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
1670-01-062-6313
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
48
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
8305-00-268-2455
Tubular, 1/2-inch, OD 7
As required
8305-00-268-2455
Tubular, 1-inch
As required
8305-00-263-3591
Type VIII webbing
As required
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-29
Chapter 8
SECTION II-RIGGING THE MACS PAC ON A 12-FOOT, TYPE V PLATFORM
DESCRIPTION OF LOAD
8-18. Eighty 155-millimeter projectiles, forty (M231) powder canisters and ten fuse cans are rigged for
low-velocity airdrop on a 12-foot, type V airdrop platform. The load uses three G-11B cargo parachutes.
The total rigged load is 73-inches high, 108-inches in width, and is 162-inches in overall length. The center
of balance is 77-inches from the front edge of the platform. The total rigged weight of the load shown is
12,300- pounds.
Notes.
1. The load shown is using metal crates. However, wooden crates may be used with three
lashings and a load binder.
2. If the metal locking rods are missing, three lashings, D-rings and load binders will be needed.
PREPARING PLATFORM
8-19. Prepare a 12-foot, type V platform as shown in Figure 8-14.
8-30
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
CLEVISES
15A THROUGH 1A
LEFT
REAR
FRONT
RIGHT
CLEVISES
15 THROUGH 1
Step:
1. Inspect, or assemble and inspect, a 12-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 22, 23, and 24.
4. Install clevises on bushings 1 and 2 of each front tandem link.
5. Install clevises on bushings 2, 3 and 4 of each rear tandem link.
6. Starting at the front of each platform side rail, install clevises on the bushings bolted to
holes 4, 6, 7, 8, 9, 14, 16, 17, 18, and 19.
7. Starting at the front of the platform, number the clevises 1 through 15 on the right side, and
1A through 15A 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.
Figure 8-14. Platform Prepared
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-31
Chapter 8
BUILDING HONEYCOMB STACKS
8-20. Prepare honeycomb stack 1 as shown in Figure 8-15 and stack 2 as shown in Figure 8-16.
Notes.
1. This drawing is not to scale.
2. All dimensions are in inches.
3. Leave 4 1/2 inches between the 15- by 5-inch and 15- by 10-inch honeycomb stacks.
Stack
Pieces
Width
Length
Material
Instructions
Number
(Inches)
(Inches)
1
2
36
96
Honeycomb
Form a two-layer base 96 inches long and 60
inches wide. Use a 36- by 96-inch piece and a
24- by 96-inch piece. Ensure the 96-inch edges
are flush. Alternate the layers of honeycomb.
(Repeat to form a 2 layer base stack)
2
24
96
Honeycomb
Included with the first step.
4
15
5
Honeycomb
Form two stacks of two. Place a honeycomb
stack flush along each front corner of the base
stack with the 5-inch side’s flush along the 96-
inch sides of the honeycomb base.
24
15
10
Honeycomb
Form twelve stacks of two. Position a stack 4 ½-
inches from each rear edge with the 10-inch
sides flush along the left and right edges of the
honeycomb base. Evenly space the remaining
two layer pieces of honeycomb (6 each on each
side) between the corner honeycomb stacks
leaving approximately 4 ½-inches between
pieces.
Note. Do not glue the 15- by 5 and 15- by 10-inch honeycomb stacks to the base stack. Slight
adjustments may be necessary as you place the projectiles.
Figure 8-15. Honeycomb Stack 1 Prepared
8-32
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
Notes.
1. This drawing is not to scale.
2. All dimensions are in inches.
Figure 8-15. Honeycomb Stack 1 Prepared (Continued)
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-33
Chapter 8
Notes.
1. This drawing is not to scale.
2. All dimensions are in inches.
3. Leave 5inches between the 15- by 5-inch and 15- by 10-inch honeycomb stacks.
Stack
Pieces
Width
Length
Material
Instructions
Number
(Inches)
(Inches)
2
2
60
36
Honeycomb
Form a two layer base.
8
15
5
Honeycomb
Form four stacks of two. Place a honeycomb
stack flush along each rear corner of the base
stack with the 15-inch side’s flush along the 36-
inch sides of the honeycomb base. Place a
honeycomb stack to the front of the previously
positioned pieces with the 5-inch side’s flush
along the 36-inch sides of the honeycomb base.
10
15
10
Honeycomb
Form five stacks of two. Place a honeycomb
stack flush along each front corner of the base
stack with the 10-inch side’s flush along the 36-
inch sides of the honeycomb base. Center a
stack with the 10-inch side flush along the rear
edge of the base stack. Evenly space the two
remaining honeycomb stacks between the
corner honeycomb stacks and center stack
leaving approximately 5 inches between pieces.
Note. Do not glue the 15- by 5 and 15- by 10-inch honeycomb stacks to the base stack. Slight
adjustments may be necessary as you place the projectiles.
Figure 8-16. Honeycomb Stack 2 Prepared
8-34
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
Notes.
1. This drawing is not to scale.
2. All dimensions are in inches.
Figure 8-16. Honeycomb Stack 2 Prepared (Continued)
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-35
Chapter 8
POSITIONING LASHINGS ON THE PLATFORM
8-21. Position eight 15-foot lashings according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-
MMO-010/TO 13C7-1-5 and as shown in Figure 8-17.
2
4
1
3
1 Pass a 15-foot lashing through tiedown ring A1 and back through its own D-ring. Run the
lashing off the front edge of the platform and S-fold the excess.
2 Repeat for tie-down ring B1, A2 and B2.
3 Pass a 15-foot lashing through tiedown ring A5 and back through its own D-ring. Run the
lashing off the rear edge of the platform and S-fold the excess.
4 Repeat for tiedown ring B5, B6 and C6. Ensure the lashings attached to tiedown rings A5
and B5 are routed to the outside of the lashings attached to B6 and C6.
Figure 8-17. Lashings Positioned on Platform
8-36
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
POSITIONING THE HONEYCOMB STACKS ON THE PLATFORM
8-22. Position the honeycomb stacks as shown in Figure 8-18.
1
2
1 Position the honeycomb base stack 1, 6 1/2 inches from the front edge of the platform and
centered.
Note. When positioning the honeycomb stack, ensure the bolts and nuts of the platform extraction
bracket are not covered.
2 Position the honeycomb base stack 2, flush against the rear edge of honeycomb stack 1 and
centered.
Figure 8-18. Honeycomb Stacks Positioned on the Platform
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-37
Chapter 8
3
REAR VIEW
4
FRONT VIEW
Note. Do not glue the 15 by-5 and 15 by-10-inch honeycomb stacks to the base stack. Slight
adjustments may be necessary as you place the projectiles.
3 Position the 15- by 10 and 15- by 5 honeycomb pieces according to the first drawing of
Figure 8-16 on the honeycomb base stack 2.
4 Position the 15- by 10 and 15- by 5 honeycomb pieces according to the first drawing of
Figure 8-15 on the honeycomb base stack 1.
Figure 8-18. Honeycomb Stacks Positioned on the Platform (Continued)
8-38
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
POSITIONING AND SECURING THE AMMUNITION STACKS
8-23. Position and secure the ammunition stacks as shown in Figure 8-19.
1
1 Tie the four center eyelets of each bundle together with 1-inch tubular nylon webbing.
Secure with a surgeon’s knot locking knot and cover with cloth backed tape. Use for lifting
purposes only.
THREE LASHINGS
Note. The racks of projectiles will need three lashings if the locking pins of the racks are missing.
Figure 8-19. Ammunition Positioned and Secured
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-39
Chapter 8
2
2
Note. Slight adjustments to the honeycomb stacks may be necessary when positioning the
projectile racks.
2 Position four sets of (155-mm) projectiles flush on the honeycomb on the left side (32 total)
and one set of (155-mm) projectiles flush against the rear set of projectiles on the left side
(8 total). Ensure the racks are flush against one another. Fit the skids at the bottom of the
bundles into the slots in the honeycomb stack.
Figure 8-19. Ammunition Positioned and Secured (Continued)
8-40
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
3
3
3 Position four sets of (155-mm) projectiles flush on the honeycomb on the right side (32
total). Position one set of (155-mm) projectiles flush against the rear set of projectiles on
the right side (8 total). Ensure the racks are flush against one another. Fit the skids at the
bottom of the bundles into the slots in the honeycomb stack.
Figure 8-19. Ammunition Positioned and Secured (Continued)
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-41
Chapter 8
4
5
6
4 Route the pre-positioned lashing from tie-down ring A2 over the top of the right stack of
(155-mm) projectiles at the front of the load. Route the pre-positioned lashing from tie-
down ring A5 over the top of the right stack of (155-mm) projectiles at the rear of the load.
Secure the lashings on top towards the front of the load using two D-rings and a
loadbinder.
5 Route the pre-positioned lashing from tie-down ring B2 over the top of the left stack of
(155-mm) projectiles at the front of the load. Route the pre-positioned lashing from tie-
down ring B5 over the top of the left stack of (155-mm) projectiles at the rear of the load.
Secure the lashings on top towards the front of the load using two D-rings and a
loadbinder.
6 Pad the loadbinders with felt. Secure the felt using a length of type III nylon cord.
Figure 8-19. Ammunition Positioned and Secured (Continued)
8-42
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
8
7
9
7 Cut a 24- by 30- by ½-inch piece of plywood. Position the piece in a vertical position and
flush against the rear stacks of projectiles. Ensure the 30-inch edge is flush against the
honeycomb base stack.
8 Place a 15-foot lashing, 5 inches from the previously positioned plywood in a left to right
direction. Ensure the D-ring is positioned on top of the right stacks of projectiles.
9 Place a 15-foot lashing, 26 inches from the previously positioned plywood in a left to right
direction. Ensure the D-ring is positioned on top of the right stacks of projectiles.
Figure 8-19. Ammunition Positioned and Secured (Continued)
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-43
Chapter 8
14
13
12
11
10
Note. When positioning the (M231) powder canisters ensure the edge of the canisters are flush
against the previously positioned plywood.
10 Position four (M231) powder canisters on top of the two pre-positioned lashings on top of
the base stack with the canister openings facing toward the front edge of the platform and
flush against the previously positioned plywood.
11 Place a 30- by 24-inch piece of honeycomb over the four canisters.
12 Place a second layer of four (M231) powder canisters on top of the 30- by 24-inch piece of
honeycomb.
13 Place a second layer of 30- by 24-inch piece of honeycomb over the second layer of
canisters.
14 Place a third layer of four (M231) powder canisters on top of the 30- by 24-inch piece of
honeycomb.
Figure 8-19. Ammunition Positioned and Secured (Continued)
8-44
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
16
15
15 Secure the pre-positioned lashings over the canisters.
16 Pad between the canisters and load binders with a piece of felt.
18
17
17 Position a 15-foot lashing from front to rear and 7-inches in from each inside edge of
positioned projectiles according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-
010/TO 13C7-1-5. Ensure the D-rings are positioned on top of the rear stacks of
projectiles.
18 Cut a 24- by 30- by ½-inch piece of plywood. Position the piece in a vertical position and
flush against the previously positioned (M231) powder canisters. Ensure the 30-inch edge
is flush against the honeycomb base stack.
Figure 8-19. Ammunition Positioned and Secured (Continued)
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-45
Chapter 8
23
22
21
20
19
19 Position one (M231) powder canister on top of the two pre-positioned lashings on top of
the base stack facing left to right and flush against the previously positioned plywood.
20 Place a 7- by 30-inch piece of honeycomb over the canister.
21 Place a second (M231) powder canister on top of the 7- by 30-inch piece of honeycomb.
22 Place a second layer of 7- by 30-inch piece of honeycomb over the second canister.
23 Place a third (M231) powder canister on top of the 7- by 30-inch piece of honeycomb.
24
24 Cut a 24- by 30- by ½-inch piece of plywood. Position the piece in a vertical position and
flush against the previously positioned (M231) powder canisters. Ensure the 30-inch edge
is flush against the honeycomb base stack.
Figure 8-19. Ammunition Positioned and Secured (Continued)
8-46
FM 4-20.112/TO 13C7-1-8
20 February 2009
Rigging 155-Millimeter (MM) Ammunition Modular Artillery Charge System Package (MACS PAC) on a
Type V Platform for Low-Velocity Airdrop
29
30
28
27
26
25
25 Position and center 5 fuse cans flush against the previously positioned plywood.
26 Place a 17- by 30-inch piece of honeycomb over the fuse cans.
27 Place a second layer of five fuse cans on top of the 17- by 30-inch piece of honeycomb.
28 Place a second layer of 7- by 30-inch piece of honeycomb over the second layer of fuse
cans.
29 Position one (M231) powder canister on top of the previously positioned honeycomb and
flush against the plywood from left to right.
30 Cut and position two 4 ½ - by 30-inch honeycomb pieces flush against the powder canister
on top of the honeycomb from step 28.
Figure 8-19. Ammunition Positioned and Secured (Continued)
20 February 2009
FM 4-20.112/TO 13C7-1-8
8-47
Chapter 8
31
32
33
31 Cut a 24- by 30- by ½-inch piece of plywood. Position the piece in a vertical position and
flush against the previously positioned (M231) powder canisters. Ensure the 30-inch edge
is flush against the honeycomb base stack.
32 Place a 15-foot lashing, 5-inches from the previously positioned plywood in a left to right
direction according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO
13C7-1-5. Ensure the D-ring is positioned on top of the right stacks of projectiles.
33 Place a 15-foot lashing, 26-inches from the previously positioned plywood in a left to right
direction according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO
13C7-1-5. Ensure the D-ring is positioned on top of the right stacks of projectiles.
Figure 8-19. Ammunition Positioned and Secured (Continued)
8-48
FM 4-20.112/TO 13C7-1-8
20 February 2009

 

 

 

 

 

 

 

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