Chapter 4. AIR TRANSPORTABILITY GUIDANCE

55-2320-209-15-1

CHAPTER 4

AIR TRANSPORTABILITY GUIDANCE

Section I. GENERAL

4-1. Scope

4 - 3 . Safety

This chapter provides transportability guidance for

In addition to the safety precautions contained in

air movement of the 21/2ton, 6x6 trucks. It

chapter 3, the following should be noted:

presents examples of tiedown diagrams and tiedown

a. The activity offering the vehicles or items for air

data tables for loading these vehicles in US Air Force

transport will notify the aircraft commander or his

C5, C-130, and C-141 aircraft.

designated representative in the event ammunition

4-2. Maximum Utilization of Aircraft

or explosives are to be transported within a vehicle.

b. Vehicle fuel tanks must not be more than three-

Additional cargo including nuclear weapons and/or

fourths full.

personnel within allowable load limits and restric-

tions prescribed by pertinent safety regulations can

c. The required number of tiedowns plus their

be transported with the 2-1/2-ton, 6x6 trucks in US

capacity must be checked, and the criteria for gravity

Air Force aircraft. Nonnuclear cargo may be trans-

forces, adhered to.

ported in the cargo trucks as long as none of the cargo

d. Each item must be checked carefully to ensure

protrudes above the solid metal sides of the truck bed.

that all loose items are properly secured.

Cargo carried in the bed of a cargo truck must be

e. Cargo tanks of tank trucks will be emptied and

securely tied down to prevent shifting and possible

purged before being loaded on aircraft.

damage. Cargo must be restrained in the vehicle bed

by attachment to either the vehicle or the aircraft

floor and must meet the same restraint criteria as re-

NOTE

quired for the vehicle. Cargo to be stowed and secured

General cargo loads depicted in this manual

in the vehicles must not exceed the maximum rated

for US Air Force C130 and C141 aircraft are

load capacity of 2-1/2tons (5,000 pounds) or aircraft

restrained to the minimum of 8g's forward

allowable cargo load (ACL), and cargo items must be

restraint that is required when passengers or

compatible. The weight of the vehicle plus the weight

nuclear weapons cargo are carried forward of

of any cargo that it may contain must be accurate.

the general cargo. The 8g's forward restraint

The vehicle and its cargo are considered as one

may be reduced to a minimum of 3g's forward

package, and the gross weight is used to determine

restraint for general cargo when passengers

tiedown requirements in accordance with chapter 4,

or nuclear weapons are not carried forward of

FM 55-9. If the cargo truck is to carry any cargo when

the general cargo.

it is in the aircraft, the truck must be loaded and then

When passengers or nuclear weapons cargo

weighed before it is loaded in the aircraft. The weight

are carried forward of general cargo, the

of any cargo loaded on vehicles will change the center

HBU8/A (VAN ZELM) barrier net or equiv-

of gravity (CG) of the vehicles as shown in chapter

alent net on aircraft so equipped shall be posi-

2. The new CG should be determined in accordance

tioned in front of the general cargo to achieve

with chapter 5, FM 55-9. Chapters 4 and 5, FM 55-9,

a minimum of 8g's forward restraint.

contain detailed instructions for air movement of

cargo trucks. Dump trucks should not be air trans-

ported with cargo loaded in the dump bed. The struc-

NOTE

tural strength of the fittings that connect the dump

bed on the truck frame may not be adequate to with-

In air loading, the center of gravity of each

stand the additional stress. When this matter is

vehicle must be determined, and where weight

resolved, guidance will be provided in a change in this

and/or measurement is critical, each vehicle

manual.

should be weighed and/or measured.

4-1

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