This specification covers diesel and gasoline engine driven
four-wheel, two-rear-wheel drive, and six-wheel, four-rear-wheel drive
vehicles having minimum gross vehicle weights(GW) of 21,000 to 39,500
pmmds, for normal operating conditions. The vehicles are commercial trucks
equipped with stake and platform or van bodies, capable of elevating the body
and cargo to a specified height for loading and unloading the cargo into and
out of aircraft