Transport Plane Types
A transport plane is an aircraft intended for the transportation of various goods. Often the same aircraft is a cargo and passenger one, only the equipment changes. Freight airplanes are distinguished by simplified household equipment, increased cargo space, large cargo hatches, a stronger floor, on-board mechanization for loading and unloading.
A transport aircraft may have the following design features that distinguish it from passenger models:
"high-wing" layout (allows to place the cargo as close to the ground as possible)
reinforced chassis with bigger quantity of wheels
cargo hatches at the bottom and at the top of the fuselage
hatches in front of the fuselage ("folding nose") and in the rear ("swinging" or "folding" tail), sometimes combined with a ramp
reduced door to the cockpit
absence of portholes
The above listed design features are designed to facilitate the loading and discharging.