When using an air cargo shipping service, some might wonder about how they actually fly so many things to different places. Compared to the usual passenger aircraft, it is hard to imagine how so items and packages can fit inside. As most people know, the planes used for the two types of cargo (people vs. 'actual' cargo) are not the same.
Passenger aircraft, which everyone has grown to know and love, are built to carry a certain capacity of weight, restricted to people, carry-on luggage, and other relatively lighter objects.
An example of this type of commercial airplane is the Boeing 737 Next Generation series. This narrow-bodied passenger aircraft is not used for air cargo shipping because it can only carry up to 756-1,835 cubic feet of cargo paired with its 130-215 seating capacity; adding anymore to this will render the aircraft overloaded.
Freight planes, on the other hand, do without the seating capacity as they function solely to transport goods, and not people; there is more space for shipment to be stored, especially since these planes are designed to be bigger than its commercial counterparts. The Boeing 747 Large Cargo Freighter (LCF), or the Dreamlifter, is a perfect example of how cargo planes are made differently to suit their function.
This outsize cargo freight aircraft is used exclusively for transporting airplane parts from around the world. This plane can hold up to 65,000 cubic feet in its main cargo compartment and has a wingspan of 211 feet and 5 inches. This wingspan allows it to soar in the skies even with heavy aircraft equipment inside, as compared to the 93 feet that the Boeing 737 is equipped with; making the Dreamlifter a giant that can hold so much more than other commercial jets.
As seen from this comparison, freight planes are really made to be bigger and more durable than commercial counterparts because of their function. Modifications have been made to make them an ideal form of transport for shipment of different sizes, ensuring everyone that their goods are safe and secure even from 25,000 to 37,000 feet above ground.