Air freight rates rose as a consequence, from $0.80 per kg for transatlantic cargoes to $2.50-4 per kg, enticing passenger airlines to operate cargo-only flights through the use of preighters, while cargo airlines bring back into service fuel-guzzling stored aircraft, helped by falling oil prices.
Compared to the passenger variant, the freighter has a supernumerary area, which includes four business-class seats forward of the rigid cargo barrier, full main deck access, bunks, and a galley.
This normally involves the replacement of glazed windows with opaque panels, the strengthening of the cabin floor and insertion of a broad top-hinged door in one side of the fuselage.
[5][6] Usage of large military airplanes for commercial purposes, pioneered by Ukraine's Antonov Airlines in the 1990s, has allowed new types of cargo in aerial transportation.
Some have shut down or merged with others:[11] The following are freight divisions without freighter fleets, using passenger aircraft holds or having other cargo airlines fly on their behalf.