From its inception, the four-engine DC-8 embodied advanced aerodynamic and structural concepts, as well as internal systems designed for maximum service reliability.

A capacity for improved power, payload and range capabilities was inherent in the DC-8 design. Four basic models were produced: the Series 10 through 50, in passenger, freighter and convertible freighter versions; and the Super 60 Series 61, 62 and 63, with freighter models of each. The last of 556 aircraft was delivered on May 13, 1972, marking the end of 15 years of production, at which time there were 48 operators in 28 nations.

The -70 series DC-8's were all modifications of existing -60 series airframes, by replacing the old P&W JT3D engines with newer CFM 56-2 engines. So the -73 is basically an upgrade of the -63 model. With a range of over 4000 miles, and able to carry up to 18 standard cargo containers, the DC-8-73F makes an excellent air freighter. About 50 -63's were converted into -73's. Most of them were F (all cargo) and CF (combi) models.