Freight aircraft

A cargo aircraft (also known as freight aircraft, freighter, airlifter or cargo jet) is a fixed-wing aircraft that is designed or converted for the carriage of cargo rather than passengers. Such aircraft usually do not incorporate passenger amenities and generally feature one or more large doors for loading cargo. Freighters may be operated by civil passenger or cargo airlines, by private individuals or by the armed forces of individual countries (for the last see military transport aircraft).

Aircraft designed for cargo flight usually have features that distinguish them from conventional passenger aircraft: a wide/tall fuselage cross-section, a high-wing to allow the cargo area to sit near the ground, a large number of wheels to allow it to land at unprepared locations, and a high-mounted tail to allow cargo to be driven directly into and off the aircraft.

Cargo aircraft represent a small proportion of the overall air freight market. The majority is carried in special ULD containers in the cargo holds of normal passenger aircraft.

Aircraft were put to use carrying cargo in the form of "air mail" as early as 1911. Although the earliest aircraft were not designed primarily as cargo carriers, by the mid-1920s aircraft manufacturers were designing and building dedicated cargo aircraft.

In the UK during the early 1920s, the need was recognized for a freighter aircraft to transport troops and materiel quickly to pacify tribal revolts in the newly occupied territories of the Middle East. The Vickers Vernon, a development of the Vickers Vimy Commercial, entered service with the Royal Air Force as the first dedicated troop transport in 1921. In February 1923 this was put to use by the RAF's Iraq Command who flew nearly 500 Sikh troops from Kingarban to Kirkuk in the first ever strategic airlift of troops.Vickers Victorias played an important part in the Kabul Airlift of November 1928–February 1929, when they evacuated diplomatic staff and their dependents together with members of the Afghan royal family endangered by a civil war. The Victorians also helped to pioneer air routes for Imperial Airways' Handley Page HP.42 airliners.

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