The Avro 748 is a medium-sized turboprop airliner designed by the British firm Avro in the late 1950s as a replacement for the aging planes then in widespread service as feederliners. Avro concentrated on performance, notably for STOL operations, and found a dedicated market. 380 748s were built between 1961 and 1988, when it was superseded by the Avro ATP.
- 748 Series 1: The original Avro 748 twin-engined short / medium-range airliner, powered by two Rolls-Royce Dart RDa 7 Mk.514 turboprop engines.
- 748 Series 2: The Series 2 entered production in 1961 with a higher take-off weight and Mk.531 engines.
- 748 Series 2A: The more powerful Series 2A followed in 1967, with a further increase in take-off weight and Mk.532/Mk.534 engines. It proved to be one of the more successful British airliners and the 2A the most popular variant.
- 748 Series 2B: The main production model, the 2B featured a 4-foot increase in wingspan over previous models, a further increase in weights, Mk.536 engines, a modernized cabin, and several systems improvements.
- Super 748: Basically the same as the 2B but fitted with hush kits on the engines.
- Hawker Siddeley HS780 Andover: Modified version of the 748 design for the Royal Air Force. Fitted with kneeling undercarriage, raised tail unit and rear loading ramp.
- Coastguarder: Maritime patrol version.
- 748 Andover: Military passenger transport versions of the 748.
- HAL-748: Licence production by Hindustan Aeronautics Limited at Bangalore, India. Indian aircraft were later modified for a variety of roles including a trials aircraft for an Airborne Early Warning version fitted with a large radome, known as the Airborne Surveillance Platform (ASP). A total of 89 HAL 748's were built.
- HAL 748 Series 2M: Production for the Royal Indian Air Force (the last 20 built) were Series 2M aircraft with a large freight door.