HS 748HS 748 Srs2/244RoleAirlinerManufacturerFirst flight24 June 1960StatusActive servicePrimary usersProduced1961-1988Number built380VariantsThe Hawker Siddeley HS 748 is a medium-sized originally designed by the British firm in the late 1950s as a replacement for the aging then in widespread service as. Avro concentrated on performance, notably for operations, and found a dedicated market. 380 aircraft were built by Hawker Siddeley. A larger, stretched development of the HS 748, the, attempted to compete with the but saw a limited production run. Aeroparque Jorge Newbery, Buenos Aires, in 1972The original 748 design was started in 1958, after the infamous ended most military manned-aircraft development in the UK, and Avro decided to re-enter the civilian market.The had the larger end of the short-haul market, and Avro therefore decided to design a smaller powered by two turboprop engines, intended to replace the many that were by then reaching the end of their economic lifespan. Original plans were for a 20-30 seat aircraft with a similar configuration to the, but talks with potential customers soon led to a low-wing 40 seat design being chosen for the 748 project.Avro was not the only company to see the potential for a DC-3 replacement, and by this point work on the 748's direct competitor, the turboprop, was well advanced. Avro therefore decided to compete by producing a more rugged design with better short-field performance, allowing it to operate from smaller airports and those with rough surfaces.

• Hawker Siddeley Harrier
• Hawker Siddeley Hs 748

Hawker Siddeley Harrier

This was accomplished with a long, high lift wing and a unique single slot flap with a hinged flap tab at the trailing edge. The wing was mounted low on the fuselage with dihedral from the root, allowing good overall ground clearance and easy mounting of strong durable landing gear. Other features of the 748 included an internal engine starting system, and systems and structures that were designed to be easy to inspect and repair in the field with limited equipment.

The 748 was one of the first medium-sized aircraft to use fail-safe design principles in the structure, instead of the then common safe-life principles. Because of these features, the 748 quickly became popular (and still is today) with a variety of airlines operating in remote areas thanks to its ability to haul payloads of over 10,000 lbs in and out of short rough fields with little to no ground service equipment.The first Avro 748 flew from the company's aircraft factory on 24 June 1960, and testing of the two prototypes quickly proved the type's short-field performance. 18 Avro 748 Series 1 aircraft were produced, the first for Skyways Coach-Air being delivered in April 1962.

However, the majority of the series 1 were delivered to. By this point, Avro's individual identity within the Group had ended and the design became known as the HS 748.After the initial batch of series 1 aircraft production switched to the series 2, which was similar to the series 1 but with more powerful RR Dart RDa 7 Mk 531 engines and increased gross weight. In 1967 the series 2A was introduced which, again, was the same basic aircraft but with Mk. 532 engines and a further increase in gross weight.

From 1971 on, a large freight door in the rear cabin and strengthened cabin floor were offered as options on the Srs 2A. In 1979 the Series 2B was introduced, which featured a 4-foot increase in wingspan at the tips, Mk 536-2 engines, a modernized passenger cabin, and improvements to the fuel, and engine fire protection systems.In 1972, a Hawker Siddeley 748 was one of the last planes to be flown by noted aviator.

He took part in several flights, accompanied in the cockpit by Hawker Siddeley test pilot Tony Blackman, and taking off from the company's airfield at Hatfield. 1The 748 Series 1 and Series 2 were also licence-produced in by (HAL) as the HAL-748. HAL built 89 aircraft in India, 72 for the and 17 for the. Hawker Siddeley also used the HS 748 as the base for their HS 780 Andover, a transport aircraft built for the Royal Air Force.

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Hawker Siddeley Hs 748

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Jane's Information Group. ^ 'Avro 748 moves to Liverpool'. Aeroplane (Cudham: Kelsey Publishing) (January 2012): 11.' World Airliner Census'., Volume 184, Number 5403, 13–19 August 2013, pp. 40–58.External links.BAe/HS 748 AEW. This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply.

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