Avro 748

Avro 748
Ken Fielding · CC BY-SA 3.0 · source
Name	Avro 748
Type	Regional airliner
Manufacturer	Hawker Siddeley Aviation
First flight	24 June 1960
Introduced	1962
Primary user	Civil operators

Avro 748 is a twin-turboprop regional airliner developed in the late 1950s and early 1960s by Hawker Siddeley Aviation's Avro division. Designed for short-haul routes and rough-field operations, it served with a wide range of civil airlines and military transport squadrons, alongside conversions for special missions. The type influenced subsequent commuter aircraft designs and remained in commercial use into the 21st century.

Development

The Avro 748 emerged from a postwar British initiative involving British European Airways and the Ministry of Aviation to replace aging piston transports such as the Douglas DC-3 and to compete with designs from de Havilland and Fokker. The project involved collaboration with industrial partners including Hawker Siddeley Aviation and suppliers tied to Rolls-Royce turboprop development. Early prototype testing drew interest from airlines like Aer Lingus, Ansett, and Trans-Australia Airlines, prompting production commitments at facilities in Woodford Aerodrome and export negotiations with governments including India and Canada.

Design

The design emphasized rugged operations similar to those of the Vickers Viscount and light transports such as the Handley Page Herald. Key features included a high-mounted wing, robust landing gear suitable for unprepared strips in regions like East Africa and Papua New Guinea, and flexible cabin layouts accommodating passenger, combi, and cargo roles. Powerplants originally specified included turboprops from Rolls-Royce and later variants were fitted with engines associated with firms like Allison Engine Company. Avionics suites were upgraded over time with equipment from suppliers linked to Ferranti and Smiths Industries.

Operational history

Operators ranged from flag carriers such as British European Airways and Ansett to regional carriers like Air Botswana and Air Malawi. Military operators included squadrons from the Royal Air Force and the air forces of India and New Zealand. The type performed commuter schedules across networks in Europe, Africa, Australia, and Asia, often replacing or supplementing turboprops such as the Fokker F27 Friendship and piston types like the Convair 240. Specialized roles saw the platform used by organizations connected to Civil Aviation Authority operations, humanitarian missions coordinated with United Nations agencies, and corporate transport services for companies similar to Shell and BP.

Variants

Production and conversion lines produced multiple variants often tailored for specific operators like Royal Australian Air Force and government transport wings in Malaysia and Sri Lanka. Notable factory or conversion versions paralleled trends seen in models such as the Short Skyvan and included stretched fuselage and high-capacity commuter configurations. Military conversions paralleled adaptations found on types like the Transall C-160 for troop and cargo duties; avionics and engine upgrades followed supplier packages from firms akin to Raytheon and Honeywell.

Military and civil operators

Civil carriers operating the type included British European Airways, Ansett, Aer Lingus, Air Botswana, Air Malawi, and numerous regional airlines across Africa and Asia. Military users included the Royal Air Force, Indian Air Force, Royal New Zealand Air Force, and air arms of countries such as Malaysia and Sri Lanka. Government flight departments and organizations linked to United Nations peacekeeping logistics also employed the platform.

Accidents and incidents

The aircraft experienced incidents typical of regional turboprops operating in demanding environments, involving controlled flight into terrain, runway overruns in locations like Kilimanjaro Airport and remote airstrips, and in-flight emergencies leading to forced landings. Accident investigations were carried out by authorities similar to the Air Accidents Investigation Branch and national civil aviation agencies in Australia and India, producing safety recommendations that influenced operator training programs and maintenance standards implemented by carriers such as Ansett and British European Airways.

Specifications (Avro 748 Series)

- Crew: 2 (typical) - Capacity: approx. 40–58 passengers depending on variant and layout - Length: ~21.7 m (varies by series) - Wingspan: ~33.4 m (series dependent) - Powerplant: 2 × turboprop engines (manufacturers included Rolls-Royce and Allison Engine Company types) - Cruise speed: ~430 km/h (approximate, series dependent) - Range: ~1,800 km (configurable fuel and load) - Service ceiling: ~25,000 ft (operational limits varied by operator)

Category:British civil aircraft Category:1960s British airliners