Auster AOP.6

Auster AOP.6
Auster AOP.6 operational with 663 (AOP) Squadron in 1954
Role	observation aircraft
Manufacturer	Auster Aircraft Limited
Introduction	1945
Primary users	Royal Air Force Belgian Air Force
Number built	approx 400
Developed from	Taylorcraft Auster
Variants	Beagle A.61 Terrier Auster Tugmaster

The Auster AOP.6 was a British military air observation aircraft produced by Auster Aircraft Limited to replace the numerous wartime Taylorcraft Auster aircraft then in-service.

History

The Auster AOP.6 (Auster Model K) was designed as a successor to the Taylorcraft Auster V, it had a strengthened fuselage, increased all-up weight and a 145 hp (108 kW) de Havilland Gipsy Major 7 engine. It had a different appearance to the wartime Austers due to the lengthened landing gear struts (due to the larger propeller), and external non-retractable aerofoil flaps.

An initial production run of 296 were completed for the Royal Air Force in 1949. A second batch was produced from 1952 with a total delivered of around 400. Aircraft ordered by the Royal Air Force aircraft delivered to the Belgian Air Force (22) and the Royal Hong Kong Auxiliary Air Force (2). New aircraft were delivered to Royal Canadian Air Force, South African Air Force, and the Arab Legion Air Force (Jordan).

A dual-control training version of the AOP.6 was produced, 77 serving as the Auster T.7 (Auster Model Q). In 1955 two T.7 aircraft were modified for use on the 1956 Commonwealth Trans-Antarctic Expedition, being designated Auster Antarctic (Auster Model C4). The aircraft had extra radio equipment, larger tail surfaces, the ability to be fitted with floats or skis as required and a bright orange finish to aid visibility.

The aircraft was replaced with the Auster AOP.9 from 1955 and surplus aircraft were converted to civilian use, first as the Auster 6A and later as the Beagle A.61 Terrier.

Variants

• Auster AOP.6 - main production version, over 400 built.
• Auster 6A Tugmaster - former military aircraft converted for civil use
• Auster T.7 - dual-control training version of the AOP.6, 77 built.
• Auster T.7 Antarctic - modified aircraft for use in the Antarctic, two conversions.
• Auster AOP.8 - proposed development, not built.^[1]
• Auster T.10 - AOP.6s converted to T7 standard, 10 conversions.
• Beagle A.61 Terrier - former military aircraft converted for civil use
• Auster S - An AOP aircraft based on the Auster 6, with enlarged tail. Prototype only.
• Marshalls MA.4 - An Auster T7 modified by Marshalls of Cambridge with a new wing and larger tailplane. Perforated holes in the wing, ailerons and flaps were connected to a suction pump driven by an auxiliary gas turbine engine in the fuselage. The aircraft was used for research into boundary layer control.

Operators

Military operators

 Australia

• Royal Australian Air Force (Two AOP.6 aircraft only).

Belgian Air Force Auster AOP.6 exhibited in the Brussels Museum in April 2000

 Belgium

• Belgian Army (AOP.6)
• Belgian Air Force (AOP.6)

 Burma

• Burma Air Force (T.7)

 Canada

• Royal Canadian Air Force (AOP.6 and T.7)

 Hong Kong

• Royal Hong Kong Auxiliary Air Force

 India

• Indian Air Force
• Indian Army

 Jordan (Transjordania)

• Arab Legion (AOP.6 and T.7)
• Royal Jordanian Air Force

One of the two T.7C Antarctic aircraft with skis on display at the RNZAF Museum, Wigram, near Christchurch in March 1992

 New Zealand

• Royal New Zealand Air Force - One Auster T.7c was used by the RNZAF for the 1956 Commonwealth Trans-Antarctic Expedition.
  • No. 3 Squadron RNZAF

 South Africa

• South African Air Force (AOP.6)

 United Kingdom

Preserved Auster AOP.6 at the Yorkshire Air Museum

• Army Air Corps
• Royal Air Force (AOP.6 and T.7)
  • No. 8 Squadron RAF
  • No. 209 Squadron RAF
  • No. 267 Squadron RAF
  • No. 651 Squadron RAF
  • No. 652 Squadron RAF
  • No. 656 Squadron RAF
  • No. 657 Squadron RAF
  • No. 659 Squadron RAF
  • No. 661 Squadron RAF
  • No. 662 Squadron RAF
  • No. 663 Squadron RAF
  • No. 664 Squadron RAF
  • No. 666 Squadron RAF
  • No. 227 Operational Conversion Unit RAF

Specifications (AOP.6)

Data from Green:^[2]

Auster AOP.6

General characteristics

• Crew: 2
• Length: 23 ft 9 in (7.24 m)
• Wingspan: 36 ft (10.97 m)
• Height: 8 ft 4½ in (2.55 m)
• Wing area: 184 ft² (17.09 m²)
• Empty weight: 1,413 lb (641 kg)
• Max takeoff weight: 2,160 lb (980 kg)
• Powerplant: 1 × de Havilland Gipsy Major 7 inline piston, 145 hp (108 kw)

Performance

• Maximum speed: 124 mph (200 km/h)
• Range: 315 miles (507 km)
• Service ceiling: 14,000 ft (4,265 m)
• Rate of climb: 810 ft per minute (4 m/s)

See also

Related development

• Auster AOP.9
  

References

Notes

1. ^ Auster A.O.P.8 Flight 3 March 1949 p. 266
2. ^ Green 1964, p. 48.

Bibliography

• Green, William (1964). Macdonald Aircraft Handbook. London: Macdonald & Co. (Publishers) Ltd.. 
• The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing. 
• Jackson, A.J. (1974). British Civil Aircraft since 1919 Volume 1. London: Putnam. ISBN 0 370 10006 9. 
• Halley, J.J., The Squadrons of the Royal Air Force & Commonwealth 1918-1988, Air-Britain, Tonbridge, ISBN 0-85130-164-9.