Auster Taylorcraft AOP

AOP (Air Observation Post)

Air Observation Post (AOP) is an aeroplane used in the role of artillery spotter by the British Army and Commonwealth forces.


Taylorcraft Plus C

Licence-built Taylorcraft B

Taylorcraft Plus D

Re-engine Plus C

Model D/1/Auster I

Military version of Plus C with enlarged windows.

Model E/Auster III

Re-engine Auster I with split flaps Gipsy Major 1 engine

Model F/Auster II

Re-engine Auster I Lycoming 0-290-3 engine

Model G/Auster IV

Modified fuselage with extended rear cabin glazing and Lycoming 0-290-3 engine

Model H

Experimental tandem two-seat training glider converted from Taylorcraft B.

Model J/Auster V

As Auster IV with blind-flying instruments and Vacuum System Lycoming 0-290-3/1 engine

Auster J family

Mk 5

Civil conversion of Auster V with Lycoming 0-290-3(C) engines

Mk 5 Alpha

New-build Auster Mk5 aircraft with Lycoming 0-290-3(C) engines


Conversion of Civil Auster V with Lycoming 0-320 engine

J/1 Autocrat

Three-seat high-winged monoplane light aircraft (fitted with Blackburn Cirrus Minor II engine)

Auster J/1A Autocrat

Four-seat version of Autocrat

Auster J/1B Aiglet

Re-engined agricultural version of Autocrat ([De Havilland Gipsy Major1] engine)

Auster J/1N

Conversion of Auster J/1 Autocrat from Cirrus Minor II engine to Gipsy Major1 engine.

Auster J/1N Alpha

New built Auster J/1N aircraft (De Havilland Gipsy Major1 engine)

Auster J/1S Autocrat

Conversion to De-Havilland Gipsy Major10 Mk2 engine.

J/1U Workmaster

Agricultural version of the Alpha Lycoming 0-360 engine

Auster J/1Y

Conversion of Auster J/1 Series to Lycoming 0-320 Engine Predecessor of Auster D5/160 Auster D5

J/2 Arrow

J/3 Atom

Low-powered version of Arrow with Continental engine


Arrow with Blackburn Cirrus Minor I engine Predecessor of Auster D4/108

J/5 Adventurer

Three-seat high-wing monoplane light aircraft

Auster J/5 Adventurer

Auster J/5A Adventurer

J/5 Autocar

Auster J/5B Autocar

Four-seat high-winged monoplane light aircraft

Auster J/5E Autocar

Auster J/5G Autocar

Auster J/5P Autocar

Auster J/5T Autocar

One only built

Auster J/5V Autocar

J/5 Aiglet Trainer

Aerobatic version 32 ft wingspan

Auster J/5F Aiglet Trainer

Auster J/5K Aiglet Trainer

Auster J/5L Aiglet Trainer

Auster J/8L Aiglet Trainer

J/5 Alpine

Improved Aiglet Trainer with 36 ft wingspan

Auster J/5R Alpine

Auster J/5Q Alpine

Model K/Auster AOP6

Post-war military Air Observation aircraft.

Auster 6A Tugmaster

Glider towing conversion of the Auster 6

Auster 6B/Beagle Terrier

Civil conversion of the Auster 6

Model L

Proposed two or three seat low-wing monoplane based on the Model G airframe with a Lycoming O-290-3 engine, not built.

Model M/Auster A.2/45

2 or 3-seat high-wing AOP aircraft, prototype only.

Model N/Auster A.2/45

Re-engined Model M, prototype only.

Model P/Auster Avis

Four-seater based on J/1 with slimmer fuselage, two built.

Model Q/Auster T7

Two-seat trainer version of AOP6.

Model S

AOP aircraft based on AOP6 with enlarged tail, prototype only.

Model A3

Two-seat light aircraft project with a Blackburn Cirrus Minor engine, not built.

Model A4

Two-seat development project of current (1948) designs with a Blackburn Cirrus Minor 2 engine, not built.

Model A5

Four-seat army co-operation project with a De Havilland Gipsy Major 10 engine, two version planned a conventional landing gear for air ambulance work and a tricycle landing gear version for communications and reconnaissance work, not built.

Model A6

Variant of the A4 with a Cirrus Minor engine driving a geared ducted fan, not built.

Model A7

Light twin project, not built.

Model A8

Three-seat AOP project with a Bombardier engine, not built.

Model A9

Project to meet an Royal Air Force requirement for a two-seat training aircraft, the Percival Provost was selected and the A9 was not built.

Model B1

Mid-wing AOP project, not built.

Model B3

Radio-controlled target drone.

Model B4/Auster B4

Four-seat high-winged ambulance aircraft

Model B5/Auster AOP9

1950s military air observation aircraft

Model B6

Parasol-wing agricultural project with bubble canopy, not built.

Model B8/Auster B8 Agricola

Low-winged agricultural aircraft

Model B9

Ramjet helicopter project, not built

Model C4/Auster Antarctic

Modified Auster T7 for Antarctic support.

Model C6/Auster Atlantic

Four-seat high-wing touring monoplane with tricycle undercarriage, one built.

Model D4/Auster D4

Two-seat development of the Auster Arrow.

Model D5/Auster D5

Re-engined version of Auster Alpha with modified tail, developed as the Beagle Husky

Model D6/Auster D6

Four-seat development of Auster Autocar

Model D8

Original designation of Beagle Airedale.

Model E3

AOP9 with modified engine as the AOP11.





22 ft 5 in (6.83 m)


36 ft 0 in (10.97 m)


8 ft 0 in (2.44 m)

Wing area

167 sq ft (15.51 m2)

Empty weight

1,100 lb (499 kg)

Max take-off weight

1,850 lb (839 kg)


1 × Lycoming O-290-3 flat-four piston, 130 hp (97 kW)


Maximum speed

113 kn (130 mph, 209 km/h)

Stall speed

28 kn (32 mph, 51 km/h)


220 nmi (250 mi, 402 km) 400 nmi with long range tank fitted.

Take-off run

91 ft (28 m).



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