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.