Avro 621 Mentor Story
The Avro 621 Tutor was an important part of RAF and RAF pilot training during the interwar period. Evolving from the WWI-era Avro 504 series, the Type 621 proved to be a subsequent success.
A total of approximately 852 prototypes were built, and during its production, the 621 completed many missions from approximately 10 air forces around the world, giving the aircraft a special place in aviation history.
The design of the Avro 621 Tutor is a simple biplane type with two tandem seats for students and instructors in a tubular fuselage. Windshields are installed at every seat, as are redundant controls.
The biplane structure is connected by a series of struts between them, while the engine is attached to the forward-most part of the structure, rotating a two-bladed propeller. The landing gear was of a traditional WWI static design, with the tail wheel mounted aft.
During the training, the tutor proved to be very good, while the handling was rated as excellent. Undoubtedly, part of the reason is that the genre came from the excellent and very successful Avro 504 series developed during the First World War.
During World War II, around 200 mentor trainers remained in service with the British Armed Forces. Overall production is handled by the UK (Avro), South Africa and Poland (the latter all licensed production rights).
By 1936, the British production line would cease to produce the 621, with nearly 800 models in circulation by then.
Specification
Basic
Production
Roles
- Education
Dimensions
26.38 ft (8.04 m)
10.36m
2.92m
Weight
836kg
1,131 kg
Performance
Performance
120 mph (193 km/h; 104 knots)
16,001 ft (4,877 m; 3.03 mi)
250 miles (402 km; 217 nmi)
Armor
No.
Changes
621 Tutor - Designated basic series; two-seater basic trainer.
621 Tutor II - Modified wing strut layout.
646 Sea Tutor - Royal Navy seaplane derivative; equipped with two pontoons for offshore operations.
PWS-18 - Poland designated local licensed production model 621 Tutor; approximately 40 copies were produced.





