This machine is a development of the famous AVRO 504K, the standard dual control training machine, not only of the British Royal Air Force, but of almost every Military and Naval Air Force in the World, which machine it replaces.

Among other improvements, the following are of interest;
(1) A New" Oleo" undercarriage is fitted .
(2) An adjustable Tail Plane arranged for dual operation, enabling the machine to be trimmed for different speeds and varying loads.
(3) Altered Centre Section Plane and Wing Roots, allowing a much greater range of upward and forward vision.
(4) New shape Ailerons to lighten and harmonise the lateral control with the elevator and rudder controls.
(5) Direct gravity feed for petrol.

The AVRO 504K , Mark II, is remarkable for its manreuvrability and ease of control, and its great structural strength combined with these qualities makes it a safe machine in every sense of the word. The wonderful flying qualities of the machine from which it has been developed (AVRO 504K) are known to all to whom flying means anything, and these qualities have been retained and enhanced in its successor, the AVRO 504K; Mark II.

The Standard AVRO 504K , Mark II carries pilot and one pupil. It can, however, be adapted, as a small commercial machine, to carry pilot and two passengers if required. It should be noted that the majority of the parts of the 504K and 504K, Mark II, are interchangeable.

Engine ; Gnome Monosoupape 100 h.p. Rotary Type. The 110 h.p . Le Rhone or 130 h.p. Clerget may also be fitted as alternatives.