The Blackburn T.R.1 Sprat was a British single-engine two-seat biplane trainer, built in 1926 for advanced training, deck-landing and seaplane experience.

[1] The main undercarriage was a robust split-axle construction, with the legs joining the wings at the bottom of the X-form centre-section struts.

The undercarriage assembly was designed so that it could be easily removed with the aircraft on trestles, and replaced with a pair of aluminium single-step, V-bottomed round-topped floats.

[1] The Sprat was powered by a water-cooled 275 hp (210 kW) Rolls-Royce Falcon III engine with a nose radiator, driving a four-bladed wooden propeller.

[1] The Sprat first flew at Blackburn's works at Brough Aerodrome, then went to Martlesham Heath for comparative trials with the other two contenders.