Royal Aircraft Factory S.E.4
| S.E.4 | |
|---|---|
| Role | Scout aircraft | 
| National origin | United Kingdom | 
| Manufacturer | Royal Aircraft Factory | 
| Designer | Henry Folland | 
| First flight | June 1914 | 
| Retired | 1914 | 
| Primary user | Royal Flying Corps | 
| Number built | 1 | 
The Royal Aircraft Factory S.E.4 was a single-engined, single seat biplane designed and built at the Royal Aircraft Factory just prior to the start of the First World War. Intended to be as fast as possible, it recorded a speed of 135 mph (217 km/h), which made it the fastest aircraft in the world in 1914, but no production followed and it was soon written off in a crash.