| Cirrus Major | |
|---|---|
| |
| Right side view of a Cirrus Major III installed in an Auster J/5G | |
| Type | Air-cooled 4-cylinder inline piston engine |
| National origin | United Kingdom |
| Manufacturer | Blackburn Aircraft |
| First run | 1936 |
| Number built | c.700 |
The Blackburn Cirrus Major is a British, inline-four aircraft engine which was developed in the late 1930s, but continued development and production into the 1940s and post war.