The aircraft was powered by a total of four supercharged Armstrong Siddeley Serval III ten-cylinder radial engines, each capable of providing up to 340 hp (250 kW). This powerplant was a relatively recent development, each one basically being a pair of Armstrong Siddeley Mongoose engines joined together.
The aircraft utilized four supercharged Armstrong Siddeley Serval III ten-cylinder radial engines as its power source, with each engine capable of producing up to 340 hp (250 kW). This propulsion system was a relatively recent innovation, consisting of pairs of Armstrong Siddeley Mongoose engines joined together.