The 90 hp (67 kW) RAF 1a engine drove a four bladed, 9 ft 3 in (2.82 m) diameter propeller and was partly enclosed in a metal cowling, with the cylinder heads protruding as it was air-cooled.
[1] It is not known if wings of other sections were fitted as originally intended, but useful aerodynamic data was gathered.
[1] It flew rather well and by May 1919 Boulton & Paul were using it as their sales machine, with the company name in large print on the fuselage side in addition to the roundels.
This corporate aircraft made perhaps the first business flight, from Boulton & Paul's airfield on Mousehold Heath at Norwich to Bury St Edmunds[1] about 36 miles (58 km) away.
A replica of this aircraft has been built by the Boulton Paul Association and is currently in store at Cosford.