It was planned for production to be carried out in Belfast, Northern Ireland, in a new factory built with money from the British Government in an effort to boost employment.

It featured a pusher configuration in which two engines powered a single constant-speed three- or four-bladed propeller at the rear of the aircraft.

A purpose-built gearbox allowed two Pratt & Whitney Canada PT6B turboshaft engines to supply power via two independent driveshafts.

The intent of the design was to provide the safety of multi-engine reliability, combined with single-engine handling in case of failure of one of the engines.

[3] The US Federal Aviation Administration refused to issue the prototype with an airworthiness certificate because of concerns that, despite having two engines, the combining-gearbox that drove the single propeller was not adequately reliable.