The FA 330 was evaluated by the Airborbone Forces Experimental Establishment at RAF Beaulieu and RAF Calshot during 1946. At Beaulieu it was flown off a trailer towed by the Jeep that flew as Raoul Hafner's Rotabuggy, whilst at Calshot it was flown off a platform built on the stern of an RAF Seaplane tender. Incidentally the Benson gyroglider Ken Wallis converted to an autogyro (G-APUD) is on display at MOSI in Manchester. And Benson based his designs on the Hafner Rotachute flown at RAF Ringway in 1940 - 41