During the first half of the 1918 the third prototype was also completed. It was powered by a pair of 400 hp (300 kW) Fiat A.12 engines, and had a redesigned nose section and nacelles which were similar to production aircraft. On 15 August 1918 the third prototype was sent to RAF Martlesham Heath for performance tests; testing was delayed by the need to replace a cracked propeller. On 11 September 1918 it was lost when its payload of bombs detonated owing to a hard landing, the result of a pilot-induced stall.