the gannet had a three-person crew, consisting of the pilot, located in the cockpit at the front of the aircraft, and a pair of observers in the cabin in the fuselage, accessible via a hatch next to the trailing edge of the wing. the aircraft had a typical endurance of 5–6 hours and a maximum altitude of . the gannet tended to cruise on just one engine of the double mamba powerplant; alternating between the two engines every half an hour.