the aew.7 version would have seen the ventral radome containing the an/aps-20 radar removed and replaced with a dorsal rotating dome or 'rotodome', similar to that used on the us grumman e-2 hawkeye, carrying a newly developed fmicw radar system. to accommodate a new installation of the size of the rotodome, together with its position right at the rear of the aircraft, the intention was to rebuild the rear fuselage with the single tailfin being substituted by a twin tail arrangement, as well as the wingspan being increased to 60 ft (18.3m). the rotodome was designed to be moveable on its installation, able to tip backwards to allow the radar beam to operate clear of interference from the gannet's propellers, negating the need to replace the double mamba with a turbofan engine assembly. in the end, this proposal was not proceeded with.