In his book History of aircraft construction in the USSR in 1951-1965gg. referred to another project on the ADA.
Antonov An-25 - all-metal cantilever monoplane design and mid-large rectangular wing span and elongation. The airplane is one turbojet engine D-20P with a takeoff thrust of 5800 kgf and two air intakes in the wing at the junction with the fuselage. AN-25 has a pressurized cabin for pilot and gunner / observer located in the glassed-in front of the plane.
The aircraft equipment is installed (in the fairing on the keel), designed for detecting, tracking ADA at altitudes up to 40,000 hours for the destruction of the balloon at an altitude of 22,000 meters on the upper surface of the fuselage behind the cockpit is infantry unit with an angle of attack in the vertical plane 0 ... 1000.
Calculated data: aircraft takeoff weight - 7200 kg, cruising speed at an altitude of 20 km - 540 km / h, the duration of patrols - 2,5 hours
In 1958, was completed preliminary design.