Single-seat fighter biplane, armed with four 7.62 mm (0.30 in)PV-1 or ShKAS machine guns, plus up to 150 kg (330 lb) of bombs
Single-seat fighter biplane, armed with four 7.62 mm (0.30 in)PV-1 or ShKAS machine guns, plus up to 150 kg (330 lb) of bombs. The I-15bis was powered by the more powerful 570 kW (775 PS) Shvetsov M-25V radial piston engine. It had a straight upper wing. A total of 2,408 machines were built.