Claim: The LKL IV is a two-seater aircraft with the fuel tanks in the fuselage from Poland that had it's first flight in 1932 and was a little longer that the LKL V.
Evidence: Autumn 1932 Fuel tanks were in the fuselage. Because of the more compact radial, the LKL V was 270 mm (10.6 in) shorter than the LKL IV and was also had a slightly lower (12 kg (26 lb)) empty weight. two-seat club aircraft