06/30/2014. Remarks by Johan Visschedijk: "Continuing prejudice against the monoplane configuration and the disappointing results achieved with the PW-2 led the Loening Engineering Corporation to develop a single-seat fighter biplane in the hope of attracting an order from the USAAS.
The PA-1 ("Pursuit, Air-cooled" designation used only this one time) was a single-bay equi-span staggered biplane, the wings employing an unusually thick airfoil and the center section of the upper wing being thickened to accommodate the fuel tank. Armament comprised two 0.30 in (7.62 mm) Vickers machine guns and power was provided by a Wright R-1 (R-1454) nine-cylinder radial rated at 350 hp.
