Though airplane P-63 looks as increased fighter "Airacobra", actually it is absolutely new design which has excellent high-speed qualities at all altitudes. Nicknamed "Kingcobra" the fighter has taken much from airplane ÕÐ-39Å. Nevertheless, as against last design P-63 was more, than "Airacobra" with a new wing, differed engine V-1710-93 "Allison" (on modification P-63À), with the mode "forcing" increased power up to 1500hp.
   Though it has been constructed about 3300 airplanes of various modifications, but to the moment when the first production copies have got in air force the USA in October, 1943, airplanes P-51Â, P-38Í and P-47Ñ have satisfied requirements of air force for a front fighter. Therefore the majority of airplanes P-63 became accessible to purchase in accordance to Lend-Lease terms.
   In total 2400 airplanes P-63 "Kingcobra" were supplied to USSR in accordance to Lend-Lease terms.