The original program called for two test airframes, five flyable aircraft, and 40 engines. Other aircraft were captured but were not flyable. Boeing supplied flyable aircraft, to which Kawasaki added full avionics, interior, and final paint. Germans captured many Spitfires that were flyable after few repairs. As of 2015 the table below displays aircraft presently in flyable condition. Only three flyable prototypes were completed by early 1944. The game features 31 flyable planes and additional 40 non-flyable planes (available as opponents). As of 30 September 1975 some 13 aircraft were in flyable storage. Three flyable prototypes were planned to be built by 2009. A flyable Junkers J.I replica is under construction in Hungary. Though no longer flyable, both 48-2 and 48-3 were exhibited at the 1993 Moscow airshow. In January 2019, it was reported the third flyable Su-57 prototype (bort. Most flyable examples are powered by Ranger or Gipsy Queen inverted-six cylinder inline engines. The YO-3A remained in a flyable storage state until October 2004. The Japanese appear to have had as many as 10 flyable P-40Es.