AircraftP-39P-39P-39FamilyP-39 AiracobraClassFighterChangesMid-engined fighter with the Allison behind the cockpit and a 37 mm cannon firing through the propeller hub; the production versions share one airframe.Produced1,378Service193119321933193419351936193719381939194019411942194319441945United Kingdom · Western Europe9 Oct 1941 – 9 Oct 1941Modifications 9193119321933193419351936193719381939194019411942194319441945Airacobra I9 Oct 1941 – 9 Oct 1941P-39C20P-39D429P-39F229P-39K210P-39L250P-39M240P-39NP-39Q