The requirements were formulated around an aircraft capable of performing in day, night, and adverse weather, and compatible with all the advanced weapons systems planned for development and fielding into the 1980s.
Os requisitos formuláronse en torno a unha aeronave capaz de actuar de día, de noite e con meteoroloxía adversa, e que fose compatible con todos os sistemas de armas avanzados planeados para ser desenvolvidos e despregados nos 80.