At the title screen, press L and R at the same time. If you did it right, a voice will say "Ok good." From here, begin a new game and you'll now have access to every single one of the stages and all of the aircraft. You'll also have a perfect score of 1

When you are at the Game Select Screen, hold L and press Y and X at the same time.

Get all planes that you can recieve from missions and tactical challenges, and they reward you with the F-15 Agressor one

In free flight mode choose mission 21 and assign two enemies to battle you. Defeat them with the F-15 aggressor one and you got yourself the F-15 aggressor two

You must have 10 or more carrier landings in one of the two carrier free flight missions. Don't forget to choose a carrier base aircraft and no enemy's.

Complete all fighter missions and tactical challenges to get free flight in missions 20 and 21.

Score over 100 kills and you get the T-3 super recipro fighter.

Successfully complete the indicated mission to unlock the corresponding aircraft: