Unlock all planes and missions
To unlock all planes and missions hold L and hit X and Y simultaneously.

An audio confirmation will occur, may have to be entered multiple times.

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

Bonus airplanes
Complete the listed mission to unlock the listed aircraft:

Aircraft Mission
T-4 - Fighter Pilot 5
T-2 - Fighter Pilot 13
Silver F-4EJ - Fighter Pilot 20
F-15DJ - Fighter Pilot 26
F-15J - Fighter Pilot 30
F-104J - Tactical Challenge 5
F-4J - Tactical Challenge 6
F-1 - Tactical Challenge 7
Gray F-4EJ - Tactical Challenge 8

Receive F-15 Aggressor two
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

F-18 aggressor
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.

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

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