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.

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

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

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

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.

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