Air Force Delta Strike Cheats

Bonus planes:
Finish the game and save when prompted. Use that saved game to continue a new game. Finish the Blue Wing Knights mission, then choose another mission. Press Square at the aircraft selection screen to choose from the Vic-Viper and other bonus planes. The Vic Viper has a longer range machine gun that can destroy an enemy plane with one hit. Other bonus planes such as the TwinBee, MX5000, Falsion, Blue Thunder M-450, Manbou-J, Flint-Rock, Aura-Wing, Jerry Mouse, Block Shooter, Super Fighter, Penta, Axelay, and Poly will also be unlocked, depending on how well you performed in your cleared saved game. You can clear the game on the same file repeatedly to unlock more planes.

Unlock Ellen McNichol:
Focus the game play with Ken. Every time you see Albert, shoot him down. Try shooting him down in every mission. If done correctly, Ellen will be unlocked for the space missions. Ellen has planes such as the Bird Of Prey.
User Cheat by Reese3131

Completion bonuses:
Finish the game, then start another game with your file to begin with all airplanes (including bonus planes), medals, money, stats, FMV sequences, and replay levels that were previously unlocked. You can also view all the characters in a gallery.

Getting easy money:
To earn double money, kill enemies using the machine gun (not missiles or bombs). You can use those weapons to damage enemies, but the last hit must be delivered by the machine gun. Some air enemies will give more than double the money. When you finish the mission you will see the scoreboard, showing the enemies you killed with the machine gun with double of the money than normally awarded.
User Cheat by samsung

Self-destruct in the Vic Viper:
While flying the Vic Viper, pause your game then press Up(2), Down(2), Left, Right, Left, Right, X, Circle. The Vic Viper will self-destruct when the game is resumed.