Infinity Code
First, choose game start from the main menu. Now choose training from the game menu, then from the training screen choose Wolves Awakening. Start the training mission, increase your speed and head 10 degrees north. Keep going north until you see a large yellow dot on the radar. Switch to air to ground missles and fire at the mountain that locks. You should see a pile of gold bars. Get a missle lock and destroy the gold. Go ahead and crash yourself and start back in the game menu. Once you wreck, you will see the word "INFINITY" where the aircraft icons used to be on the continue game screen.

Plane Chase view:
press and hold L1 L2 R1 and R2 while selecting your plane (x button), continue to hold the top 4 buttons until the game starts then tap select until the new view appears.

Missiles
After you've chosen your plane, when the Now Loading screen appears, press and hold L1+L2+R1+R2 and rotate the D-Pad couter-clockwise.
When the game starts you will be invincible against air-to-air missiles.

Maximum Time
After you have chosen your plane, when the Now Loading screen appears, press and hold L1+L2+R1+R2+Square+Triangle+O+X+Left. Keep the buttons held down until the mission starts and you'll have 999 on the timer.
The cheats ( should ) work on the USA version.....?

REAR CHASE PLANE VIEW ( a la AIR COMBAT):
When selecting your plane in either MISSION or TRAINING mode....
Highlight the plane you wish to fly....then press and HOLD
L1 + L2 + R1+ R2 + SELECT then press START.
The game will begin and press SELECT to change views.

MAKE ALL SORTIES SELECTABLE (MISSION MODE):
In MISSION mode: when you are looking at the world map.... press the following... U-D-D-R-L-D-U-THEN TRIANGLE. You will hear a guy say "GONE!!"

MAKE ALL PLANES SELECTABLE (MISSION MODE):
In MISSION mode when you are at the plane select screen... press the following L-L-R-D-U-D-R-THEN SELECT. You will hear a guy say "GONE!!"