All campaign missions and planes:
     Hold  L2 + R2 at the main menu then quickly press Square, L1, R1,
Triangle, Triangle, R1, L1, Square.

Invincibility:
     Press  Start  to  pause game play, then hold L2 and quickly press
Square,  Triangle,  Triangle,  Square.  Release  L2,  then hold R2 and
quickly  press  Triangle, Square, Square, Triangle. Release R2. Repeat
the code to disable its effect.

Increased damage by weapons:
     Press  Start  to  pause game play, then hold L2 and quickly press
L1,  L1,  R1.  Release  L2, then hold R2 and quickly press R1, R1, L1.
Release R2. Repeat the code to disable its effect.