Top Gun: Combat Zones Cheats for GameCube

Platform: Gamecube
Enter SHPONGLE as a name to unlock all aircraft and levels. Note: The effects of the code will be disabled if the game is saved. Aircraft:
Platform: Gamecube
On all levels that contain multiple aircraft bogies, the best solution is to wipe out all aircraft by flying low to the ground, then pulling up on the stick to get a missile lock to destroy them. Take one bogie out at a time, then fly back close to the ground and start the process all over again. Anti-aircraft guns:
Platform: Gamecube
Flying close to the ground causes the anti-aircraft guns to overshoot your plane. They cannot fire below a certain point due to the risk of hitting their own men.
Weapons:
Platform: Gamecube
While speed in completing missions, extent of damage to your jet, and "First Blood" bonuses help, they will never allow you to gain the points and medals to open new jets. The key to points is ammunition choice. Try to use only guns for everything, saving all the missiles and bombs possible. If you must use missiles, use the self aimed, not the guided. The more bombs and missiles you return with, the higher the scores. By doing this it is possible to advance from the normal 300,000 to 400,000 red star success to consistent scores of over 2 million per mission. Flying:
Platform: Gamecube
As the missions gain in complexity, every fly over must be highly efficient. Instead of tight sweeping turns, use over-the-top turns. This can cut a 10 second turn down to 3 seconds and place you in a better attack mode to start the next run. This requires practice. Destroy tanks, vans and most moving ground targets:
Platform: Gamecube
Use the afterburners when you are close to the ground. Note: This will not work on BTROs or gunboats (it will just do damage).

If you enter this cheat you will get everything. The cheat is SHPONGLE. You have to enter this code as a user name

Ok in the beginning go a few feet away from your target then go up until the plane dives down automaticlly, you'll be directly under your target press L and start shooting ( anti-aircraft guns can't shoot directly above them so at your view they would be shooting at nothing at all!!).

Hoped I helped!!!!!!!!!!!

Anti-aircraft guns:
Fly close to the ground which causes the anti-aircraft guns to overshoot
your plane. They cannot fire below a certain point as they risk hitting
their own men.