All planes:
While playing a game, press Y, X, B, Y, Black. If you entered the code correctly, you will hear a sound.

Super primary weapon:
While playing a game, press B, X, A, B, Black. If you entered the code correctly, you will hear a sound.

$5,000:
While playing a game, press A, Y, A, Y, Black. If you entered the code correctly, you will hear a sound.

10 tokens:
While playing a game, press X, B, X, B, Black. If you entered the code correctly, you will hear a sound.

Ultra Hard difficulty setting:
While playing a game, press X, B, A, X, Black. If you entered the code correctly, you will hear a sound.

Easter Egg in Arixo:
When you first get to Arixo, fly west until you see a landing strip by an outhouse. Land there for a surprise.

Artist names in Chicago:
Look closely at the billboards to see the names of all the lead artists on them.

Fasa Studios logo in Boss battle:
During the Boss in a large open field, you can see the Fasa Studios logo appearing in the field looking like a crop circle.

Airplane stats:

Brigand (Fairchild F6-11)

• Defense: 7
• Speed: 1
• Firepower: 9
• Primary weapon: Four machine guns
• Secondary weapon: Seeking missiles

Bulldog (Hughes Aviation)

• Defense: 2
• Speed: 9
• Firepower: 6
• Primary weapon: Machine gun
• Secondary weapon: Shotgun

Constable (ISA Motors Ltd)

• Defense: 3
• Speed: 7
• Firepower: 3
• Primary weapon: Machine gun
• Secondary weapon: Single stream machine gun

Coyote (Ravenscroft)

• Defense: 4
• Speed: 6
• Firepower: 6
• Primary weapon: Machine gun
• Secondary weapon: Seeking incendiary missle

Dauphin (Dassault S-30)

• Defense: 6
• Speed: 3
• Firepower: 7
• Primary weapon: Guns
• Secondary weapon: Rockets

Desert Fox (Ravenscroft)

• Defense: 2
• Speed: 8
• Firepower: 5
• Primary weapon: Machine gun
• Secondary weapon: Spread missiles

Doppleganger (Grumman E-3C)

• Defense: 8
• Speed: 1
• Firepower: 8
• Primary weapon: Single blast gun
• Secondary weapon: Seeking missiles

Devastator (Hughes Aviation)

• Defense: 5
• Speed: 5
• Firepower: 6
• Primary weapon: Machine gun
• Secondary weapon: Seeking missiles

Dust Devil (Sanderson BP1)

• Defense: 4
• Speed: 5
• Firepower: 4
• Primary weapon: Machine gun
• Secondary weapon: Single stream machine gun

Mini-Gyro (Fassenbeinders)

• Defense: 1
• Speed: 2
• Firepower: 1

Pirhana (FW 21)

• Defense: 5
• Speed: 4
• Firepower: 7
• Primary weapon: Machine gun
• Secondary weapon: Electric arc

Special moves:

• Back Stall Loop: Click Right Analog-stick, press Left Analog-stick Down, Right Analog-stick Forward, Left Analog-stick Down.
  

• Barrel Roll Left: Click Right Analog-stick, press Left Analog-stick Left, Right Analog-stick Right, then release.
  

• Barrel Roll Right: Click Right Analog-stick, press Left Analog-stick Right, Right Analog-stick Left, then release.
  

• Double Barrel Roll Left: Click Right Analog-stick, press Left Analog-stick Left, Right Analog-stick Right , then hold.
  

• Double Barrel Roll Right: Click Right Analog-stick, press Left Analog-stick Right, Right Analog-stick Left, then hold.
  

• Double Snap Roll Left: Click Right Analog-stick, hold Left and Right Analog-sticks Left.
  

• Double Snap Roll Right: Click Right Analog-stick, hold Left and Right Analog-sticks Right.
  

• High Speed Yo-Yo: Click Right Analog-stick, press Left Analog-stick Down, Right Analog-stick Up, Left Analog-stick Up.
  

• Immelman: Click Right Analog-stick, press Left and Right Analog-sticks Down.
  

• Power Climb: Click Right Analog-stick, press Left Analog-stick Down, Right Analog-stick Up, then release.
  

• Snap Roll Left: Click Right Analog-stick, press Left and Right Analog-sticks Left, then release.
  

• Snap Roll Right: Click Right Analog-stick, press Left and Right Analog-sticks Right, then release.
  

• Snap Turn: Click Right Analog-stick, press Left Analog-stick Up, Right Analog-stick Down.
  

• Split-S: Click Right Analog-stick, press Left and Right Analog-sticks Up