The following are known Action Replay Codes for Aero the Acro-bat on Nintendo Game Boy Advance (GBA).
These codes were also known as GameShark Codes and in most cases will work on both devices.

These codes are for the U.S. version of the game.

Master Code – Must Be On
ecab66fe
640bced7
388ce2eb
07c9d75e

Infinite Health
a97c12ea
4e903176

Infinite Time
dfcb96b2
53881e2f

Infinite Stars
d1844240
cc3cb8b5

Infinite Jumps/Float
7921a2dd
d1664db4

Infinite Lives
a9350c1a
b1793784

Infinite Silver Star
8031ce7d
92abc61f

Max Score
92bdb62c
612bc9ca
3b4b5a92
30f74ee9

Freeze Background
0cb9f007
53276c5b