The following are known Action Replay Codes for Chopper Attack on Nintendo 64 (N64).

Device Compatibility: Action Replay & GameShark

Infinite Fuel
80129A15 0012

Infinite Shield
811299B8 0380

Infinite Fifth Weapon
8012973B 00FF

Infinite Second Weapon
8012972F 00FF

Infinite Third Weapon
80129733 00FF

Multiple Shots
80129A13 0004

Infinite Fourth Weapon
80129737 00FF

Infinite First Weapon
8012972B 00FF