LHX Attack Chopper Codes -

Full ammunition and fuel:
Press [Ctrl] + R.

Change shape:
Press [Ctrl] + U, then use an exterior view to look at the helicopter.

Invincibility:
Start a game in practice mode. Take off and fly towards the nearest hanger and intentionally crash into it. Press [Ctrl] + Q before the helicopter hits the floor. Once back at the main menu. start any desired mission. Switch to the external view, then return to the internal view. Take off and complete mission with no enemies noticing you. Note: Crashing into hills and terrain is still harmful.

Hidden teleport:
Fly an Osprey through the mountains near the south-west corner of the Vietnam scenario. Fly through the black rectangle floating in the sky at this location to teleport to the middle of friendly territory at an altitude of 1,500 feet.