First press ''T'' Then type one of the following to activate the cheat. (The code is on the left side of the :)
Unlimited ammunition: you got what i need
Reload weapons food: goes here
Refuel: big gulp
Invincibility: youre here forever
Disable crashes: damn that corner
Repair damage: chiliburger
Plane cannot be hit: spindive
Auto level and fly upside down: upside down
Paper airplane: paperairplane
Cannot crash on water: water boy
Display throttle: show throttle
Display speed in mach units: show mach
Display air speed: show velocity
Display ground speed: show ground speed
Display fuel usage: show fuel
Display fuel usage as %: show fuel usage
Display altitude in feet: show altitude
Display angle of attack: show aoa
Toggle blackouts: blackout
Toggle flameouts: flameout
Toggle flatspins: flatspin