Info:

This mod allows you to fly with a car/plane.
GTAForums.com Thread: http://www.gtaforums.com/index.php?showtopic=422672

Installation:

-Copy the "Fly Mod.net.dll" to \scripts\ folder in GTA IV directory
-You need the .Net ScriptHook (http://www.gtaforums.com/index.php?showtopic=392325)

Default controls (can be changed):

-Press F5 while in car to fly with your car
-Press F6 to fly with a plane

-W/S to accelerate/decelerate
-Left/Right arrow to roll
-Numpad 8/2 to pitch
-Numpad 7/9 to pitch/roll
-Numpad 1/3 to pitch/roll
-Numpad 5 to freeze position
-Shift to boost speed for a few seconds
-Q to switch between default camera and a cam which is behind the plane (plane mode only!)

-Type "fmreload" while ingame to reload all settings
-Type "fmconfig" to open a GUI where you can change the settings

If you find any bugs, please report them. Thanks

You can find the newest version here: GTAForums.com Thread: http://www.gtaforums.com/index.php?showtopic=422672.