Sorry I was being a plank, I forgot to save the mission before zipping it.
Anyway I've made it smoother now.
All the script does is pitch the plane upwards giving it more elevation.
The code is just calling the games inbuilt functions.
The code simply loops about 30 times increasing pitch 0.1 each time.
I forgot you should remove the hint format line it was just for reference.
To use the script in your mission just drop the two files pitchup and init into your saved mission folder and place a function module on the map.
To call the script just place
into a waypoint where you want the plane to get a bit more lift.