I just discovered this little trick a couple days ago while messing around in FMB.
I've often wanted to have a crashlanded plane for a scenario, but was not satisfied with the "crashed' plane just parking on the ground with gear in place and looking undamaged. After messing about a bit (and a quick thanks here to Chris Blair and his WTCF campaign which got me thinking about this scenario a bit more) I found a good way to do it:
Place an aircraft somewhere you'd want it to be crashed with NO FUEL and HEIGHT 0.
Give it a second waypoint which would decide the direction it will travel in, HEIGHT 0 as well.
On the plane's first waypoint, make SPEED 0.
Do the same to second waypoint.
You will see that the first waypoint speed defaults back to what I assume is a minimum takeoff speed(normally 150-165km/h), DON't WORRY, this is perfect for what we have in mind!
Now in FMB start the mission a few times to see where your aircraft is landing.
It's easy to go to the aircraft at this point, Ctrl-F2 or Shift-F2, no need even for a static camera!
According to my testing, the aircraft will do a pretty good job of a crashland, slowing down quickly enough to not be too damaged, but generally taking landing gear and prop damage.
Perfect for a crashland!
If you go one step further, take careful note of the spot the plane comes to rest.(This will always be within the same spot, give or take a metre or two)
You can then add smoke, fire to your liking on this spot, and Voila! You should have a crashlanded plane!
I'm not a regular on the mission builder's forum, so please don't **** me if this idea came out long ago. I've never seen it, so here it is.
Hope it helps someone out, feedback welcome!
Tested on several maps and with several planes from bombers to fighters, no problems so far, but I haven't tested it completely!
To those who will make use of this idea, ENJOY!