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Long description
This mod implements the mechanics of plane liftoff. With it planes from aircraft mod will not instantly aerial. When placed, they move around and collide like a car would. However, after the aircraft hits the speed of 88 mph, it initiates liftoff, if it manages to keep the speed for a particular length of runway (depends on the plane).
After covering the runway, the plane becomes aerial, (you'll see its shadow on the ground (actually, you'll see it over the plane itself, but that cannot be helped.).
In the airborne state plane behaves like plane would. Don't jump out of it, ever.
To perform landing, decrease speed, firstly plane will descend, then it will cover the same runway length as during the liftoff, then it can be stopped.
Liftoff parameters are individual: Jet and gunship are pretty unconstrained. Cargo plane will fail reach takeoff speed without concrete runway.

Pictures

When something goes wrong, you sometimes can note double planes. Least problematic occurrence is when there's no fuel. In worse cases you might have to rembuild the plane.

-add parachutes and falling planes

It is almost possible to use the mod as a library, however I was a bit lazy on that part.
Seeing how airplane mods are few, if you make one, contact me and I'll update this mod in a most braindead way to work with your mod as well.

Version history
0.1.0(26.08.16): Initial release
0.1.1(27.08.16): Changed number in json.
0.1.2(29.08.16): Bugfixing
0.1.3(29.08.16): More bugfixing
0.1.4(30.08.16): Updated mod to use aircraft 1.1.3 facilities.
0.1.5(31.08.16): Fixed shadow.
0.1.6(04.09.16): Fix for possibility of equipment loss.
0.1.7(28.01.17): Compatibility with programmable vehicles. Childern, destroying entities is bad coding.
0.1.8(30.01.17): Tweaked behaviors of planes.
0.1.9(12.02.17): Intermediate release for bugfixing

Well, this puts me completely at loss, I've tried it with all the car related mods in the pack and it didn't break.
Surely, there was one somewhat fickle assumption about naming but if that one doesn't holds the mod would not be able to function anyway.
I can't really be reassembling all the pack of yours, could you try this new version, and post contents of log file, related to the mod? (There should be several lines starting with "Litoff mod warning" "There was error processing entity")
That would shed some light on what is happening.
Does it also happen in a new game?