Bit of an odd bug, but the Cargo Plane doesn't visually lift off, but what's interesting is the Carbon Fiber version works properly. I unfortunately don't have much other information to go off of.

It might be because you are not moving fast enough with the Cargo Plane to see the lift off animation. I gave it a try and I had to use nuclear fuel before it could move fast enough

You could ask the aircraft author to change the shadow settings if you are interested

Thank you. I tried poking around to understand how the mod manipulates the shadow or the item to simulate depth, but was having a difficult time.