When a plane shoots out Arrows and Fire Charges, some collide with the plane and may destroy it.

I tested it with Fire Charges and it didn't break the plane. I also tested Arrows with the Large Plane and it didn't break it.

I tested again and both Arrows and Fire Charges damage both Planes and Long Planes when they are going at full speed. It probably happens because of the plane's speed, it's faster than arrows and fire charges when gunpowder is used at the same time.

The same happens with Helicopters at full speed.

The same happens with fireworks.