Red14, he animated plane is a whopping 9MB download and so you get a black background before the GIF is fully loaded.
9MB is a disaster for any website.

I have hashed a mockup of the same sort of mechanism using an animated SVG file, which does not have any real payload.

SVG - Animated Plane.xar.

Do note, this is not your solution. It is a simple demonstrator of what should be done.

I hope there is a TGer out there who is more versed in SVG animations that I am.
If not, I am sure you could learn enough to make it tidier for your specific need.

Acorn