I may have the name wrong.

It is just a passenger jet with no interior. And it flies in a sinusoidal path. So, on the downward side, everyone in the plane is weightless. There are all kinds of ThemTube videos with people doing all kinds of amazing things.

And there are videos calling out all kinds of errors in these productions made by NASA and china.
There really are air bubbles (because some are filmed underwater) and there are reflection and CGI errors.

What is the worst, is that there is a community that points out all these errors, and then NASA fixes them.