Trevor, Airborne was a US company and Van Nicholas was a separate company that ran the Airborne operation in Europe. Then the US owners ran into trouble and sold out to I think Huffy, who having bought it decided to close it. Well I guess we all do silly things sometimes on the spur of the moment. But nevertheless the owners of the Airborne brand didn't want to use that name.
So as Van Nicholas' business was profitable but they couldn't use the Airborne name, they just carried it on under their own name, buying the frames etc from the same builder as before. The frames are and always were made in Russia, utilising redundant aero-industry expertise, and I've heard very little other than positive comment about them.