[ROCKLOBSTER]

Does that mean used to you?

No, but this does:

airframes from old MiG-29s that had been languishing in open storage at the Lukhovitsy factory.

That means they've been sitting outdoors, very likely corroding.

They may even have used airframes built for Iraq, way back in the late 1980s.

That means "used" to me.

[doorgunner69]

I read that as airframes built for planes to be sold to Iraq and maybe built up, but not necessarily flown. Semantics.

You may be right, it is not very clear what is meant, just that the airframes had been around for some purpose.