Last we had seen it (well technically someone who shouldn't have gone backstage with a camera) and this was back in the summer of 2018, it was backstage at Hollywood Studios where the Backlot Tours used to be. We didn't hear anything about them moving it since then, but chances are, if it's been moved, Disney wouldn't be telling us publicly for two reasons. First, we were never publicly told where it was in the first place and second, if they moved it because they were worried about it being stolen (which is pretty unlikely to move unnoticed since it is a plane hull after all) or of it being vandalized/damaged by them, they wouldn't say it publicly because then whoever stole it if it was actually stolen would have that info to their advantage.