[Bryan24]

I'm sitting here at MSFC wondering about this.

Could there have been a "break" in the insulation, allowing moisture to get in behind the insulation allowing ice to build up?

And then it was actually a chunck of ice, not insulation that hit the the underside of the wing?

[John Jamieson]

We don't know Bryan, it's just speculation. But January at KSC is a great time to form ice on the outside of the insulation. Any cracks would make it even worse.