The nose radome is a composite with grounding straps. We had a loss of radome procedure at TWA but this Ice Air plane really didn't really loose very much. I would have been very reluctant to keep flying. What if a big chunk broke off at cruise speed and hit the tail or and engine?  :o

During an ocean crossing in a 707 back in the early 80's, we were at 370 flying through the tops of some cirrus when we rapidly built up a static charge that even in the daylight we could see a bright glow off the nose and static in the radios. There was a loud bang and a sphere of "plasma" about the size of a basketball appeared to come through the windshield and slowly move aft all the way back through the plane and vanish out the back of the plane. All the passengers siting on the isle saw it and were a bit taken by the display. None of us touched it and the whole thing was over in a few seconds.

http://www.unmuseum.org/notescurator/ball_lightning.htm   

Lou