My wife is on US Air flight 3778. It took off from PHL and 27 minutes later landed. She texted me to say that the returned to PHL because they “Lost a piece of de-icing equipment”. I caught a bit of the tower chatter, and the tail number of the plane is 423AW.
I know nothing of the aircraft other than this tidbit from google… aerospace-technology.com/projects/crj200/
“The windscreen and cockpit side windows are fitted with electric de-icing systems.”