We cleaned the sign thoroughly and purchased two new letter display sheets from Bee-Line signs in Welland.
The owner was very helpful and event gave us a couple ground pegs to fasten the sign down more securely.
We installed the new panels on Tuesday January 25/2022 and they fit great; just a bit of a length trim needed to fit them inside the frame.
Repairs are not yet complete as it was very cold working in the hangar. Hopefully next week.