On Tuesday, September 8, 2020 at 10:36:24 PM UTC-6, Mike Reid wrote:
Sounds like you encountered St. Elmo's Fire, which is quite common when flying through dry precipitation like snow or ice crystals. If it had been dark, you would have seen the sparks to go along with the clicking sound.

https://www.youtube.com/watch?v=7huPWGX-yz0

Mike

Mark Keene recently posted a great video of this on his Facebook page.