User talk:2601:2C1:8801:4C20:28D6:5B7B:44D4:81CA

September 2021
Hello, I'm BilCat. I wanted to let you know that one or more of your recent contributions&#32;to National Advisory Committee for Aeronautics have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Teahouse. Thanks. BilCat (talk) 01:40, 11 September 2021 (UTC)