User talk:103.155.222.191

November 2021
Hello, I'm Materialscientist. I wanted to let you know that I reverted one of your recent contributions—specifically this edit to History of aviation—because it 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 Help desk. Thanks. Materialscientist (talk) 05:59, 13 November 2021 (UTC)

Notification: Blocked
 You have been blocked from editing for a period of 31 hours for Vandalism. Once the block has expired, you are welcome to make useful contributions. If you think there are good reasons why you should be unblocked, you may request an unblock by first reading the guide to appealing blocks, then adding  below. Materialscientist (talk) 05:59, 13 November 2021 (UTC)