User talk:Avi A

July 2018
Hello, I'm BilCat. Your recent edit to the page Concorde appears to have added incorrect information, so it has been removed for now. If you believe the information was correct, please cite a reliable source or discuss your change on the article's talk page. If you would like to experiment, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. See WP:MACH for why Mach number varies according to altitude and other factors. BilCat (talk) 08:50, 8 July 2018 (UTC)