Maybe more like a heading bug: https://aviation.stackexchange.com/questions/23166/what-is-the-use-of-heading-bug https://aviation.stackexchange.com/questions/2

Maybe more like a heading bug: https://aviation.stackexchange.com/questions/23166/what-is-the-use-of-heading-bug https://aviation.stackexchange.com/questions/23166/what-is-t...