Single stone ten years ago with no current symptoms, you shouldn't have a problem. Here's the FAA guidance: https://www.faa.gov/about/office_or...e/guide/media/kidneystonedispositiontable.pdfThank you. I had a tiny kidney stone 10 years ago. I don't want this to become a huge deal otherwise I will just get my sport pilot cert. My wife won't fly with me anyway, I would just like to fly at night and get my IFR rating but not at the risk of not flying.