While flying a Schweizer 1-34 over San Francisco Bay, I noticed the aircraft would pilot itself in a spiral, apparently quite stably. This talk follows up that observation. I discuss why the effect might be expected, and present videos showing it from several flights in different aircraft, powered and unpowered, real and simulated. I am continuing to investigate and publicize the phenomenon, with the aim of getting it into the toolbox of every pilot in the world. Session type: Forum · Interests: General Aviation; Safety — Skyfarer is not affiliated with the Experimental Aircraft Association (EAA) or EAA AirVenture Oshkosh. This session is listed for informational purposes from the official AirVenture 2026 schedule. Times and locations can change during the event — verify on the official session page: https://events.rdmobile.com/Sessions/Details/3527194