From 2024 (YouTube Edition): Clinic Aimed to Promote Safe Aircraft Control The EAA Pilot Proficiency Center hosted an angle of attack (AOA) training clinic during the 2024 Oshkosh Airventure. The event aimed to teach attendees about what AOA indicators are and how they can be used to improve flight safety. AOA indicators have been around from the beginning. Even the Wright brothers had their own makeshift version: a piece of yarn fastened to the leading edge of the wing. As flight has grown more advanced, aviators realized how crucial AOA indicators are and began to install them in modern aircraft. However, many existing pilots are unaware of how these instruments truly work.