The <a href="https://en.wikipedia.org/wiki/Great_Lakes_Sport_Trainer" class="extiw" title="en:Great Lakes Sport Trainer">Great Lakes 2T-1A-2 Sport Trainer</a> PH-GLT (c/n 6710J-342) during the Stampe Fly In 2010. The Sport Trainer is an American biplane trainer and aerobatic aircraft. It was produced in large numbers before  the Great Depression in 1933. It was placed back into production in the 1970s.
<a href="//commons.wikimedia.org/wiki/User:AdMeskens" class="mw-redirect" title="User:AdMeskens">Ad Meskens</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>