The position light and aileron aerodynamic balance horn (also called aerodynamic balance, or aileron overhang) on the left wing of an ATR 72 aircraft.
<a href="//commons.wikimedia.org/wiki/User:Ariadacapo" title="User:Ariadacapo">Olivier Cleynen</a>
2013-02
<span class="int-own-work" lang="en">Own work</span>