Gurney flaps on both sides of the trailing edge of the right horizontal stabilizer, on an Airbus Helicopters H135 (formerly Eurocopter EC135)
<a href="//commons.wikimedia.org/wiki/User:Ariadacapo" title="User:Ariadacapo">Olivier Cleynen</a>
<span class="int-own-work" lang="en">Own work</span>