Atmospheric icing on a CFM56 engine during a commercial flight. A thin ice layer has accumulated on the inlet leading edge of the turbofan duct as the aircraft flew through a cloud layer in icing conditions.
<a href="//commons.wikimedia.org/wiki/User:Ariadacapo" title="User:Ariadacapo">Olivier Cleynen</a>
<span class="int-own-work" lang="en">Own work</span>