Aircraft engine PW305, by MTU Aero Engines / Pratt &amp; Whittney Canada. (photographed in the main hall of the Airport Tempelhof, Berlin)
<a href="//commons.wikimedia.org/wiki/User:-jkb-" title="User:-jkb-">-jkb-</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>