The Sikorsky S-52 (HO5S-1) at the Smithsonian's Udvar-Hazy center
<a href="//commons.wikimedia.org/w/index.php?title=User:Aaronx~commonswiki&amp;action=edit&amp;redlink=1" class="new" title="User:Aaronx~commonswiki (page does not exist)">Aaron Headly</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>