<p>c/n 61.711.
Built 1973.
Operated by CHI Aviation, previously known as Construction Helicopters Inc.
I first saw this S-61 in 1995 when she was operating for British International Helicopters in the UK as G-BBUD.
Sacramento McClellan Airport, CA.
</p>
5th March 2016
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/65001151@N03">Alan Wilson</a> from Stilton, Peterborough, Cambs, UK
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/ajw1970/30233097386/">Sikorsky S-61N ‘N905CH’</a>