American Aviation Historical Society

 
The Sikorsky R-4 would gain the distinction of being the first helicopter to be mass produced and the first one to serve the USAAC, USN and U.S. Coast Guard. Seen here is the XR-4 during naval testing. (USCG photo)

 

Photos and images found on this Web site are the property of the American Aviation Historical Society or have been reproduced with permission of the copyright holder.  They are presented here solely for your interest and education and may not be used or otherwise reproduced without the written permission of the American Aviation Historical Society.
[BACK]

Copyright © 2003-2017 American Aviation Historical Society