It's a Navy Sikorsky H-5/HO3S. Here's a link to a history page:
http://www.korean-war.com/KWAircraft...korsky_h5.html

Mikey Rooney played a pilot who flew one in the movie "The Bridges at
Toko-Ri." I think the same helicopter was used in the 1957 movie, "The
Land Unknown" to fly into a volcano in Antartica to discover a prehistoric
land.



wrote in message
oups.com...
http://omnivoreink.com/TheThunderChi...helicopter.JPG

is the URL. I think it's a Sikorsky, but if I could get its full
designation I'd appreciate it.