Sikorsky YH-18A 49-2889
Four military versions of the civilian model
S-52-2 were supplied to the U.S. Army in 1949. In
the
event, the aircraft saw wider spread use with the U.S. Navy as the
HO5S-1 than it did with
the
Army. . Having said that, less than 100 were built in all. I
have an image of a civilianized one
(N8003E) in my
ex-Military Section. One of the YH-18As was converted to
the turbine powered
XH-39.