Piasecki HUP-3 Army Mule / H-25A Retriever
Pima Air and Space Museum, Tucson, Arizona, USA
February 21, 2008
The U.S. Army version of this aircraft was designated the H-25 Army Mule while the U.S. Navy version was designated HUP-3. The H-25 designation was adopted by all in 1962. Piasecki changed its name to Vertol at a later date, Vertol was purchased by Boeing in 1960 and became Boeing-Vertol.
