Bell 47s
We used to operate in Mocambique with various Bell 47,s all with litters on the skids to carry everything from explosives to casualties. The exception was the 47J2 which was the forerunner to the Jetranger. The contract we had was involved with the famous well fire near Beira which Red Adare put out.
The Mash aircraft are 47G3B1,s I think, which were supercharged so had better performance.