This model is a version of S-56 H-37
Helicopter Sikorsky H-37A Mojave Serial 56-053 Register 55-625 used by US Army Aviation. Built 1957. Aircraft history and location
| US Army Aviation |
|1957-12-13||Sikorsky S-56, c/n 56-053, ff:?|
del US ARMY as H-37A, 55-625, 13Dec57
redesig CH-37A, Oct 62
conv CH-37B, unk
wfu & soc unk.