Development of S-51 design to meet Naval requirement for a utility helicopter, 2 prototypes built. The type was evaluated against the Piaseckli XHJP-1, which won the competition and was produced as the HUP-1 Retriever. 
List of Operators of S-53 XHJS |
Global Distribution of S-53 XHJS |
|
Construction Numbers |
| C/N | Built as | Year | History | |
|---|---|---|---|---|
| 53-001 | 1947 |  30368 | ||
| 53-002 | 1947 | 30370 | ||
