Special test version of S-61F (SH-3A) with stub wings, 2x turbo jet engines, and revised fuselage shape for high speed trials. 
List of Operators of Sikorsky NH-3A | |
| From | Organisation with model NH-3A | |||||
| 1961 |
| |||||
Construction Numbers | Help Us | |
| C/N | Year | History | ||
| 61-011 | 1959 |  148033 : hss-2 Sikorsky S-61A c/n 61-011 ff 1959; del USN as YHSS-2 14+ redesig NH-3A Oct62; ff as NH-3A 21May65, achieved top+ soc 08aug73 | ||