Known as the Model K-240 by Kaman. 
List of Operators of HTK-1 / TH-43 |
| Years | Model | Org | |
|---|---|---|---|
| 1951/57 |  US Navy |
Global Distribution of HTK-1 / TH-43 |
|
Construction Numbers |
| C/N | Year | History | |
|---|---|---|---|
| 4-1 | 1951 | 128653 | |
| 4-4 | 128656,N1269V | ||
| 4-8 | 128660 | ||
| 4-9 | 129300 | ||
| 4-11 | 129302,N74017 | ||
| 4-13 | 129304,N6060C | ||
| 4-22 | 1953 | ,129313,N6062C | |
| 4-26 | 129317,N7801B |
