Known as the Model K-240 by Kaman. 
List of Operators of Kaman HTK-1 / TH-43 | |
| From | Organisation with model HTK-1 / TH-43 | |||||
| 1951 |
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| Construction Numbers on database of HTK-1 / TH-43 | ||||||
| ||||||
Construction Numbers | Help Us | |
| 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 |