| Manufactor Serial Number | Type | Serial / Registration Number | Owner | Fate |
| 1 | Kassel 12A | 13 | Finland Air Force | |
| Kassel Zogling | HM536 | Royal Air Force (Army / Navy Inc) | ||
| Kassel Prufling | HM538 | Royal Air Force (Army / Navy Inc) | ||
| Kassel Sailplane | HM586 | Royal Air Force (Army / Navy Inc) | ||
| Kassel 20a | I-PQVT | Civil Owner | ||
| 1011 | Kassel glider | NC839N | Civil Owner | |
| 32 | Kassel WLV H-2 | NC857Y | Civil Owner | |
| Kassel 20 | OY-74 | Civil Owner | ||
| Kassel 12A | YR-ACP | Civil Owner | ||
| Kassel 20 | YR-ACR | Civil Owner | ||