Models
| Model | Type | Registered | Valid | Built |
|---|---|---|---|---|
| COZY IV | Fixed wing single engine | 1 | 1 | ?-? |
1 models and 1 aircraft registered with the FAA under the manufacturer name HERZSTEIN DONALD L.
| Model | Type | Registered | Valid | Built |
|---|---|---|---|---|
| COZY IV | Fixed wing single engine | 1 | 1 | ?-? |