Interstate models
| Model, sort | Registered, sort | Years built, sort |
|---|---|---|
| Interstate S-1A-65F | 5 | 1941–1942 |
| Interstate S-1A-90F | 6 | 1941–1942 |
| Interstate S-1B1 | 23 | 1942–1993 |
| Interstate S-1A | 66 | 1941–1942 |
| Model, sort | Registered, sort | Years built, sort |
|---|---|---|
| Interstate S-1A-65F | 5 | 1941–1942 |
| Interstate S-1A-90F | 6 | 1941–1942 |
| Interstate S-1B1 | 23 | 1942–1993 |
| Interstate S-1A | 66 | 1941–1942 |