Homebuilt X4 registrations
1 Homebuilt X4 aircraft on the FAA register (FAA model X4), newest first.
| N-number | Year | Aircraft |
|---|---|---|
| N5597N | 1980 | Homebuilt X4 |
Source: FAA Aircraft Registry, October 2026. Each N-number links to its aircraft page with registration record, history and accident data.
