Stearman Aircraft/Northrop Alpha 4-A registrations
1 Stearman Aircraft/Northrop Alpha 4-A aircraft on the FAA register (FAA model ALPHA 4-A), newest first.
| N-number | Year | Aircraft |
|---|---|---|
| N990NC | — | Stearman Aircraft/Northrop Alpha 4-A |
Source: FAA Aircraft Registry, October 2026. Each N-number links to its aircraft page with registration record, history and accident data.
