| Tail Number / N-Number | N223GX |
| Manufacturer | ALONSO GREGORIO F |
| Model | ONEX |
| Manufacturer's Serial Number | 001 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Kit Manufacturer | SONEX AIRCRAFT LLC |
| Kit Model | ONEX |
| Type of Registrant | Individual |
| Owner Name | ALONSO GREGORIO F |
| Street | 4005 MICHAEL ROAD SOUTH |
| City | ANN ARBOR |
| State | MI |
| Zip Code | 48103 |
| Region | Great Lakes |
| County | Washtenaw County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2015-09-15 |
| Last Action Date | 2021-04-12 |
| Expiration Date | 2028-09-30 |
| Status | Valid Registration |
| Mode S Code | 50366322 |
| Mode S Code Hex | A1ECD2 |