| Tail Number / N-Number | N139X |
| Manufacturer | WESTON PETER A |
| Model | SONEX |
| Year Built | 2008 |
| Manufacturer's Serial Number | 1066 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | JABIRU |
| Engine Model | 3300 |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 120 hp (90 kW) |
| Kit Manufacturer | SONEX AIRCRAFT LLC |
| Kit Model | SONEX |
| Type of Registrant | Individual |
| Owner Name | WESTON PETER A |
| Street | 1003 MADISON AVE |
| City | FORT ATKINSON |
| State | WI |
| Zip Code | 53538-1381 |
| Region | Great Lakes |
| County | Jefferson County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2008-11-06 |
| Certificate Issue Date | 2014-06-25 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-06-30 |
| Status | Valid Registration |
| Mode S Code | 50117255 |
| Mode S Code Hex | A09EAD |