| Tail Number / N-Number | N831MX |
| Manufacturer | WILLIAM T KERCHNER |
| Model | SONEX |
| Year Built | 2020 |
| Manufacturer's Serial Number | SNX-1723 |
| 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 | CORVAIR |
| Engine Model | 120 |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 120 hp (90 kW) |
| Type of Registrant | Individual |
| Owner Name | KERSHNER WILLIAM T |
| Street | 675 WASHINGTON ST |
| City | ROYERSFORD |
| State | PA |
| Zip Code | 19468-2415 |
| Region | Eastern |
| County | Montgomery County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2020-09-03 |
| Certificate Issue Date | 2020-08-10 |
| Last Action Date | 2020-08-10 |
| Expiration Date | 2027-08-31 |
| Status | Valid Registration |
| Mode S Code | 52656472 |
| Mode S Code Hex | AB5D3A |