| Tail Number / N-Number | N645SX |
| Manufacturer | LEE JUSTIN W |
| Model | SONEX |
| Year Built | 2018 |
| Manufacturer's Serial Number | 645 |
| 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 | AEROVEE |
| Engine Model | 2180 |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 80 hp (60 kW) |
| Type of Registrant | Individual |
| Owner Name | SHEARER RONALD L |
| Street | 12028 W COUNTY ROAD 400 N |
| City | QUINCY |
| State | IN |
| Zip Code | 47456-9470 |
| Region | Great Lakes |
| County | Owen County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2018-05-17 |
| Certificate Issue Date | 2020-10-02 |
| Last Action Date | 2020-10-02 |
| Expiration Date | 2027-10-31 |
| Status | Valid Registration |
| Mode S Code | 52074564 |
| Mode S Code Hex | A87974 |