| Tail Number / N-Number | N478SX |
| Manufacturer | OLSON HAROLD D |
| Model | SONEX |
| Year Built | 2004 |
| Manufacturer's Serial Number | 478SX |
| 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 | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Kit Manufacturer | SONEX LTD |
| Kit Model | SONEX |
| Type of Registrant | Individual |
| Owner Name | OLSON HAROLD D |
| Street | 18414 WHITACRE CIR |
| City | HUDSON |
| State | FL |
| Zip Code | 34667-5566 |
| Region | Southern |
| County | Pasco County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2004-07-07 |
| Certificate Issue Date | 2017-12-05 |
| Last Action Date | 2020-10-09 |
| Expiration Date | 2027-12-31 |
| Status | Valid Registration |
| Mode S Code | 51360170 |
| Mode S Code Hex | A5E078 |