| Tail Number / N-Number | N509SX |
| Manufacturer | MADARIS MICHAEL G |
| Model | SONEX |
| Manufacturer's Serial Number | 509 |
| 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 |
| Type of Registrant | Co-Ownership |
| Owner Name | POWELL ARTHUR G |
| Other Names |
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| Street | 331 JESSUP RD |
| City | BINGEN |
| State | WA |
| Zip Code | 98605-9102 |
| Region | Northwest Mountain |
| County | Klickitat County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2012-05-18 |
| Certificate Issue Date | 2021-10-07 |
| Last Action Date | 2021-10-07 |
| Expiration Date | 2028-10-31 |
| Status | Valid Registration |
| Mode S Code | 51456405 |
| Mode S Code Hex | A65D05 |