| Tail Number / N-Number | N21BX |
| Manufacturer | SIAI-MARCHETTI |
| Model | SM 1019 |
| Manufacturer's Serial Number | MM57248-056 |
| 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 | ALLISON |
| Engine Model | 250-B15G |
| Engine Type | Turbo-prop |
| Number of Engines | 1 engine |
| Horsepower | 317 hp (236 kW) |
| Type of Registrant | Individual |
| Owner Name | COX ROBERT D |
| Street | PO BOX 602 |
| City | GIRDWOOD |
| State | AK |
| Zip Code | 99587-0602 |
| Region | Alaskan |
| County | Anchorage Municipality |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2017-02-17 |
| Certificate Issue Date | 2017-11-30 |
| Last Action Date | 2020-09-08 |
| Expiration Date | 2027-11-30 |
| Status | Valid Registration |
| Mode S Code | 50333530 |
| Mode S Code Hex | A1B758 |