| Tail Number / N-Number | N499WB |
| Manufacturer | THARALDSON RON |
| Model | AK-DC |
| Manufacturer's Serial Number | 07001 |
| 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 | LYCOMING |
| Engine Model | O-360 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Kit Manufacturer | SMITH NICK DBA SMITH AVIATION |
| Kit Model | L21 |
| Type of Registrant | Individual |
| Owner Name | STENSON RYAN |
| Street | 70 WHITTIER ST |
| City | NEWTON |
| State | NH |
| Zip Code | 03858-3526 |
| Region | New England |
| County | Rockingham County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2009-03-15 |
| Certificate Issue Date | 2022-08-06 |
| Last Action Date | 2022-08-06 |
| Expiration Date | 2029-08-31 |
| Status | Valid Registration |
| Mode S Code | 51431575 |
| Mode S Code Hex | A6337D |