| Tail Number / N-Number | N57KS |
| Manufacturer | SORENSON |
| Model | DEFIANT |
| Year Built | 2005 |
| Manufacturer's Serial Number | 86 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Individual |
| Owner Name | SORENSON STEPHEN K |
| Street | 11133 GLADE DR |
| City | RESTON |
| State | VA |
| Zip Code | 20191-4706 |
| Region | Eastern |
| County | Fairfax County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2005-10-12 |
| Certificate Issue Date | 2005-08-05 |
| Last Action Date | 2020-09-16 |
| Expiration Date | 2028-02-29 |
| Status | Valid Registration |
| Mode S Code | 51646402 |
| Mode S Code Hex | A74D02 |