| Tail Number / N-Number | N40KF |
| Manufacturer | THORNBERG BRADLEY CURTIS |
| Model | KITFOX IV |
| Manufacturer's Serial Number | 1563 |
| 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 | ROTAX |
| Engine Model | 912UL |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 80 hp (60 kW) |
| Type of Registrant | Individual |
| Owner Name | PIERCE CHARLES A |
| Street | PO BOX 333 |
| City | YELM |
| State | WA |
| Zip Code | 98597-0333 |
| Region | Northwest Mountain |
| County | Thurston County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2009-08-25 |
| Certificate Issue Date | 2008-06-25 |
| Last Action Date | 2020-06-22 |
| Expiration Date | 2027-07-31 |
| Status | Valid Registration |
| Mode S Code | 51125457 |
| Mode S Code Hex | A4AB2F |