| Tail Number / N-Number | N921DK |
| Manufacturer | KNOLL RICHARD J |
| Model | KITFOX IV |
| Year Built | 1994 |
| Manufacturer's Serial Number | 1401 |
| 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 | BOMBARDIER |
| Engine Model | ROTAX (ALL) |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | KNOLL RICHARD J |
| Street | 10067 MORRISH RD |
| City | SWARTZ CREEK |
| State | MI |
| Zip Code | 48473-9127 |
| Region | Great Lakes |
| County | Genesee County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1994-08-17 |
| Certificate Issue Date | 1994-02-02 |
| Last Action Date | 2022-03-18 |
| Expiration Date | 2029-08-31 |
| Status | Valid Registration |
| Mode S Code | 53141066 |
| Mode S Code Hex | ACC236 |