| Tail Number / N-Number | N821RJ |
| Manufacturer | TUDOR JOHN |
| Model | KITFOX IV |
| Manufacturer's Serial Number | 1161 |
| Aircraft Type | Fixed wing single engine |
| Category | Amphibian |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | SULLIVAN CHRISTOPHER M |
| Street | 27701 CRITTER CROSSING |
| City | HARVEY |
| State | AR |
| Zip Code | 72841 |
| Region | Southwestern |
| County | Scott County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2003-11-08 |
| Last Action Date | 2021-12-13 |
| Expiration Date | 2029-01-31 |
| Status | Valid Registration |
| Mode S Code | 52633022 |
| Mode S Code Hex | AB3612 |