| Tail Number / N-Number | N221RB |
| Manufacturer | BRUCE ROBERT A |
| Model | RV-4 |
| Year Built | 1992 |
| Manufacturer's Serial Number | 1157 |
| 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-320-D3G |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 160 hp (119 kW) |
| Type of Registrant | Individual |
| Owner Name | RAMSTAD CRAIG R |
| Street | PO BOX 870 |
| City | MINDEN |
| State | NV |
| Zip Code | 89423-0870 |
| Region | Western-Pacific |
| County | Douglas County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2007-10-11 |
| Certificate Issue Date | 2023-01-31 |
| Last Action Date | 2023-02-11 |
| Expiration Date | 2030-01-31 |
| Status | Valid Registration |
| Mode S Code | 50363061 |
| Mode S Code Hex | A1E631 |