| Tail Number / N-Number | N221TM |
| Manufacturer | DAVIS JR WILLIAM R |
| Model | RV-4 |
| Year Built | 1997 |
| Manufacturer's Serial Number | 3974 |
| 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-360-A1A |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | LLC |
| Owner Name | TAILDRAGONS LLC |
| Street | 3339 CENTRAL AVE NE UNIT 325 |
| City | ALBUQUERQUE |
| State | NM |
| Zip Code | 87106-1461 |
| Region | Southwestern |
| County | Bernalillo County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2021-03-25 |
| Certificate Issue Date | 2015-09-01 |
| Last Action Date | 2021-04-19 |
| Expiration Date | 2028-09-30 |
| Status | Valid Registration |
| Mode S Code | 50363155 |
| Mode S Code Hex | A1E66D |