| Tail Number / N-Number | N4021N |
| Manufacturer | CESSNA |
| Model | 120 |
| Year Built | 1947 |
| Manufacturer's Serial Number | 13479 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | C85 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 85 hp (63 kW) |
| Average Cruising Speed | 90 miles per hour |
| Type of Registrant | Individual |
| Owner Name | BIELECKI GERALD M |
| Street | 430 35TH CT SW |
| City | VERO BEACH |
| State | FL |
| Zip Code | 32968-3125 |
| Region | Southern |
| County | Indian River County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Certificate Issue Date | 2021-01-25 |
| Last Action Date | 2021-01-25 |
| Expiration Date | 2028-01-31 |
| Status | Valid Registration |
| Mode S Code | 51133227 |
| Mode S Code Hex | A4B697 |