| Tail Number / N-Number | N4821U |
| Manufacturer | CESSNA |
| Model | 210-5A |
| Year Built | 1963 |
| Manufacturer's Serial Number | 205-0521 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | I0-470 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 260 hp (194 kW) |
| Average Cruising Speed | 141 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | SOUTH SIDE CORP |
| Street | PO BOX 87 |
| City | CODY |
| State | NE |
| Zip Code | 69211-0087 |
| Region | Central |
| County | Cherry County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1963-12-06 |
| Certificate Issue Date | 1997-09-29 |
| Last Action Date | 2021-03-19 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 51371225 |
| Mode S Code Hex | A5F295 |