| Tail Number / N-Number | N21CH |
| Manufacturer | BEECH |
| Model | E35 |
| Year Built | 1954 |
| Manufacturer's Serial Number | D-3724 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | E225 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 225 hp (168 kW) |
| Average Cruising Speed | 131 miles per hour |
| Type of Registrant | Co-Ownership |
| Owner Name | SIEVERT STEPHEN L SR |
| Other Names |
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| Street | 22834 W CHARLOTTE RD |
| City | PLAINFIELD |
| State | IL |
| Zip Code | 60586-9005 |
| Region | Great Lakes |
| County | Will County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1956-05-15 |
| Certificate Issue Date | 1990-11-05 |
| Last Action Date | 2021-08-31 |
| Expiration Date | 2028-12-31 |
| Status | Valid Registration |
| Mode S Code | 50333543 |
| Mode S Code Hex | A1B763 |