| Tail Number / N-Number | N209SF |
| Manufacturer | MESSERSCHMITT-BOLKOW-BLOHM |
| Model | BO 209 MONSUN |
| Year Built | 1971 |
| Manufacturer's Serial Number | 142 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Average Cruising Speed | 101 miles per hour |
| Type of Registrant | Individual |
| Owner Name | WHITAKER ALVIN E |
| Street | 6422 YORK HEIGHTS RD |
| City | WATERLOO |
| State | WI |
| Zip Code | 53594 |
| Region | Great Lakes |
| County | Jefferson County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1971-09-17 |
| Certificate Issue Date | 1987-02-27 |
| Last Action Date | 2022-02-24 |
| Expiration Date | 2029-07-31 |
| Status | Valid Registration |
| Mode S Code | 50332410 |
| Mode S Code Hex | A1B508 |