| Tail Number / N-Number | N39772 |
| Manufacturer | BERTELMANN ALTON E |
| Model | SONERAI II |
| Manufacturer's Serial Number | 367 |
| 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 | VOLKSWAGEN |
| Engine Model | CONVERSION |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 36 hp (27 kW) |
| Type of Registrant | Individual |
| Owner Name | BERTELMANN ALTON E |
| Street | 6918 POLEY CREEK DR W |
| City | LAKELAND |
| State | FL |
| Zip Code | 33811-2422 |
| Region | Southern |
| County | Polk County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1988-05-26 |
| Certificate Issue Date | 1983-06-23 |
| Last Action Date | 2020-05-17 |
| Expiration Date | 2027-07-31 |
| Status | Valid Registration |
| Mode S Code | 51120062 |
| Mode S Code Hex | A4A032 |