# N39772: Bertelmann Alton E SONERAI II

- Status: Valid registration
- Airframe: [Bertelmann Alton E SONERAI II](https://openairdocs.org/model/bertelmann-alton-e-sonerai-ii) (registry code 056591M, 2 seats)
- Engine: [Volkswagen CONVERSION](https://openairdocs.org/engine/volkswagen-conversion) (registry code 63501)
- Serial number: 367
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built, market survey
- Airworthiness date: May 26, 1988
- Certificate issued: June 23, 1983
- Expires: July 31, 2027
- Mode S code: A4A032
- Registered owner: [Bertelmann Alton E](https://openairdocs.org/faa-owner/BERTELMANN%20ALTON%20E)
- Location: [Lakeland, FL](https://openairdocs.org/faa-place/FL/Lakeland)
- Owner type: Individual
- Owner's area on the map: 27.9789° N, 82.0159° W: Placed by OpenAirDocs at the center of ZIP code 33811, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=39772
- Page: https://openairdocs.org/aircraft/N39772

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Bertelmann Alton E SONERAI II)

None in force.

### Matched by engine (Volkswagen CONVERSION)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N39772.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 19890416008289I](https://openairdocs.org/incident/19890416008289I), Apr 16, 1989: Amtrmo SONERAI2 (N39772), Reserve, LA, Minor damage. Engine failed after doing turns about a point. Ditched in lake. Condensor wire on magneto broke.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other Bertelmann Alton E SONERAI II aircraft: https://openairdocs.org/model/bertelmann-alton-e-sonerai-ii/aircraft.md
- The Volkswagen CONVERSION engine: https://openairdocs.org/engine/volkswagen-conversion.md

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