# N7983A: 1958 Niemi SISU 1

- Status: Valid registration
- Airframe: [Niemi SISU 1](https://openairdocs.org/model/niemi-sisu-1) (registry code 0780170, 1 seats)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Serial number: 100
- Year built: 1958
- Type: Glider
- Engine type: None
- Airworthiness: Experimental, amateur built
- Airworthiness date: September 9, 1979
- Certificate issued: April 11, 2012
- Expires: April 30, 2028
- Mode S code: AAD87F
- Registered owner: [Kirschner Charles L](https://openairdocs.org/faa-owner/KIRSCHNER%20CHARLES%20L)
- Location: [San Bernardino, CA](https://openairdocs.org/faa-place/CA/San%20Bernardino)
- Owner type: Individual
- Owner's area on the map: 34.1786° N, 117.2389° W: Placed by OpenAirDocs at the center of ZIP code 92404, 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=7983A
- Page: https://openairdocs.org/aircraft/N7983A

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 (Niemi SISU 1)

None in force.

### Matched by engine (NONE)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N7983A.

## FAA accident and incident reports

None matched to N7983A.

## 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 Niemi SISU 1 aircraft: https://openairdocs.org/model/niemi-sisu-1/aircraft.md
- The NONE engine: https://openairdocs.org/engine/none.md

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