# N120: 1980 Schleicher ASW-20

- Status: Valid registration
- Airframe: [Schleicher ASW-20](https://openairdocs.org/model/schleicher-asw-20) (registry code 3801506, 1 seats)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Serial number: 20344
- Year built: 1980
- Type: Glider
- Engine type: None
- Airworthiness: Experimental, racing, exhibition
- Airworthiness date: August 20, 1980
- Certificate issued: April 29, 2015
- Expires: April 30, 2028
- Mode S code: A053B1
- Registered owners: [Dittmer Larry J](https://openairdocs.org/faa-owner/DITTMER%20LARRY%20J), [Dittmer Linda S](https://openairdocs.org/faa-owner/DITTMER%20LINDA%20S)
- Location: [Basco, IL](https://openairdocs.org/faa-place/IL/Basco)
- Owner type: Co-owned
- Owner's area on the map: 40.3177° N, 91.2283° W: Placed by OpenAirDocs at the center of ZIP code 62313, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=120
- Page: https://openairdocs.org/aircraft/N120

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 (Schleicher ASW-20)

None in force.

### Matched by engine (NONE)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N120.

## NTSB investigations on N120 not matched to an aircraft (2)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB MKC79DA045](https://openairdocs.org/ntsb/MKC79DA045), Jul 26, 1979: Convair 580 (N120), Joplin, MO, no damage
- [NTSB CHI67A0046](https://openairdocs.org/ntsb/CHI67A0046), Sep 30, 1966: Lockheed L-188 (N120), Indianapolis, IN, no damage

## FAA accident and incident reports

None matched to N120.

## Reports on N120 not matched to an aircraft (1)

They name N120, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [Incident 19780818049209I](https://openairdocs.org/incident/19780818049209I), Aug 18, 1978: Doug DC10* (N120), Flushing, NY. Uncontrollable, uncooperative passenger made necessary a return to gate. Passenger was removed.

## 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.

## Earlier aircraft with N120

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N120 before.

- [Cancelled 1979-11-29](https://openairdocs.org/deregistered/N120-1979-11-29): Piper PA-30, S/N 30-145. Exported to Canada. Owner: [Provo Aviation](https://openairdocs.org/faa-owner/PROVO%20AVIATION), [Provo, UT](https://openairdocs.org/faa-place/UT/Provo)
- [Cancelled 1946-01-17](https://openairdocs.org/deregistered/N120-1946-01-17): Interstate S-1A, S/N 122. Owner: [Civil Aeronautics Administration](https://openairdocs.org/faa-owner/CIVIL%20AERONAUTICS%20ADMINISTRATION), [Washington, DC](https://openairdocs.org/faa-place/DC/Washington)

## Related

- Other Schleicher ASW-20 aircraft: https://openairdocs.org/model/schleicher-asw-20/aircraft.md
- The NONE engine: https://openairdocs.org/engine/none.md

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