# N231SL: 1964 Schweizer SGS 1-23H-15

- Status: Valid registration
- Airframe: [Schweizer SGS 1-23H-15](https://openairdocs.org/model/schweizer-sgs-1-23h-15) (registry code 8050112, 1 seats)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Data sheets: [TCDS 1G1](https://openairdocs.org/tcds/1G1) (K & L Soaring LLC) (OpenAirDocs)
- Serial number: 68
- Year built: 1964
- Type: Glider
- Engine type: None
- Airworthiness: Standard, other
- Airworthiness date: August 29, 2007
- Certificate issued: December 6, 2021
- Expires: December 31, 2028
- Mode S code: A20DD2
- Registered owner: [Baker Kenneth J](https://openairdocs.org/faa-owner/BAKER%20KENNETH%20J)
- Location: [Norridgewock, ME](https://openairdocs.org/faa-place/ME/Norridgewock)
- Owner type: Individual
- Owner's area on the map: 44.7143° N, 69.8635° W: Placed by OpenAirDocs at the center of ZIP code 04957, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=231SL
- Page: https://openairdocs.org/aircraft/N231SL

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): 3 in force

### Matched by airframe (Schweizer SGS 1-23H-15)

- [AD 87-17-01](https://openairdocs.org/ad/87-17-01): Tow Release Installation · K & L Soaring SGS 1-23, SGS 1-23D, SGS 1-23F and 25 more. Effective Aug 19, 1988
- [AD 87-02-01](https://openairdocs.org/ad/87-02-01): Tow-Release Installation Inspection · K & L Soaring SGM 2-37, SGS 1-23, SGS 1-23D and 32 more. Effective Jan 21, 1987
- [AD 71-17-09](https://openairdocs.org/ad/71-17-09): Loose Rudder Fittings · K & L Soaring SGS 1-23H and SGS 1-23H-15. Effective Aug 26, 1971

### Matched by engine (NONE)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N231SL.

## FAA accident and incident reports

None matched to N231SL.

## 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 Schweizer SGS 1-23H-15 aircraft: https://openairdocs.org/model/schweizer-sgs-1-23h-15/aircraft.md
- The NONE engine: https://openairdocs.org/engine/none.md

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