# N91817: 1946 Schweizer SGU-1-19

- Status: Valid registration
- Airframe: [Schweizer SGU-1-19](https://openairdocs.org/model/schweizer-sgu-1-19) (registry code 8050502, 1 seats)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Data sheets: [TCDS G-17](https://openairdocs.org/tcds/G-17) (K & L Soaring LLC) (OpenAirDocs)
- Serial number: 39
- Year built: 1946
- Type: Glider
- Engine type: None
- Airworthiness: Standard
- Airworthiness date: October 5, 1964
- Certificate issued: December 13, 2022
- Expires: December 31, 2029
- Mode S code: ACB6FE
- Registered owner: [Mcknight Thomas N](https://openairdocs.org/faa-owner/MCKNIGHT%20THOMAS%20N)
- Location: [Fredericksburg, TX](https://openairdocs.org/faa-place/TX/Fredericksburg)
- Owner type: Individual
- Owner's area on the map: 30.2918° N, 98.8709° W: Placed by OpenAirDocs at the center of ZIP code 78624, within about 15 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=91817
- Page: https://openairdocs.org/aircraft/N91817

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): 2 in force

### Matched by airframe (Schweizer SGU-1-19)

- [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

### Matched by engine (NONE)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N91817.

## FAA accident and incident reports

None matched to N91817.

## 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) (5)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Schweizer SGU-1-19)

- [STC SA01734SE](https://openairdocs.org/stc/SA01734SE): Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts. Andrew D. Humphrey
- [STC SA1351WE](https://openairdocs.org/stc/SA1351WE): Replace existing fabric on wings, fuselage, empennage, and/or control surfaces, with Ceconite101 material. (262A Series -12). Ceconite Inc
- [STC SG10WE](https://openairdocs.org/stc/SG10WE): Replace existing fabric on wings, fuselage, empennage, and/or control surfaces with Ceconite103 material. Ceconite Inc
- [STC SG4-1240](https://openairdocs.org/stc/SG4-1240): Installation of Eonnex cover on aircraft surfaces. Ceconite, Inc
- [STC SG7WE](https://openairdocs.org/stc/SG7WE): Ceconite 101 covering of complete airframe. Cooper Engineering Corporation

## Related

- Other Schweizer SGU-1-19 aircraft: https://openairdocs.org/model/schweizer-sgu-1-19/aircraft.md
- The NONE engine: https://openairdocs.org/engine/none.md

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