# N28DD: 1965 Schweizer SGS 2-32

- Status: Valid registration
- Airframe: [Schweizer SGS 2-32](https://openairdocs.org/model/schweizer-sgs-2-32) (registry code 8050206, 3 seats)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Data sheets: [TCDS G1EA](https://openairdocs.org/tcds/G1EA) (K & L Soaring LLC) (OpenAirDocs)
- Serial number: 20
- Year built: 1965
- Type: Glider
- Engine type: None
- Airworthiness: Standard
- Airworthiness date: July 24, 1965
- Certificate issued: December 3, 2022
- Expires: December 31, 2029
- Mode S code: A2CBF1
- Registered owner: [Sundale Soaring LLC](https://openairdocs.org/faa-owner/SUNDALE%20SOARING%20LLC)
- Location: [Erwinna, PA](https://openairdocs.org/faa-place/PA/Erwinna)
- Owner type: LLC
- Owner's area on the map: 40.4930° N, 75.0867° W: Placed by OpenAirDocs at the center of ZIP code 18920, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=28DD
- Page: https://openairdocs.org/aircraft/N28DD

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 SGS 2-32)

- [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 (1)

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 OAK72DVG44](https://openairdocs.org/ntsb/OAK72DVG44), Mar 17, 1972: Schweizer SGS232 (N28DD), Fairfield, CA, substantial damage

## FAA accident and incident reports

None matched to N28DD.

## 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) (3)

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 SGS 2-32)

- [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 SG01164CH](https://openairdocs.org/stc/SG01164CH): Install Cooper superflite 102 fabric. Aviation Products Systems Inc
- [STC SG1244GL](https://openairdocs.org/stc/SG1244GL): Surrendered and incorporated into STC SG01164CH. Cooper Aviation Supply Company, Inc

## Related

- Other Schweizer SGS 2-32 aircraft: https://openairdocs.org/model/schweizer-sgs-2-32/aircraft.md
- The NONE engine: https://openairdocs.org/engine/none.md

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