# N1178S: 1971 Schweizer SGS 2-33B

- Status: Valid registration
- Airframe: [Schweizer SGS 2-33B](https://openairdocs.org/model/schweizer-sgs-2-33b) (registry code 8051607, 2 seats)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Serial number: 228
- Year built: 1971
- Type: Glider
- Engine type: None
- Airworthiness: Standard, utility
- Airworthiness date: October 24, 2024
- Certificate issued: December 12, 2000
- Expires: July 31, 2029
- Mode S code: A049B5
- Registered owner: [Lowry Wilson R](https://openairdocs.org/faa-owner/LOWRY%20WILSON%20R)
- Location: [Leonardtown, MD](https://openairdocs.org/faa-place/MD/Leonardtown)
- Owner type: Individual
- Owner's area on the map: 38.2599° N, 76.6324° W: Placed by OpenAirDocs at the center of ZIP code 20650, 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=1178S
- Page: https://openairdocs.org/aircraft/N1178S

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 (Schweizer SGS 2-33B)

None in force.

### 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 BFO94LA003](https://openairdocs.org/ntsb/BFO94LA003), Nov 7, 1993: Schweizer SGS 2-33A (N1178S), Morrisville, VT, substantial damage. Probable cause: THE PILOT'S LACK OF EXPERIENCE IN SOARING WHICH RESULTED IN INADEQUATE ALTITUDE TO CLEAR THE RIDGE AND SUBSEQUENT COLLISION WITH THE TERRAIN. A RELATED FACTOR WAS THE HIGH TERRAIN.

## FAA accident and incident reports (2)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19931107042239A](https://openairdocs.org/incident/19931107042239A), Nov 7, 1993: Scwzer SGS233A (N1178S), Morrisville, VT, Substantial damage. Struck trees on ridge attempting mountain soaring. Blamed uncontrollable downdraft.
- [Incident 19920517020939I](https://openairdocs.org/incident/19920517020939I), May 17, 1992: Scwzer SGS233A (N1178S), Salem, NH, Minor damage. Pilot experienced heavy sink rate on approach. Hit trees short of landing field. Had not flown for 15 years.

## 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 2-33B aircraft: https://openairdocs.org/model/schweizer-sgs-2-33b/aircraft.md
- The NONE engine: https://openairdocs.org/engine/none.md

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