# N5721S: 1967 Schweizer SGS 2-33, registration cancelled 2015-05-19

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 19, 2015
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Schweizer SGS 2-33](https://openairdocs.org/model/schweizer-sgs-2-33) (registry code 8051604)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Data sheets: [TCDS G2EA](https://openairdocs.org/tcds/G2EA) (OpenAirDocs)
- Serial number: 67
- Year built: 1967
- Type of aircraft: Glider
- Engine type: None
- Airworthiness: Standard, glider
- Airworthiness date: December 21, 1967
- Certificate issued: July 14, 1978
- Last registry action: May 19, 2009
- Mode S code: A75863
- Owner when cancelled: [Blue Thermal Inc](https://openairdocs.org/faa-owner/BLUE%20THERMAL%20INC)
- Location: [Milton Freewater, OR](https://openairdocs.org/faa-place/OR/Milton%20Freewater)
- Owner type: Corporation
- Owner's area on the map: 45.9221° N, 118.3161° W: Placed by OpenAirDocs at the center of ZIP code 97862, within about 10 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N5721S
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5721S
- Page: https://openairdocs.org/deregistered/N5721S-2015-05-19

From the FAA registry file of November 4, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Schweizer SGS 2-33: https://openairdocs.org/model/schweizer-sgs-2-33.md

## 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 SEA75FYG32](https://openairdocs.org/ntsb/SEA75FYG32), Apr 19, 1975: Schweizer SGS233 (N5721S), Colville, WA, substantial damage

## FAA accident and incident reports (1)

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 19750419011349A](https://openairdocs.org/incident/19750419011349A), Apr 19, 1975: Scwzer SGS233 (N5721S), Colville, WA, Substantial damage. Tow plane became airborne then settled. Student thought tow in trouble & released. Hit tree.

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