# N1171S: Schweizer SGS 1-34, registration cancelled 1987-08-11

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 11, 1987
- Status when cancelled: Administratively canceled
- Airframe: [Schweizer SGS 1-34](https://openairdocs.org/model/schweizer-sgs-1-34) (registry code 8050146)
- Data sheets: [TCDS G3EA](https://openairdocs.org/tcds/G3EA) (OpenAirDocs)
- Serial number: 71
- Type of aircraft: Glider
- Certificate issued: August 13, 1980
- Last registry action: August 11, 1987
- Mode S code: A048C0
- Owners when cancelled: [Poole William L Jr](https://openairdocs.org/faa-owner/POOLE%20WILLIAM%20L%20JR), [King City Aviation](https://openairdocs.org/faa-owner/KING%20CITY%20AVIATION), [Vinson Jan M](https://openairdocs.org/faa-owner/VINSON%20JAN%20M)
- Location: [San Diego, CA](https://openairdocs.org/faa-place/CA/San%20Diego)
- Owner type: Individual
- Owner's area on the map: 32.6800° N, 117.0489° W: Placed by OpenAirDocs at the center of ZIP code 92139, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N1171S
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=1171S
- Page: https://openairdocs.org/deregistered/N1171S-1987-08-11

From the FAA registry file of November 5, 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 1-34: https://openairdocs.org/model/schweizer-sgs-1-34.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 DEN75FTE69](https://openairdocs.org/ntsb/DEN75FTE69), May 18, 1975: Schweizer SGS134 (N1171S), Colorado Spgs, CO, 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 19750518009989A](https://openairdocs.org/incident/19750518009989A), May 18, 1975: Scwzer SGS134 (N1171S), Colorado Spgs, CO, Substantial damage. Flt spoilers extended too soon.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.