# N33915: 1975 Schweizer SGS 1-26E

- Status: Valid registration
- Airframe: [Schweizer SGS 1-26E](https://openairdocs.org/model/schweizer-sgs-1-26e) (registry code 8050124, 1 seats)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Data sheets: [TCDS 1G10](https://openairdocs.org/tcds/1G10) (K & L Soaring LLC) (OpenAirDocs)
- Serial number: 625
- Year built: 1975
- Type: Glider
- Engine type: None
- Airworthiness: Standard, glider
- Airworthiness date: May 6, 1975
- Certificate issued: January 6, 2022
- Expires: January 31, 2029
- Mode S code: A3B9D7
- Registered owner: [Fenske Joseph G](https://openairdocs.org/faa-owner/FENSKE%20JOSEPH%20G)
- Location: [Boonton, NJ](https://openairdocs.org/faa-place/NJ/Boonton)
- Owner type: Individual
- Owner's area on the map: 40.9304° N, 74.4111° W: Placed by OpenAirDocs at the center of ZIP code 07005, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=33915
- Page: https://openairdocs.org/aircraft/N33915

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 1-26E)

- [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 FTW94LA237](https://openairdocs.org/ntsb/FTW94LA237), Jul 16, 1994: Schweizer SGS 1-26E (N33915), Littlefield, TX, substantial damage. Probable cause: AN INADVERTENT STALL. FACTORS WERE LOW ALTITUDE AND AIRSPEED AT THE BEGINNING OF THE DOWNWIND TURN.

## 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 19940716018529A](https://openairdocs.org/incident/19940716018529A), Jul 16, 1994: Scwzer SGS126E (N33915), Littlefield, TX, Substantial damage. During glider competition. Crossed fence finish marker low. Began left turn for landing. Nosed into ground.
- [Incident 19890907052219I](https://openairdocs.org/incident/19890907052219I), Sep 7, 1989: Scwzer SGS126E (N33915), Pine City, NY, No damage. Right wing tip and undercarriage damaged while landing in a field.

## 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) (4)

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 1-26E)

- [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 SG1265GL](https://openairdocs.org/stc/SG1265GL): Surrendered and incorporated into STC SG01164CH. Cooper Aviation Supply Company, Inc
- [STC SG4WE](https://openairdocs.org/stc/SG4WE): Ceconite 101 covering of complete aircraft. Cooper Engineering Corporation. Lists SGS 1-26 Series

## Earlier aircraft with N33915

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N33915 before.

- [Cancelled 1950-05-10](https://openairdocs.org/deregistered/N33915-1950-05-10): Taylorcraft BC12-65, S/N 2766. Owner: [Airepair](https://openairdocs.org/faa-owner/AIREPAIR), [Great Falls, MT](https://openairdocs.org/faa-place/MT/Great%20Falls)

## Related

- Other Schweizer SGS 1-26E aircraft: https://openairdocs.org/model/schweizer-sgs-1-26e/aircraft.md
- The NONE engine: https://openairdocs.org/engine/none.md

---
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.