# N7577: 1970 Schweizer SGS 1-26D

- Status: Valid registration
- Airframe: [Schweizer SGS 1-26D](https://openairdocs.org/model/schweizer-sgs-1-26d) (registry code 8050122, 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: 474
- Year built: 1970
- Type: Glider
- Engine type: None
- Airworthiness: Standard, glider
- Airworthiness date: August 1, 1970
- Certificate issued: October 28, 2014
- Expires: October 31, 2027
- Mode S code: AA3757
- Registered owner: [Naca 130 LLC](https://openairdocs.org/faa-owner/NACA%20130%20LLC)
- Location: [Cameron Park, CA](https://openairdocs.org/faa-place/CA/Cameron%20Park)
- Owner type: LLC
- Owner's area on the map: 38.5990° N, 120.9631° W: Placed by OpenAirDocs at the center of ZIP code 95682, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=7577
- Page: https://openairdocs.org/aircraft/N7577

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 1-26D)

- [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 OAK73DVD18](https://openairdocs.org/ntsb/OAK73DVD18), Oct 8, 1972: Schweizer SGS126 (N7577), Freemont, CA, substantial damage

## FAA accident and incident reports

None matched to N7577.

## Reports on N7577 not matched to an aircraft (2)

They name N7577, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [Accident 19800925056219A](https://openairdocs.org/incident/19800925056219A), Sep 25, 1980: Cessna 180 (N7577), Pitkin, LA, Substantial damage. Landed downwind on Private grass strip. Ran off end of runway into trees.
- [Incident 19790620016549I](https://openairdocs.org/incident/19790620016549I), Jun 20, 1979: Boeing 707/ (N7577), Syracuse, NY. Flight returned, unable to retract the nose gear. Changed sequence valve pn 6387 and lubed

## 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 1-26D)

- [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

## Related

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

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