# N521CG: 2019 Alexander Schleicher ASK 21 B

- Status: Valid registration
- Airframe: [Alexander Schleicher ASK 21 B](https://openairdocs.org/model/alexander-schleicher-ask-21-b) (registry code 3801548, 2 seats)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Data sheets: [TCDS G47EU](https://openairdocs.org/tcds/G47EU) (Alexander Schleicher GmbH & Co. Segelflugzeugbau) (OpenAirDocs)
- Serial number: 21963
- Year built: 2019
- Type: Glider
- Engine type: None
- Airworthiness: Standard, utility, acrobatic
- Airworthiness date: August 15, 2019
- Certificate issued: July 31, 2019
- Expires: July 31, 2029
- Mode S code: A68CDE
- Registered owner: [Chicago Glider Club Inc](https://openairdocs.org/faa-owner/CHICAGO%20GLIDER%20CLUB%20INC)
- Location: [Minooka, IL](https://openairdocs.org/faa-place/IL/Minooka)
- Owner type: Corporation
- Owner's area on the map: 41.4872° N, 88.3222° W: Placed by OpenAirDocs at the center of ZIP code 60447, 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=521CG
- Page: https://openairdocs.org/aircraft/N521CG

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 (Alexander Schleicher ASK 21 B)

None in force.

### Matched by engine (NONE)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N521CG.

## FAA accident and incident reports

None matched to N521CG.

## 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 Alexander Schleicher ASK 21 B aircraft: https://openairdocs.org/model/alexander-schleicher-ask-21-b/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.