# N899SA: 2017 Alexander Schleicher ASK 21

- Status: Valid registration
- Airframe: [Alexander Schleicher ASK 21](https://openairdocs.org/model/alexander-schleicher-ask-21) (registry code 3801539, 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: 21946
- Year built: 2017
- Type: Glider
- Engine type: None
- Airworthiness: Standard, other
- Airworthiness date: November 25, 2017
- Certificate issued: November 9, 2017
- Expires: November 30, 2027
- Mode S code: AC6854
- Registered owner: [Mid Atlantic Soaring Association (M-Asa)](https://openairdocs.org/faa-owner/MID%20ATLANTIC%20SOARING%20ASSOCIATION%20(M-ASA))
- Location: [Frederick, MD](https://openairdocs.org/faa-place/MD/Frederick)
- Owner type: Corporation
- Owner's area on the map: 39.3549° N, 77.3759° W: Placed by OpenAirDocs at the center of ZIP code 21704, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=899SA
- Page: https://openairdocs.org/aircraft/N899SA

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): 13 in force

### Matched by airframe (Alexander Schleicher ASK 21)

- [AD 2017-02-11](https://openairdocs.org/ad/2017-02-11): Flight Controls · Alexander Schleicher ASK 21. Effective Mar 17, 2017
- [AD 2014-06-07](https://openairdocs.org/ad/2014-06-07): Placards and Markings · Alexander Schleicher ASK 21. Effective May 8, 2014
- [AD 95-11-15 R1](https://openairdocs.org/ad/95-11-15-R1): Parallel Rocker · Alexander Schleicher ASK 21. Effective Jul 25, 1999
- [AD 98-12-03](https://openairdocs.org/ad/98-12-03): Rudder Panel, Airbrake Bellcrank, Rear Canopy Hinge · Alexander Schleicher ASK 21, ASW-19 and ASW-19B. Effective Jul 14, 1998
- [AD 98-10-07](https://openairdocs.org/ad/98-10-07): SFM - Weight and Balance · Alexander Schleicher ASK 21. Effective Jun 26, 1998
- [AD 98-09-13](https://openairdocs.org/ad/98-09-13): S-Shaped Rudder Pedal Tube Inspection · Alexander Schleicher ASK 21. Effective Jun 14, 1998
- [AD 98-08-29](https://openairdocs.org/ad/98-08-29): SFM - Stall and Spin Recovery Information · Alexander Schleicher ASK 21. Effective May 18, 1998
- [AD 98-06-38](https://openairdocs.org/ad/98-06-38): Elevator Pushrod · Alexander Schleicher ASK 21. Effective Apr 28, 1998
- [AD 98-06-37](https://openairdocs.org/ad/98-06-37): Tow Release Cable Assembly · Alexander Schleicher ASK 21. Effective Apr 28, 1998
- [AD 97-08-06 R1](https://openairdocs.org/ad/97-08-06-R1): Quick Connectors · Alexander Schleicher AS-K 13, AS 12, ASK 21 and 39 more. Effective Aug 1, 1997
- [AD 87-10-07](https://openairdocs.org/ad/87-10-07): Rudder Pedal · Alexander Schleicher ASK 21. Effective May 13, 1987
- [AD 85-06-07](https://openairdocs.org/ad/85-06-07): Main Wheel Box · Alexander Schleicher ASK 21. Effective Jul 25, 1985
- [AD 84-23-03](https://openairdocs.org/ad/84-23-03): Placard And Afm Changes · Alexander Schleicher ASK 21. Effective Nov 14, 1984

### Matched by engine (NONE)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N899SA.

## FAA accident and incident reports

None matched to N899SA.

## 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.

## Earlier aircraft with N899SA

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N899SA before.

- [Cancelled 2011-06-03](https://openairdocs.org/deregistered/N899SA-2011-06-03): Cubcrafters CC11-160, S/N CC11-00167. Exported to Australia. Owner: [Cub Crafters Inc](https://openairdocs.org/faa-owner/CUB%20CRAFTERS%20INC), [Yakima, WA](https://openairdocs.org/faa-place/WA/Yakima)

## Related

- Other Alexander Schleicher ASK 21 aircraft: https://openairdocs.org/model/alexander-schleicher-ask-21/aircraft.md
- The NONE engine: https://openairdocs.org/engine/none.md

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