Schleicher ASK-21
43 on the U.S. register. Built from 1982 to 2006; half of them date from 1986 or earlier. California has the most (6). 84% are registered to companies, flight schools, clubs and other organisations; the rest to individuals, who are not named here at this time.
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About the ASK-21 from the FAA's model table
- Type
- Glider · Gliders
- Power
- None
- Common engines
- None None (36), Ama/Expr Unknown Eng (4)
- Seats
- 2
- Built of
- composite · A glass-fibre glider.
- Maker on the register
- Schleicher
- Registered
- earliest certificate March 5, 1984; newest September 30, 2026
Where they are owner's state
Who owns them registrant type
By owner type, as a table
| aircraft | share | |
|---|---|---|
| Corporation | 31 | 72% |
| LLC | 5 | 12% |
| Co-owned | 4 | 9% |
| Individual | 3 | 7% |
Versions as the FAA records them · click one to list only those aircraft
| Version | Registered | Built | Share |
|---|---|---|---|
| ASK-21 | 43 | 1982 to 2006 | 100.0% |
When they were built by decade · 9 with no year on file
Airworthiness certificate class
By airworthiness certificate, as a table
| aircraft | share | |
|---|---|---|
| Standard | 40 | 93% |
| None on file | 2 | 5% |
| Experimental | 1 | 2% |
Biggest operators companies, schools and clubs
Civil Air Patrol INC3Hollister Soaring Center LLC2Harris Hill Soaring CORP2Eagleville Soaring INC2Civil Air Patrol2Windy City Soaring Association INC1Valley Soaring Club INC1Utah Soaring Association1Texas Soaring Association INC1Southern California Soaring Academy INC1Soaring Society of Dayton INC1Soaring Society of Dayton1
Largest fleets, as a table
| aircraft | |
|---|---|
| Civil Air Patrol INC | 3 |
| Hollister Soaring Center LLC | 2 |
| Harris Hill Soaring CORP | 2 |
| Eagleville Soaring INC | 2 |
| Civil Air Patrol | 2 |
| Windy City Soaring Association INC | 1 |
| Valley Soaring Club INC | 1 |
| Utah Soaring Association | 1 |
| Texas Soaring Association INC | 1 |
| Southern California Soaring Academy INC | 1 |
| Soaring Society of Dayton INC | 1 |
| Soaring Society of Dayton | 1 |
Fleet pages: Civil Air Patrol INC · Hollister Soaring Center LLC · Harris Hill Soaring CORP · Civil Air Patrol · Valley Soaring Club INC · Texas Soaring Association INC · Southern California Soaring Academy INC · Soaring Society of Dayton INC
Accident history NTSB records · 14 cases since 1982, 1 fatal
2026-08-08WPR26LA299 · ASK-21 N361KS · accident near Tehachapi, CA · no injuries
2024-10-06ERA25LA009 · ASK-21 N341KS · accident near Front Royal, VA · minor injuries
2009-06-30WPR09CA479 · ASK-21 N63JJ · accident near Jean, NV · minor injuries
2008-07-07MIA08CA136 · ASK-21 N363KS · accident near Elmira, NY · no injuries
2008-05-10SEA08CA129 · ASK-21 N361KS · accident near Tehachapi, CA · no injuries
2007-06-09ANC07LA046 · ASK-21 N621CP · accident near Clear, AK · no injuries
2004-06-16NYC04LA141 · ASK-21 N21VT · accident near Warren, VT · minor injuries
2003-12-28ANC04FA016 · ASK-21 N274KS · accident near Peoria, AZ · 4 killed
The 8 most recent of 14 cases where the NTSB's make and model match this family's versions. Each aircraft's own page also shows its record. How this model compares with others, with the fleet taken into account: Accidents by model in Aviation Analytics.
Questions people ask answers refresh every morning
How many Schleicher ASK-21 aircraft are registered in the U.S.?
43 as of October 30, 2026, counting 1 version the FAA records separately.
Which state has the most Schleicher ASK-21s?
California, with 6.
Who owns the Schleicher ASK-21?
84% are registered to companies, flight schools, clubs and other organisations; the rest to individuals and co-owners, who are not named on this site at this time.
When were the Schleicher ASK-21s on the register built?
Between 1982 and 2006; half of them in 1986 or earlier.
How many Schleicher ASK-21 accidents has the NTSB recorded?
14 accidents and incidents since 1982, 1 of them fatal. A model flown more shows more; the accident analytics compare models per thousand registered.
What is the Schleicher ASK-21 made of?
The airframe is composite: carbon fibre or glass fibre set in resin, moulded in large pieces with few joints, which gives smooth shapes but needs different inspection and repair methods from metal. A glass-fibre glider. The FAA's type certificate data sheet is the authority for any one model.
Connections how the ASK-21 links to the rest of the register
Design
- Schleicher 506 aircraft on the register
- Schleicher ASK-21 43 registered
- Built of composite · A glass-fibre glider.
Where they are
- California 6 of these aircraft
- New York 5 of these aircraft
- Alabama 5 of these aircraft
- Virginia 3 of these aircraft
- Georgia 3 of these aircraft
Biggest operators
- Civil Air Patrol INC 3 of these aircraft
- Hollister Soaring Center LLC 2 of these aircraft
- Harris Hill Soaring CORP 2 of these aircraft
- Eagleville Soaring INC 2 of these aircraft
- Civil Air Patrol 2 of these aircraft
Record
- NTSB accidents and incidents involving the ASK-21 14 cases since 1982 · 1 fatal
- FAA filings this year on these aircraft 4 filings · 4 bill of sale
The whole map of how records connect · these connections as data: /graph/model/schleicher/ask-21.json.
Aircraft newest certificates first · 43
| Tail no. | Maker and model | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|
| N421SL | Schleicher ASK-21 |
Individual owner California |
Standard | 2026-09-30 | ValidFAA registration status code V: Valid registration. All codes |
| N361KS | Schleicher ASK-21 |
Individual owner California |
Standard | 2026-09-27 | ValidFAA registration status code V: Valid registration. All codes |
| N221SB | Schleicher ASK-21 |
Low Country Soaring Association Ridgeland, South Carolina |
Standard | 2026-02-21 | ValidFAA registration status code V: Valid registration. All codes |
| N363KS | Schleicher ASK-21 |
Beta Fleet LLC South Burlington, Vermont |
Standard | 2025-11-10 | ValidFAA registration status code V: Valid registration. All codes |
| N794KS | Schleicher ASK-21 |
Albatross Aviation Hawaii LLC Waialua, Hawaii |
Standard | 2025-07-15 | ValidFAA registration status code V: Valid registration. All codes |
| N315KS | Schleicher ASK-21 |
Silvercreek Glider Club New Douglas, Illinois |
Standard | 2025-06-11 | ValidFAA registration status code V: Valid registration. All codes |
| N121WT | Schleicher ASK-21 |
Co-owned owner California |
Standard | 2025-03-18 | ValidFAA registration status code V: Valid registration. All codes |
| N21QU | Schleicher ASK-21 |
Utah Soaring Association Mapleton, Utah |
Standard | 2024-09-11 | ValidFAA registration status code V: Valid registration. All codes |
| N341KS | Schleicher ASK-21 |
Skyline Soaring Club INC Front Royal, Virginia |
Standard | 2024-08-28 | ValidFAA registration status code V: Valid registration. All codes |
| N110BL | Schleicher ASK-21 |
Blue Ridge Soaring Society New Castle, Virginia |
Standard | 2024-06-03 | ValidFAA registration status code V: Valid registration. All codes |
| N594KS | Schleicher ASK-21 |
Individual owner Washington |
Standard | 2023-10-05 | ValidFAA registration status code V: Valid registration. All codes |
| N179KS | Schleicher ASK-21 |
Hollister Soaring Center LLC Hollister, California |
Standard | 2023-09-07 | ValidFAA registration status code V: Valid registration. All codes |
| N694KS | Schleicher ASK-21 |
Southern California Soaring Academy INC Valencia, California |
Standard | 2023-01-16 | ValidFAA registration status code V: Valid registration. All codes |
| N128KS | Schleicher ASK-21 |
Co-owned owner New Mexico |
Standard | 2021-02-25 | ValidFAA registration status code V: Valid registration. All codes |
| N521SL | Schleicher ASK-21 |
Nfm Enterprises LLC Wurtsboro, New York |
Standard | 2020-08-20 | ValidFAA registration status code V: Valid registration. All codes |
| N314KS | Schleicher ASK-21 |
Black Forest Soaring Society Monument, Colorado |
Standard | 2020-08-10 | ValidFAA registration status code V: Valid registration. All codes |
| N221JH | Schleicher ASK-21 |
Hood River Soaring INC Hood River, Oregon |
Standard | 2020-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N2237W | Schleicher ASK-21 |
Eagleville Soaring INC Eagleville, Tennessee |
Standard | 2016-11-16 | ValidFAA registration status code V: Valid registration. All codes |
| N804KL | Schleicher ASK-21 |
Hollister Soaring Center LLC Hollister, California |
Experimental | 2016-10-17 | ValidFAA registration status code V: Valid registration. All codes |
| N120DW | Schleicher ASK-21 |
Arizona Soaring INC Maricopa, Arizona |
Standard | 2015-06-26 | ValidFAA registration status code V: Valid registration. All codes |
| N83MN | Schleicher ASK-21 |
Minnesota Soaring Club Stanton, Minnesota |
Standard | 2013-06-06 | ValidFAA registration status code V: Valid registration. All codes |
| N121FL | Schleicher ASK-21 |
Eagleville Soaring INC Eagleville, Tennessee |
None on file | 2011-08-25 | ValidFAA registration status code V: Valid registration. All codes |
| N474KS | Schleicher ASK-21 |
Valley Soaring Club INC Middletown, New York |
Standard | 2010-11-09 | ValidFAA registration status code V: Valid registration. All codes |
| N21HN | Schleicher ASK-21 |
Co-owned owner New Jersey |
None on file | 2008-09-23 | ValidFAA registration status code V: Valid registration. All codes |
| N955TS | Schleicher ASK-21 |
Texas Soaring Association INC Midlothian, Texas |
Standard | 2006-11-14 | ValidFAA registration status code V: Valid registration. All codes |
| N30BR | Schleicher ASK-21 |
Blue Ridge Soaring Society INC New Castle, Virginia |
Standard | 2006-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N521CC | Schleicher ASK-21 |
Soaring Society of Dayton Waynesville, Ohio |
Standard | 2005-11-17 | ValidFAA registration status code V: Valid registration. All codes |
| N674KS | Schleicher ASK-21 |
Co-owned owner Minnesota |
Standard | 2005-08-04 | ValidFAA registration status code V: Valid registration. All codes |
| N129KS | Schleicher ASK-21 |
High Desert Soaring Club INC Bend, Oregon |
Standard | 2004-01-14 | ValidFAA registration status code V: Valid registration. All codes |
| N972AF | Schleicher ASK-21 |
Civil Air Patrol Maxwell Afb, Alabama |
Standard | 2003-12-08 | ValidFAA registration status code V: Valid registration. All codes |
| N975AF | Schleicher ASK-21 |
Civil Air Patrol Maxwell Afb, Alabama |
Standard | 2003-12-08 | ValidFAA registration status code V: Valid registration. All codes |
| N121WC | Schleicher ASK-21 |
Windy City Soaring Association INC Hinckley, Illinois |
Standard | 2003-01-22 | ValidFAA registration status code V: Valid registration. All codes |
| N621MG | Schleicher ASK-21 |
Mid-Georgia Soaring Association Monroe, Georgia |
Standard | 2002-05-08 | ValidFAA registration status code V: Valid registration. All codes |
| N221CC | Schleicher ASK-21 |
Soaring Society of Dayton INC Waynesville, Ohio |
Standard | 2001-09-27 | ValidFAA registration status code V: Valid registration. All codes |
| N621CP | Schleicher ASK-21 |
Civil Air Patrol INC Maxwell Afb, Alabama |
Standard | 2000-05-18 | ValidFAA registration status code V: Valid registration. All codes |
| N574KS | Schleicher ASK-21 |
Finger Lakes Soaring Club INC Dansville, New York |
Standard | 2000-03-09 | ValidFAA registration status code V: Valid registration. All codes |
| N521HH | Schleicher ASK-21 |
Harris Hill Soaring CORP Horseheads, New York |
Standard | 2000-03-03 | ValidFAA registration status code V: Valid registration. All codes |
| N521CP | Schleicher ASK-21 |
Civil Air Patrol INC Maxwell Afb, Alabama |
Standard | 1999-08-17 | ValidFAA registration status code V: Valid registration. All codes |
| N612MG | Schleicher ASK-21 |
Mid-Georgia Soaring Association INC Monroe, Georgia |
Standard | 1998-07-06 | ValidFAA registration status code V: Valid registration. All codes |
| N221CP | Schleicher ASK-21 |
Civil Air Patrol INC Maxwell Afb, Alabama |
Standard | 1998-06-04 | ValidFAA registration status code V: Valid registration. All codes |
| N374KS | Schleicher ASK-21 |
Ask Flyers INC Hogansville, Georgia |
Standard | 1995-05-12 | ValidFAA registration status code V: Valid registration. All codes |
| N91HH | Schleicher ASK-21 |
Harris Hill Soaring CORP Horseheads, New York |
Standard | 1991-02-07 | ValidFAA registration status code V: Valid registration. All codes |
| N21AF | Schleicher ASK-21 |
Adrian Soaring Club Ypsilanti, Michigan |
Standard | 1984-03-05 | ValidFAA registration status code V: Valid registration. All codes |