# Schleicher ASK-21

- Type: Aircraft model (FAA registry)
- Registry code: 38015GY
- Manufacturer (registry): SCHLEICHER
- Model: ASK-21
- Aircraft type: Glider
- Category: Glider
- Engines: None
- Seats: 2
- Weight class: Up to 12,499 lb
- Certification: Type certificated
- Data sheet: [TCDS G47EU](https://openairdocs.org/tcds/G47EU) (OpenAirDocs)
- Holder: Alexander Schleicher GmbH & Co. Segelflugzeugbau
- Registered aircraft: 43
- Page: https://openairdocs.org/model/schleicher-ask-21

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

- [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

## Registered aircraft (43)

- [N110BL](https://openairdocs.org/aircraft/N110BL): [Blue Ridge Soaring Society](https://openairdocs.org/faa-owner/BLUE%20RIDGE%20SOARING%20SOCIETY), [New Castle, VA](https://openairdocs.org/faa-place/VA/New%20Castle), built 1985, S/N 21268
- [N120DW](https://openairdocs.org/aircraft/N120DW): [Arizona Soaring Inc](https://openairdocs.org/faa-owner/ARIZONA%20SOARING%20INC), [Maricopa, AZ](https://openairdocs.org/faa-place/AZ/Maricopa), built 2002, S/N 21747
- [N121FL](https://openairdocs.org/aircraft/N121FL): [Eagleville Soaring Inc](https://openairdocs.org/faa-owner/EAGLEVILLE%20SOARING%20INC), [Eagleville, TN](https://openairdocs.org/faa-place/TN/Eagleville), S/N 21267
- [N121WC](https://openairdocs.org/aircraft/N121WC): [Windy City Soaring Association Inc](https://openairdocs.org/faa-owner/WINDY%20CITY%20SOARING%20ASSOCIATION%20INC), [Hinckley, IL](https://openairdocs.org/faa-place/IL/Hinckley), built 1990, S/N 21464
- [N121WT](https://openairdocs.org/aircraft/N121WT): [Kline Clare F Jr](https://openairdocs.org/faa-owner/KLINE%20CLARE%20F%20JR), [Ridgecrest, CA](https://openairdocs.org/faa-place/CA/Ridgecrest), built 1991, S/N 21524
- [N128KS](https://openairdocs.org/aircraft/N128KS): [Mah Richard](https://openairdocs.org/faa-owner/MAH%20RICHARD), [Los Alamos, NM](https://openairdocs.org/faa-place/NM/Los%20Alamos), S/N 21273
- [N129KS](https://openairdocs.org/aircraft/N129KS): [High Desert Soaring Club Inc](https://openairdocs.org/faa-owner/HIGH%20DESERT%20SOARING%20CLUB%20INC), [Bend, OR](https://openairdocs.org/faa-place/OR/Bend), S/N 21275
- [N179KS](https://openairdocs.org/aircraft/N179KS): [Hollister Soaring Center LLC](https://openairdocs.org/faa-owner/HOLLISTER%20SOARING%20CENTER%20LLC), [Hollister, CA](https://openairdocs.org/faa-place/CA/Hollister), S/N 21236
- [N21AF](https://openairdocs.org/aircraft/N21AF): [Adrian Soaring Club](https://openairdocs.org/faa-owner/ADRIAN%20SOARING%20CLUB), [Ypsilanti, MI](https://openairdocs.org/faa-place/MI/Ypsilanti), built 1983, S/N 21179
- [N21HN](https://openairdocs.org/aircraft/N21HN): [Calvert Scott R](https://openairdocs.org/faa-owner/CALVERT%20SCOTT%20R), [Pequannock, NJ](https://openairdocs.org/faa-place/NJ/Pequannock), S/N 21266
- [N21QU](https://openairdocs.org/aircraft/N21QU): [Utah Soaring Association](https://openairdocs.org/faa-owner/UTAH%20SOARING%20ASSOCIATION), [Mapleton, UT](https://openairdocs.org/faa-place/UT/Mapleton), S/N 21272
- [N221CC](https://openairdocs.org/aircraft/N221CC): [Soaring Society Of Dayton Inc](https://openairdocs.org/faa-owner/SOARING%20SOCIETY%20OF%20DAYTON%20INC), [Waynesville, OH](https://openairdocs.org/faa-place/OH/Waynesville), built 2001, S/N 21733
- [N221CP](https://openairdocs.org/aircraft/N221CP): [Civil Air Patrol Inc](https://openairdocs.org/faa-owner/CIVIL%20AIR%20PATROL%20INC), [Maxwell Afb, AL](https://openairdocs.org/faa-place/AL/Maxwell%20Afb), built 1998, S/N 21669
- [N221JH](https://openairdocs.org/aircraft/N221JH): [Hood River Soaring Inc](https://openairdocs.org/faa-owner/HOOD%20RIVER%20SOARING%20INC), [Hood River, OR](https://openairdocs.org/faa-place/OR/Hood%20River), S/N 21794
- [N221SB](https://openairdocs.org/aircraft/N221SB): [Low Country Soaring Association](https://openairdocs.org/faa-owner/LOW%20COUNTRY%20SOARING%20ASSOCIATION), [Ridgeland, SC](https://openairdocs.org/faa-place/SC/Ridgeland), built 1999, S/N 21699
- [N2237W](https://openairdocs.org/aircraft/N2237W): [Eagleville Soaring Inc](https://openairdocs.org/faa-owner/EAGLEVILLE%20SOARING%20INC), [Eagleville, TN](https://openairdocs.org/faa-place/TN/Eagleville), built 1982, S/N 21131
- [N30BR](https://openairdocs.org/aircraft/N30BR): [Blue Ridge Soaring Society Inc](https://openairdocs.org/faa-owner/BLUE%20RIDGE%20SOARING%20SOCIETY%20INC), [New Castle, VA](https://openairdocs.org/faa-place/VA/New%20Castle), built 2005, S/N 21804
- [N314KS](https://openairdocs.org/aircraft/N314KS): [Black Forest Soaring Society](https://openairdocs.org/faa-owner/BLACK%20FOREST%20SOARING%20SOCIETY), [Monument, CO](https://openairdocs.org/faa-place/CO/Monument), S/N 21279
- [N315KS](https://openairdocs.org/aircraft/N315KS): [Silvercreek Glider Club](https://openairdocs.org/faa-owner/SILVERCREEK%20GLIDER%20CLUB), [New Douglas, IL](https://openairdocs.org/faa-place/IL/New%20Douglas), built 1986, S/N 21281
- [N341KS](https://openairdocs.org/aircraft/N341KS): [Skyline Soaring Club Inc](https://openairdocs.org/faa-owner/SKYLINE%20SOARING%20CLUB%20INC), [Front Royal, VA](https://openairdocs.org/faa-place/VA/Front%20Royal), built 2002, S/N 21752
- [N361KS](https://openairdocs.org/aircraft/N361KS): [Barrett Jane T](https://openairdocs.org/faa-owner/BARRETT%20JANE%20T), [Tehachapi, CA](https://openairdocs.org/faa-place/CA/Tehachapi), built 1984, S/N 21224
- [N363KS](https://openairdocs.org/aircraft/N363KS): [Beta Fleet LLC](https://openairdocs.org/faa-owner/BETA%20FLEET%20LLC), [South Burlington, VT](https://openairdocs.org/faa-place/VT/South%20Burlington), built 1984, S/N 21228
- [N374KS](https://openairdocs.org/aircraft/N374KS): [Ask Flyers Inc](https://openairdocs.org/faa-owner/ASK%20FLYERS%20INC), [Hogansville, GA](https://openairdocs.org/faa-place/GA/Hogansville), built 1983, S/N 21196
- [N421SL](https://openairdocs.org/aircraft/N421SL): [Barrett Jane T](https://openairdocs.org/faa-owner/BARRETT%20JANE%20T), [Tehachapi, CA](https://openairdocs.org/faa-place/CA/Tehachapi), built 2006, S/N 21808
- [N474KS](https://openairdocs.org/aircraft/N474KS): [Valley Soaring Club Inc](https://openairdocs.org/faa-owner/VALLEY%20SOARING%20CLUB%20INC), [Middletown, NY](https://openairdocs.org/faa-place/NY/Middletown), built 1983, S/N 21197
- [N521CC](https://openairdocs.org/aircraft/N521CC): [Soaring Society Of Dayton](https://openairdocs.org/faa-owner/SOARING%20SOCIETY%20OF%20DAYTON), [Waynesville, OH](https://openairdocs.org/faa-place/OH/Waynesville), built 2005, S/N 21802
- [N521CP](https://openairdocs.org/aircraft/N521CP): [Civil Air Patrol Inc](https://openairdocs.org/faa-owner/CIVIL%20AIR%20PATROL%20INC), [Maxwell Afb, AL](https://openairdocs.org/faa-place/AL/Maxwell%20Afb), built 1999, S/N 21694
- [N521HH](https://openairdocs.org/aircraft/N521HH): [Harris Hill Soaring Corp](https://openairdocs.org/faa-owner/HARRIS%20HILL%20SOARING%20CORP), [Horseheads, NY](https://openairdocs.org/faa-place/NY/Horseheads), built 1999, S/N 21704
- [N521SL](https://openairdocs.org/aircraft/N521SL): [Nfm Enterprises LLC](https://openairdocs.org/faa-owner/NFM%20ENTERPRISES%20LLC), [Wurtsboro, NY](https://openairdocs.org/faa-place/NY/Wurtsboro), built 2006, S/N 21809
- [N574KS](https://openairdocs.org/aircraft/N574KS): [Finger Lakes Soaring Club Inc](https://openairdocs.org/faa-owner/FINGER%20LAKES%20SOARING%20CLUB%20INC), [Dansville, NY](https://openairdocs.org/faa-place/NY/Dansville), built 1984, S/N 21210
- [N594KS](https://openairdocs.org/aircraft/N594KS): [Henderson John M](https://openairdocs.org/faa-owner/HENDERSON%20JOHN%20M), [Moses Lake, WA](https://openairdocs.org/faa-place/WA/Moses%20Lake), S/N 21218
- [N612MG](https://openairdocs.org/aircraft/N612MG): [Mid-Georgia Soaring Association Inc](https://openairdocs.org/faa-owner/MID-GEORGIA%20SOARING%20ASSOCIATION%20INC), [Monroe, GA](https://openairdocs.org/faa-place/GA/Monroe), built 1992, S/N 21544
- [N621CP](https://openairdocs.org/aircraft/N621CP): [Civil Air Patrol Inc](https://openairdocs.org/faa-owner/CIVIL%20AIR%20PATROL%20INC), [Maxwell Afb, AL](https://openairdocs.org/faa-place/AL/Maxwell%20Afb), built 2000, S/N 21708
- [N621MG](https://openairdocs.org/aircraft/N621MG): [Mid-Georgia Soaring Association](https://openairdocs.org/faa-owner/MID-GEORGIA%20SOARING%20ASSOCIATION), [Monroe, GA](https://openairdocs.org/faa-place/GA/Monroe), built 1985, S/N 21254
- [N674KS](https://openairdocs.org/aircraft/N674KS): [Wheeler Steven E](https://openairdocs.org/faa-owner/WHEELER%20STEVEN%20E), [Northfield, MN](https://openairdocs.org/faa-place/MN/Northfield), built 1984, S/N 21211
- [N694KS](https://openairdocs.org/aircraft/N694KS): [Southern California Soaring Academy Inc](https://openairdocs.org/faa-owner/SOUTHERN%20CALIFORNIA%20SOARING%20ACADEMY%20INC), [Valencia, CA](https://openairdocs.org/faa-place/CA/Valencia), built 1984, S/N 21219
- [N794KS](https://openairdocs.org/aircraft/N794KS): [Albatross Aviation Hawaii LLC](https://openairdocs.org/faa-owner/ALBATROSS%20AVIATION%20HAWAII%20LLC), [Waialua, HI](https://openairdocs.org/faa-place/HI/Waialua), built 1984, S/N 21220
- [N804KL](https://openairdocs.org/aircraft/N804KL): [Hollister Soaring Center LLC](https://openairdocs.org/faa-owner/HOLLISTER%20SOARING%20CENTER%20LLC), [Hollister, CA](https://openairdocs.org/faa-place/CA/Hollister), built 1984, S/N 21235
- [N83MN](https://openairdocs.org/aircraft/N83MN): [Minnesota Soaring Club](https://openairdocs.org/faa-owner/MINNESOTA%20SOARING%20CLUB), [Stanton, MN](https://openairdocs.org/faa-place/MN/Stanton), built 1983, S/N 21174
- [N91HH](https://openairdocs.org/aircraft/N91HH): [Harris Hill Soaring Corp](https://openairdocs.org/faa-owner/HARRIS%20HILL%20SOARING%20CORP), [Horseheads, NY](https://openairdocs.org/faa-place/NY/Horseheads), built 1990, S/N 21485
- [N955TS](https://openairdocs.org/aircraft/N955TS): [Texas Soaring Association Inc](https://openairdocs.org/faa-owner/TEXAS%20SOARING%20ASSOCIATION%20INC), [Midlothian, TX](https://openairdocs.org/faa-place/TX/Midlothian), built 2006, S/N 21815
- [N972AF](https://openairdocs.org/aircraft/N972AF): [Civil Air Patrol](https://openairdocs.org/faa-owner/CIVIL%20AIR%20PATROL), [Maxwell Afb, AL](https://openairdocs.org/faa-place/AL/Maxwell%20Afb), built 1986, S/N 21320
- [N975AF](https://openairdocs.org/aircraft/N975AF): [Civil Air Patrol](https://openairdocs.org/faa-owner/CIVIL%20AIR%20PATROL), [Maxwell Afb, AL](https://openairdocs.org/faa-place/AL/Maxwell%20Afb), built 1984, S/N 21237

## NTSB investigations (13)

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 WPR26LA299](https://openairdocs.org/ntsb/WPR26LA299), Aug 8, 2026: Schleicher ASK-21 (N361KS), Tehachapi, CA, substantial damage, investigation ongoing
- [NTSB ERA25LA009](https://openairdocs.org/ntsb/ERA25LA009), Oct 6, 2024: Schleicher ASK-21 (N341KS), Front Royal, VA, substantial damage. Probable cause: The pilot’s improper landing flare and subsequent improper recovery from a hard, bounced landing.
- [NTSB ERA14CA453](https://openairdocs.org/ntsb/ERA14CA453), Sep 20, 2014: Schleicher ASK 21 (N421SL), Wurtsboro, NY, substantial damage. Probable cause: A loss of lift during the landing approach, which resulted in impact with terrain.
- [NTSB WPR09CA479](https://openairdocs.org/ntsb/WPR09CA479), Jun 30, 2009: Schleicher ASK-21 (N63JJ), Jean, NV, substantial damage. Probable cause: The pilot's failure to maintain control of the glider during the initial climb due to an inadvertent encounter with wind.
- [NTSB MIA08CA136](https://openairdocs.org/ntsb/MIA08CA136), Jul 7, 2008: Schleicher ASK-21 (N363KS), Elmira, NY, substantial damage. Probable cause: The glider pilot's misjudged distance/altitude while soaring.
- [NTSB SEA08CA129](https://openairdocs.org/ntsb/SEA08CA129), May 10, 2008: Schleicher ASK-21 (N361KS), Tehachapi, CA, substantial damage. Probable cause: The pilot's inadequate preflight procedures and failure to check the spoiler control position, which resulted in the inadvertent deployment of the spoilers during takeoff. A contributing factor was…
- [NTSB ANC07LA046](https://openairdocs.org/ntsb/ANC07LA046), Jun 9, 2007: Schleicher ASK-21 (N621CP), Clear, AK, substantial damage. Probable cause: The dual student's misjudged distance/altitude during the final approach to land, and the flight instructor's inadequate supervision of the student, which resulted in an undershoot, and substantial…
- [NTSB ANC04FA016](https://openairdocs.org/ntsb/ANC04FA016), Dec 28, 2003: Schleicher ASK-21 (N274KS), Peoria, AZ, destroyed, 4 fatal. Probable cause: The inadequate visual lookout by the pilots of both aircraft, which resulted in their failure to see-and-avoid each other's aircraft and a subsequent midair collision. A factor associated with the…
- [NTSB IAD02LA059](https://openairdocs.org/ntsb/IAD02LA059), Jun 16, 2002: Schleicher ASK21 (N341KS), Woodstock, VA, substantial damage. Probable cause: The pilot's failure to recognize the loss of orographic lift conditions. A factor was the loss of orographic lift.
- [NTSB ATL01LA098](https://openairdocs.org/ntsb/ATL01LA098), Aug 26, 2001: Schleicher ASK-21 (N121FL), Eagleville, TN, substantial damage. Probable cause: The loss of thermals during the glider flight that resulted in the collision with high vegetation while maneuvering for an emergency landing. A factor was high vegetation.
- [NTSB LAX89LA038](https://openairdocs.org/ntsb/LAX89LA038), Nov 6, 1988: Schleicher ASK-21 (N129KS), Vacaville, CA, substantial damage
- [NTSB ATL87DLT01](https://openairdocs.org/ntsb/ATL87DLT01), Apr 17, 1987: Schleicher ASK-21 (N174KS), Eagleville, TN, substantial damage
- [NTSB CHI87DEE06](https://openairdocs.org/ntsb/CHI87DEE06), Mar 7, 1987: Schleicher ASK-21 (N694KS), Plainfield, IL, substantial damage

## FAA accident and incident reports (15)

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 20260810012772A](https://openairdocs.org/incident/20260810012772A), Aug 10, 2026: Schleicher ASK-21 (N361KS), Tehachapi, CA, Substantial damage. On August 10, 2026, about 1053 pacific daylight time (PDT), an ask 21 glider airplane, tail number [privacy data omitted], was substantilly damaged when it was…
- [Accident 20241006014879A](https://openairdocs.org/incident/20241006014879A), Oct 6, 2024: Schleicher ASK-21 (N341KS), Front Royal, VA, Substantial damage. Aircraft inspected 10/23/2024. Aircraft sustained structeral damage to fuselage due to hard landing. Reviewed aircraft records and found no issues. Started…
- [Accident 20201006020229A](https://openairdocs.org/incident/20201006020229A), Oct 6, 2020: Schleicher ASK-21 (N694KS), Minden, NV, Substantial damage. After returning from an aero tow the pilot entered the pattern for right traffic to runway 30. On the downwind leg, the pilot applied ¼ to ½ inch airbrakes…
- [Incident 20170423015009I](https://openairdocs.org/incident/20170423015009I), Apr 23, 2017: Schleicher ASK-21 (N621CP), Birchwood, AK, Minor damage. Conducting glider training (early returns), landed in clear grassy area after intentionally disengaging the tow rope too soon
- [Accident 20140920017749A](https://openairdocs.org/incident/20140920017749A), Sep 20, 2014: Schleicher ASK-21 (N421SL), Wurtzboro, NY, Substantial damage. Student pilot on first solo, undershot runway on approach and crashed short of the runway
- [Accident 20090630020239A](https://openairdocs.org/incident/20090630020239A), Jun 30, 2009: Schler ASK21 (N63JJ), Jean, NV, Substantial damage. During the launch phase upon reaching 60 knots airspeed, the pilot rotated and climbed to approximately 50 feet AGL, with the same airspeed the glider would…
- [Incident 20080630842819I](https://openairdocs.org/incident/20080630842819I), Jun 30, 2008: Schler ASK21 (N221SB), Warren, VT, Minor damage. (-23) [privacy data omitted] pilot in command of glider N221SB, was participating in a local glider contest. [privacy data omitted] Stated that he became…
- [Accident 20080510857669A](https://openairdocs.org/incident/20080510857669A), May 10, 2008: Schlei ASK21 (N361KS), Tehachapi, CA, Substantial damage. During the takeoff sequence prior to reaching 200 feet, the tow pilot noted that the spoilers were open on the glider. He wagged the rudder, which is the…
- [Accident 20070609010899A](https://openairdocs.org/incident/20070609010899A), Jun 9, 2007: Schler ASK21 (N621CP), Clear, AK, Substantial damage. (-23) This accident occurred during an airforce funded cadet training exercise. By definition an airforce mission (#A-20). The glider landed short of rwy 01 on…
- [Accident 20031228036512A](https://openairdocs.org/incident/20031228036512A), Dec 28, 2003: Schler ASK21 (N274KS), Peoria, AZ, Destroyed, 2 fatal. (-23) Witness statements indicate N2094M, a Piper J3C-65, took off from runway 5L at P48 and remained in left-closed traffic in a southwest direction. N274KS,…
- [Accident 20020616017729A](https://openairdocs.org/incident/20020616017729A), Jun 16, 2002: Schler ASK21 (N341KS), Woodstock, VA, No damage. (-23) Pilot stated that he was ridge flying, lost lift, made decision too late to try to find a place to land. While trying to make a turn back to the ridge…
- [Accident 20010826020529A](https://openairdocs.org/incident/20010826020529A), Aug 26, 2001: Schler ASK21 (N121FL), Eagleville, TN, No damage. (-23) During solo flight, loss thermal lift and forced to land in soy bean field, short of airport. Glider received substantial damage on landing.
- [Accident 19881106049459A](https://openairdocs.org/incident/19881106049459A), Nov 6, 1988: Schler ASK21 (N129KS), Vacaville, CA, Substantial damage. Too low and slow on final. Struck a fence short of the runway.
- [Accident 19870418020569A](https://openairdocs.org/incident/19870418020569A), Apr 18, 1987: Schler ASK21 (N174KS), Eagleville, TN, Substantial damage. The glider encountered unexpected sink on base leg. The instructor was unable to clear trees near the runway.
- [Accident 19870307005449A](https://openairdocs.org/incident/19870307005449A), Mar 7, 1987: Schler ASK21 (N674KS), Plainfield, IL, Substantial damage. Tow plane pilot released glider 15 feet AGL on takeoff. Gliders wing hit ground as pilot tried to land. Cartwheeled.

## Service difficulty reports (2)

As reported by operators and repair stations, by the model named in the report.

- [SDR 2011FA0000187](https://openairdocs.org/sdr/2011FA0000187), Mar 21, 2011: INTERLOCK. GROOVED. CANOPY INTERLOCKS ARE FABRICATED FROM A NYLON OR DELRON SYNTHETIC MATERIAL THAT BECAME WORN IN AN UNSEEN LOCATION. THE WEAR IS FROM THE FORWARD CANOPY METAL LOC
- [SDR 2009FA0000235](https://openairdocs.org/sdr/2009FA0000235), Mar 1, 2009: SLIP JOINT. CORRODED. CORROSION WAS FOUND AT THE JUNCTION OF THE UPPER AND LOWER BODY OF THE FRONT SEAT CONTROL STICK ASSY. THE UPPER STICK HALF SLIDES INTO THE LOWER STICK HALF AND 

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Alexander Schleicher ASK 21](https://openairdocs.org/model/alexander-schleicher-ask-21): 26 registered aircraft, registry code 3801539

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