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Alexander Schleicher ASK 21

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Aircraft model · Glider · Glider · registry code 3801539

Manufacturer (registry)
ALEXANDER SCHLEICHER GMBH & CO
Model
ASK 21
Registry code
3801539
Registered
26 aircraft
Type
Glider
Engines
None
Seats
2
Weight class
Up to 12,499 lb
Certification
Not type certificated
Data sheet
TCDSG47EU
Holder
Alexander Schleicher GmbH & Co. Segelflugzeugbau

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

On this page

Aircraft by year built · 20

1982Registered nowDeregistered2026

Airworthiness directives that may apply · 13

ADs whose products match this airframe model. Each AD’s applicability may narrow it by serial number, part number or configuration.

1984In forceSuperseded2026
Query with SQL
duckdb -csv -c "SELECT d.ad_number, d.status, d.subject, d.effective_date
  FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
  WHERE d.ad_id IN (SELECT ad_id FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_directive.parquet' WHERE aircraft_model_code IN ('3801539'))
  ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

Registered aircraft · 26

N202GGHollister Soaring Center LLC · Hollister, CABuilt 2008 · S/N 21832N214BSBrandywine Soaring Association · Hockessin, DEBuilt 2018 · S/N 21950N215ESEagle Sport Aviation Club · De Leon Springs, FLS/N 21829
See all 26 registered aircraft
Query with SQL
duckdb -csv -c "SELECT n_number, serial_number, year_manufactured, status, registrant_name, registrant_city, registrant_state
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet'
  WHERE aircraft_model_code IN ('3801539')
  ORDER BY n_number"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

NTSB investigations · 2

Aircraft matched to this model through the registry, by N-number and event date, checked against the reported serial number, make and model.

Defining event, 2008 on

Of 2 cases NTSB coded with a defining event. All defining events

In the probable cause, 2008 on

Findings NTSB made part of the probable cause. A case can have several. All findings

NTSB WPR22LA150Accident · No injuriesClass 4 · LimitedFinal reportAlexander Schleicher ASK 21 · Valyermo, CAThe gliders encounter with atmospheric conditions where the lift was not sufficient to maintain flight and subsequent impact with mountainous terrain.Apr 8, 2022 · N212NM · Substantial damageNTSB CEN20LA427Accident · No injuriesClass 4 · LimitedFinal reportSchleicher ASK21 · Hinckley, ILThe pilot’s improper control input during a bounced landing that resulted in the glider impacting terrain.Sep 29, 2020 · N721WC · Substantial damage
Query with SQL
duckdb -csv -c "SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
  FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = a.case_mkey
  WHERE a.aircraft_model_code IN ('3801539')
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

FAA incident reports · 3

Matched to this model through the registry, by N-number and event date, checked against the reported make and model.

Accident 20220408005169AAlexander Schleicher ASK 21 · Llano, CAWhile flying south along an ascending ridgeline at 8000 MSL at a speed of 55 knots, the aircraft lost lift. The aircraft had sink of 6 knots. The pilot turned the aircraft into a right bank angle to gain distance from the terrain at which point the right wing…Apr 8, 2022 · N212NM · Substantial damageAccident 20200929017129AAlexander Schleicher ASK 21 · Hinckley, ILTook a pattern tow to 1800 MSL to practice approach and landing. Flared late and bounced on main gear. Rose up about 2 feet. Slight push forward on the stick instead of re-stabilizing attitude, and nose wheel contacted the ground first.Sep 29, 2020 · N721WC · Substantial damageIncident 20200129000849IAlexander Schleicher ASK 21 · Hollister, CA-23 Hollister, CA (cvh): N202GG, ask 21 glider, cvh-cvh, crash landed on shoulder of san felipe road, approximately 100 yards West of runway 24.Jan 29, 2020 · N202GG · Minor damage
Query with SQL
duckdb -csv -c "SELECT report_number, event_date, event_type, city, state, aircraft_make, aircraft_model, aircraft_damage, fatal_injuries, n_number
  FROM 'https://openairdocs.org/data/latest/faa_incident_report.parquet'
  WHERE aircraft_model_code IN ('3801539')
  ORDER BY event_date DESC, report_number DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

Service difficulty reports · 2

SDR 2011FA0000187Interlock · groovedCANOPY 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 LOCKING ROD CONTINUOUSLY PUSHING OVER THE PLASTIC INTERLOCK. THE WORN INTERLOCK EVENTUALLY DID NOT ALMar 21, 2011 · N955TS · Schler ASK21 · Passenger/Crew DoorsSDR 2009FA0000235Slip Joint · corrodedCORROSION 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 IS THEN HELD TOGETHER WITH A SINGLE THROUGH BOLT. THE CORROSION WAS DETECTED PROTRUDING FROM THE TMar 1, 2009 · N966TS · Schler ASK21 · Control Column Section
Query with SQL
duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
  FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
  WHERE aircraft_model_key = 'ASK21'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

PMA parts · 2

Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this model on its data sheet, so check the FAA record before relying on it. Newest first.

APS66-10600Brake LiningAviation Products Systems Inc · Replaces AP66-106, SB66-10600, ES-66-62-FM… · May 7, 2002APS105-0200RivetAviation Products Systems Inc · Replaces AP105-2, SB105-0200, ES-105-2, 0105-0200 · May 7, 2002
Query with SQL
duckdb -csv -c "SELECT drs_guid, part_number, part_name, holder, pma_number, replaces_part, supplement_date, tcds_models
  FROM 'https://openairdocs.org/data/latest/faa_type_certificate_pma.parquet'
  WHERE tcds_number IN ('G47EU')
    AND len(list_intersect(tcds_models, ['ASK 21'])) > 0
  ORDER BY supplement_date DESC, drs_guid DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

The same model under other registry codes

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

Schleicher ASK-2143 registered aircraftRegistry code 38015GY
Query with SQL
duckdb -csv -c "SELECT m.code, m.manufacturer, m.model, count(g.n_number) AS aircraft
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_model.parquet' m LEFT JOIN 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet' g ON g.aircraft_model_code = m.code
  WHERE m.match_key = 'ASK21' AND m.code NOT IN ('3801539')
  GROUP BY ALL
  ORDER BY aircraft DESC
  LIMIT 12"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.