# NTSB investigations: Schleicher ASK-21: Collision with terr/obj (non-CFIT)

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB ERA14CA453](https://openairdocs.org/ntsb/ERA14CA453.md): Schleicher ASK 21 · Wurtsboro, NY · Accident · Minor injuries · Data collection · Final report · Sep 20, 2014 · N421SL · Substantial damage
  > A loss of lift during the landing approach, which resulted in impact with terrain.
- [NTSB WPR09CA479](https://openairdocs.org/ntsb/WPR09CA479.md): Schleicher ASK-21 · Jean, NV · Accident · Minor injuries · Data collection · Final report · Jun 30, 2009 · N63JJ · Substantial damage
  > 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.md): Schleicher ASK-21 · Elmira, NY · Accident · No injuries · Data collection · Final report · Jul 7, 2008 · N363KS · Substantial damage
  > The glider pilot's misjudged distance/altitude while soaring.
- [NTSB SEA08CA129](https://openairdocs.org/ntsb/SEA08CA129.md): Schleicher ASK-21 · Tehachapi, CA · Accident · No injuries · Data collection · Final report · May 10, 2008 · N361KS · Substantial damage
  > 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 the pilot's misinterpretation of the tow pilot's instructions.

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
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_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('38015GY')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '470' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/470/sequence?model=38015GY

---
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.