# NTSB investigations: Jonker Sailplanes JS1-C

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 CEN19FA253](https://openairdocs.org/ntsb/CEN19FA253.md): Jonker Sailplanes JS1C · Cotulla, TX · Accident · 1 fatal · Class 3 · Field · Final report · Aug 7, 2019 · N213DT · Destroyed
  > The pilot’s failure to maintain sufficient airspeed of the glider, which resulted in exceedance of the glider's critical angle of attack and an aerodynamic stall/spin.
- [NTSB GAA18CA377](https://openairdocs.org/ntsb/GAA18CA377.md): Jonker Sailplanes JS1-C · Panguitch, UT · Accident · No injuries · Data collection · Final report · Jun 24, 2018 · N963CG · Substantial damage
  > The pilot’s inability to maintain altitude and his delayed decision to deploy the powered-glider’s engine, which necessitated an off-airport landing.
- [NTSB WPR14CA292](https://openairdocs.org/ntsb/WPR14CA292.md): Jonker Sailplanes JS1-C · Truckee, CA · Accident · Serious injuries · Data collection · Final report · Jul 14, 2014 · N501WG · Substantial damage
  > The pilot's failure to maintain aircraft control in gusting wind conditions while on final approach to the runway.
- [NTSB CEN14LA372](https://openairdocs.org/ntsb/CEN14LA372.md): Jonker Sailplanes JS1-C · Wallis, TX · Accident · 1 fatal · Limited investigation · Final report · Jul 13, 2014 · N60XJ · Substantial damage
  > The pilot’s loss of glider control and its subsequent impact with terrain for reasons that could not be determined due to a lack of available information.

## 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 ('056321V'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=056321V

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