# NTSB investigations: Peterson Sailplane-Poly Ind. J-4

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 LAX85LA386](https://openairdocs.org/ntsb/LAX85LA386.md): Peterson J-4 · Tucson, AZ · Accident · No injuries · Limited investigation · Final report · Sep 8, 1985 · N29899 · Substantial damage
  > The student pilot stated that he observed a tow airplane and a glider on the runway as he turned onto the final aproach to land. He said that he continued his approach and when the tow aircraft and glider failed to take off he attempted to turn off the…
- [NTSB OAK76AP061](https://openairdocs.org/ntsb/OAK76AP061.md): Peterson J-4 · Vacaville, CA · Accident · 1 fatal · Closed · Jul 6, 1976 · N2488P · Destroyed

## 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 ('6820502'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=6820502

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