# NTSB investigations: Hiller OH-23C

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 ATL96LA023](https://openairdocs.org/ntsb/ATL96LA023.md): Hiller 12C · N. Myrtle Beach, SC · Accident · No injuries · Limited investigation · Final report · Dec 18, 1995 · N234SM · Substantial damage
  > The pilot's improper operation of the flight controls during a practice autorotation, and the certified flight instructor's inadequate supervision of the operation
- [NTSB MIA90LA182](https://openairdocs.org/ntsb/MIA90LA182.md): Hiller OH-23C · Fort Pierce, FL · Accident · No injuries · Limited investigation · Final report · Sep 11, 1990 · N96168 · Substantial damage
  > Loss of engine power due to separation of the packing seal which seals the distribution zone pipe to the inlet manifold, for undetermined reasons resulting in a hard landing.
- [NTSB DEN84LA262](https://openairdocs.org/ntsb/DEN84LA262.md): Hiller UH-12C · Kindred, ND · Accident · No injuries · Limited investigation · Final report · Aug 22, 1984 · N96168 · Substantial damage
  > The practice autorotation to touchdown began at 500 ft AGL. Shortly after initiating the flare the tail rotor contacted the ground. The pilot was scheduled for a private pilot helicopter check ride on the afternoon of the accident.

## 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 ('4360119'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=4360119

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