# Fatal NTSB investigations: Hiller UH-12D

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 WPR20LA224](https://openairdocs.org/ntsb/WPR20LA224.md): Hiller UH 12D · Mehama, OR · Accident · 1 fatal · Class 3 · Limited · Final report · Jul 17, 2020 · N2297W · Destroyed
  > An in-flight separation of a tail rotor blade due to fatigue cracking and overstress, which resulted in a loss of directional control and subsequent ground impact.
- [NTSB ATL90FA089](https://openairdocs.org/ntsb/ATL90FA089.md): Hiller UH-12D · Soddy-Daisy, TN · Accident · 1 fatal · Field investigation · Final report · Mar 31, 1990 · N94496 · Substantial damage
  > Fatigue induced failure of the collective pitch push rod (adjustable) during flight, and the failure of the pilot to provide routine maintenance. The pilot's lack of expereince and his failure to obtain required training and certification were factors in the…
- [NTSB ATL87FA147](https://openairdocs.org/ntsb/ATL87FA147.md): Hiller UH-12D (H23) · Spartanburg, SC · Accident · 1 fatal · Field investigation · Final report · May 24, 1987 · N6408 · Destroyed
  > During a local pleasure flight above the treetops, the passenger reported that they heard a loud 'pop' over the sound of the engine. The plt told her that they were going down and she noticed the main rotor blades began to turn slower than usual before the…
- [NTSB SEA79AA029](https://openairdocs.org/ntsb/SEA79AA029.md): Hiller UH12D · Chehalis, WA · Accident · 1 fatal · Closed · Apr 3, 1979 · N64867 · Minor damage
- [NTSB ANC76AA123](https://openairdocs.org/ntsb/ANC76AA123.md): Hiller Acft UH12EJ · Sheep Mountain, AK · Accident · 1 fatal · Closed · Aug 15, 1976 · N47078 · 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."highestInjuryLevel" = 'Fatal'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('4360118'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?fatal=1&model=4360118

---
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.