# NTSB investigations: Hiller UH-12E: Roll over

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 SEA05CA104](https://openairdocs.org/ntsb/SEA05CA104.md): Hiller UH-12E · Estacada, OR · Accident · Minor injuries · Data collection · Final report · May 23, 2005 · N3030H · Substantial damage
  > The failure of the pilot to maintain landing skid clearance during hover taxi, which resulted in a dynamic rollover. A factor was the gusty wind condition.
- [NTSB CHI96LA151](https://openairdocs.org/ntsb/CHI96LA151.md): Hiller UH-12E · Big Lake, MN · Accident · Minor injuries · Limited investigation · Final report · May 4, 1996 · N177HA · Substantial damage
  > the pilot's inadequate preflight of the helicopter by not having removed a tiedown strap before attempting takeoff.
- [NTSB LAX87DUJ05](https://openairdocs.org/ntsb/LAX87DUJ05.md): Hiller UH-12E · Tolleson, AZ · Accident · No injuries · Final report · May 19, 1987 · N4034T · Destroyed
  > The plt stated that he landed the acft on a platform on top of a chemical tank truck. The truck was parked on a slight slope with its left side six inches lower than the right. The plt reduced power to idle and the loader began to load the helicopter with…
- [NTSB SEA84LA091](https://openairdocs.org/ntsb/SEA84LA091.md): Hiller UH-12E · Buxton, OR · Accident · No injuries · Limited investigation · Final report · Apr 19, 1984 · N56BA · Substantial damage
  > The helicopter entered an uncontrolled right roll while lifting off from a trailer & struck the ground with the m/r. the plt reported the trailer was not level.

## 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 ('4360122', '4360137')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 380))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=4360122&occurrence=380

---
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.