# NTSB investigations: Hughes OH-6A, TX

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 CEN13FA205](https://openairdocs.org/ntsb/CEN13FA205.md): Hughes OH-6A · Caddo, TX · Accident · 1 fatal · Field investigation · Final report · Mar 26, 2013 · N910WC · Substantial damage
  > The pilot’s failure to maintain control of the helicopter during landing.
- [NTSB DFW08TA066](https://openairdocs.org/ntsb/DFW08TA066.md): Hughes OH-6 · Valentine, TX · Accident · Minor injuries · Final report · Feb 8, 2008 · N66372 · Substantial damage
  > The contract mechanic's failure to properly secure the castellated nut that attached the governor lever control rod to the idler bell crank. Contributing to the accident was the lack of maintenance oversight by the operator.
- [NTSB FTW04TA012](https://openairdocs.org/ntsb/FTW04TA012.md): Hughes OH-6A · Eagle Pass, TX · Accident · Minor injuries · Final report · Oct 7, 2003 · N8524Z · Substantial damage
  > The failure of the aft segment of the tail rotor drive shaft for undertermined reasons. A contibuting factor was the lack of suitable terrain for the foced landing.
- [NTSB FTW00TA116](https://openairdocs.org/ntsb/FTW00TA116.md): Hughes OH-6A · El Paso, TX · Accident · Minor injuries · Final report · Apr 13, 2000 · N6187Y · Substantial damage
  > The failure of the pilot to maintain rotor rpm during an autorotation, which resulted in a hard landing. A factor was the partial loss of engine power resulting from the separation of the power control line due to fatigue, as a consequence of improper…
- [NTSB FTW99GA061](https://openairdocs.org/ntsb/FTW99GA061.md): Hughes OH-6A · Laredo, TX · Accident · Minor injuries · Final report · Dec 27, 1998 · N6638R · Substantial damage
  > The loss of engine power as result of the failure of the power turbine governor. A factor was the lack of suitable terrain available to the pilot for the forced landing.
- [NTSB FTW97TA162](https://openairdocs.org/ntsb/FTW97TA162.md): Hughes OH-6A · Marfa, TX · Accident · No injuries · Final report · Apr 15, 1997 · N6638P · Substantial damage
  > the pilot's improper touchdown, and the designated examiner's inadequate supervision. The light condition at dusk was a related factor.
- [NTSB FTW94T#A02](https://openairdocs.org/ntsb/FTW94T%23A02.md): Hughes OH-6A · Valentine, TX · Accident · No injuries · Class 3 · Final report · Jun 21, 1994 · N6636G · Destroyed
- [NTSB FTW93T#A02](https://openairdocs.org/ntsb/FTW93T%23A02.md): Hughes OH-6A (BP) · Marfa, TX · Accident · No injuries · Final report · Dec 1, 1992 · N6638J · Substantial damage

## 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."eventStateOrRegion" = 'TX' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('4470905'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=4470905&state=TX

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