# NTSB investigations: Lycoming VO-540 series, AZ

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 WPR09CA008](https://openairdocs.org/ntsb/WPR09CA008.md): Bell 47J-2A · Florence, AZ · Accident · No injuries · Data collection · Final report · Oct 11, 2008 · N8567F · Substantial damage
  > The pilot’s inadequate compensation for a wind shift encountered during the landing approach, which resulted in a hard landing and rollover. Contributing to the accident was the encounter with the wind shift.
- [NTSB LAX90DUJ03](https://openairdocs.org/ntsb/LAX90DUJ03.md): Hiller UH-12E · Yuma, AZ · Accident · Serious injuries · Final report · Oct 11, 1989 · N689SB · Substantial damage
  > The pilot misjudged the flare altitude. Contributing to this accident was the failure of the engine torsional coupling which ultimately caused the total loss of power.
- [NTSB LAX89DUJ09](https://openairdocs.org/ntsb/LAX89DUJ09.md): Hiller UH-12E · Tolleson, AZ · Accident · Minor injuries · Final report · Aug 16, 1989 · N7086 · Substantial damage
  > An engine failure due to water contamination in the fuel supply which preceded an autorotation and collision with the ground during night time conditions.
- [NTSB LAX87DUJ11](https://openairdocs.org/ntsb/LAX87DUJ11.md): Hiller UH-12E · Scottsdale, AZ · Accident · Minor injuries · Final report · Sep 1, 1987 · N236HA · Destroyed
  > During an aerial application flight, the plt made a turn-around & was starting to make another swath run when he heard a loud 'bang' & then the helicopter collided with terrain. An inspn of the main rotor head & pin revealed the hub had failed from hi cycle…
- [NTSB LAX84LA494](https://openairdocs.org/ntsb/LAX84LA494.md): Hiller UH12ET · Yuma, AZ · Accident · Serious injuries · Limited investigation · Final report · Sep 25, 1984 · N9278Z · Destroyed
  > The pilot stated that he was carrying a load of pesticide for application on a broccoli field. The aircraft was in level flight, approximately 4 to 8 feet AGL when it became uncontrollable and impacted the ground. The aircraft was consumed by a post crash…
- [NTSB LAX82DA306](https://openairdocs.org/ntsb/LAX82DA306.md): Hiller UH-12E · Chandler, AZ · Accident · No injuries · Final report · Aug 20, 1982 · N4026S · Substantial damage
  > The pilot was spraying liquid chemicals at night. The pilot flew into his own wake turbulence and lost control and collided with the ground. Control was regained to make an upright landing in the field. Skids were torn off the aircraft.
- [NTSB LAX80DUJ91](https://openairdocs.org/ntsb/LAX80DUJ91.md): Hiller Acft UH-12E · Sommerton, AZ · Accident · No injuries · Closed · Jul 31, 1980 · N9278Z · Substantial damage
- [NTSB LAX79DUJ36](https://openairdocs.org/ntsb/LAX79DUJ36.md): Hiller UH12E · Yuma, AZ · Accident · No injuries · Closed · Nov 4, 1978 · N62349 · Destroyed
- [NTSB LAX79DUJ04](https://openairdocs.org/ntsb/LAX79DUJ04.md): Hiller UH-12E · Queen Creek, AZ · Accident · Minor injuries · Closed · Oct 14, 1978 · N518HA · Destroyed
- [NTSB LAX77DUJ82](https://openairdocs.org/ntsb/LAX77DUJ82.md): Hiller Acft UH-12E · Yuma, AZ · Accident · No injuries · Closed · Jul 28, 1977 · N62349 · Destroyed
- [NTSB LAX77DUJ42](https://openairdocs.org/ntsb/LAX77DUJ42.md): Bell 47J-2A · Kingman, AZ · Accident · No injuries · Closed · Apr 9, 1977 · N26521 · Substantial damage
- [NTSB LAX76DUJ80](https://openairdocs.org/ntsb/LAX76DUJ80.md): Hiller Acft UH-12E · Somerton, AZ · Accident · No injuries · Closed · May 11, 1976 · N9278Z · Substantial damage
- [NTSB LAX72AL018](https://openairdocs.org/ntsb/LAX72AL018.md): Hiller Acft UH12L4 · Grnd Canyon, AZ · Accident · Minor injuries · Closed · Sep 1, 1971 · N90486 · Destroyed
- [NTSB LAX68A0080](https://openairdocs.org/ntsb/LAX68A0080.md): Hiller UN-12L · Windna, AZ · Accident · Minor injuries · Closed · Feb 27, 1968 · N9780C · Substantial damage
- [NTSB DEN65A0066](https://openairdocs.org/ntsb/DEN65A0066.md): Hiller UH12E · Ne Bouse, AZ · Accident · No injuries · Closed · Apr 15, 1965 · N9784C · Substantial damage
- [NTSB DEN65A0065](https://openairdocs.org/ntsb/DEN65A0065.md): Bell 47G3B1 · Payson, AZ · Accident · Minor injuries · Closed · Apr 11, 1965 · N1198W · 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" = 'AZ' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41534', '41582'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41534&state=AZ

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