# NTSB investigations: Allison 250 SER 400HP, 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 WPR11CA243](https://openairdocs.org/ntsb/WPR11CA243.md): Bell 206B3 · Glendale, AZ · Accident · No injuries · Data collection · Final report · May 27, 2011 · N59383 · Substantial damage
  > The certified flight instructor's failure to maintain adequate main rotor RPM during the autorotation.
- [NTSB ANC03LA015](https://openairdocs.org/ntsb/ANC03LA015.md): Bell 206B · Kingman, AZ · Accident · 1 fatal · Limited investigation · Final report · Nov 15, 2002 · N16962 · Substantial damage
  > The pilot's failure to maintain altitude/clearance from obstacles during cruise flight, which resulted in the helicopter striking a transmission line, and subsequently the ground.
- [NTSB LAX98LA139](https://openairdocs.org/ntsb/LAX98LA139.md): Bell 206B · Grand Canyon, AZ · Accident · No injuries · Limited investigation · Final report · Apr 20, 1998 · N8533F · Substantial damage
  > The malfunction and erratic speed control of the engine's governor, and the flight instructor's delayed remedial action.
- [NTSB LAX97LA030](https://openairdocs.org/ntsb/LAX97LA030.md): Bell 206B · Supai, AZ · Accident · Minor injuries · Limited investigation · Final report · Nov 1, 1996 · N90144 · Destroyed
  > improper routing of the external cargo hoist cable (over helicopter skid), which resulted in lateral imbalance and roll-over of the helicopter, as weight on the cable became effective.
- [NTSB LAX82DA140](https://openairdocs.org/ntsb/LAX82DA140.md): Hughes 369HS · 8 S. Of Page, AZ · Accident · 3 fatal · Final report · Apr 18, 1982 · N4EE · Destroyed
  > The aircraft was number two in a trail of three helicopters flying up the Colorado river at marble canyon to page, AZ when it struck an aerial cableway stretching across the river, 22 ft above the water. Witnesses stated that after the collision the…
- [NTSB LAX80DUJ45](https://openairdocs.org/ntsb/LAX80DUJ45.md): Bell 206B · Ashfork, AZ · Accident · Minor injuries · Closed · Apr 10, 1980 · N777PS · Destroyed
- [NTSB LAX79FA064](https://openairdocs.org/ntsb/LAX79FA064-134226.md): Bell 206B · Grand Canyon, AZ · Accident · Minor injuries · Closed · Aug 3, 1979 · N8533F · Substantial damage
- [NTSB LAX75DUJ55](https://openairdocs.org/ntsb/LAX75DUJ55-201470.md): Bell 206B · Glendale, AZ · Accident · No injuries · Closed · Jan 14, 1975 · N59383 · Substantial damage
- [NTSB LAX70D0198](https://openairdocs.org/ntsb/LAX70D0198.md): Bell 47G3B1 · Parker, AZ · Accident · No injuries · Closed · Nov 5, 1969 · N614 · 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 ('03013', '03012'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03013&state=AZ

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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.