# NTSB investigations: Allison 250-C20 series, 2012

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 WPR13CA057](https://openairdocs.org/ntsb/WPR13CA057.md): Hughes 369D · Sheridan, OR · Accident · Minor injuries · Data collection · Final report · Nov 27, 2012 · N163PJ · Substantial damage
  > The pilot’s failure to prevent the helicopter from entering a vortex ring state (settling with power) condition during an external load operation, which resulted in the helicopter’s main rotor blades impacting the truck.
- [NTSB CEN13FA009](https://openairdocs.org/ntsb/CEN13FA009.md): Bell 206B · Crowley, LA · Accident · 1 fatal · Field investigation · Final report · Oct 10, 2012 · N333DR · Substantial damage
  > The pilot’s failure to maintain clearance from the broadcast tower guy-wires.
- [NTSB WPR12LA328](https://openairdocs.org/ntsb/WPR12LA328.md): Hughes Helicopters 369E · The Dalles, OR · Accident · Serious injuries · Limited investigation · Final report · Jul 26, 2012 · N427WC · Substantial damage
  > The loss of engine power due to fuel starvation, which resulted from the fuel tank supply pickup becoming unported while the helicopter was pulling power lines.
- [NTSB CEN12FA321](https://openairdocs.org/ntsb/CEN12FA321.md): Bell 206-L4 · (Gulf of Mexico) · Accident · 1 fatal · Field investigation · Final report · May 28, 2012 · N7077F · Substantial damage
  > The pilot’s failure to maintain clearance from an obstacle while landing on an obstructed helipad, which resulted in a collision and loss of control. Contributing to the accident was the failure of the helipad owner to mark the helipad closed and the failure…
- [NTSB CEN12CA319](https://openairdocs.org/ntsb/CEN12CA319.md): Hughes 369HS · Delavan, MN · Accident · Serious injuries · Data collection · Final report · May 25, 2012 · N11ZX · Substantial damage
  > The pilot’s failure to maintain clearance with power lines during an aerial application flight.
- [NTSB WPR12LA125](https://openairdocs.org/ntsb/WPR12LA125.md): Aerospatiale AS 355F1 · Makakilo City, HI · Accident · No injuries · Limited investigation · Final report · Mar 3, 2012 · N101MZ · Substantial damage
  > A partial loss of engine power while maneuvering over rough/uneven terrain that was precipitated by the failure of a 3rd stage turbine blade as a result of high-cycle fatigue.

## 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 year(c."eventDate") = 2012
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03020'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03020&year=2012

---
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.