# NTSB investigations: Allison 250-C47 series: Loss of control in flight

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 WPR22LA333](https://openairdocs.org/ntsb/WPR22LA333.md): Bell 407 · Mount Baldy, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 4, 2022 · N687AM · Substantial damage
  > The pilot’s failure to ensure the throttle was properly positioned before commencing an approach to land, which resulted in a low rotor rpm condition and impact with terrain. Contributing to the accident was a worn throttle detent.
- [NTSB CEN19FA095](https://openairdocs.org/ntsb/CEN19FA095.md): Bell 407 · Galliano, LA · Accident · 2 fatal · Class 2 · Field · Final report · Mar 10, 2019 · N577AL · Destroyed
  > The pilot's loss of control during cruise flight as a result of spatial disorientation while operating the helicopter in close proximity to terrain in marginal meteorological conditions.
- [NTSB CEN16LA386](https://openairdocs.org/ntsb/CEN16LA386.md): Bell 407 · Lawton, OK · Accident · Serious injuries · Limited investigation · Final report · Sep 29, 2016 · N361SF · Substantial damage
  > The pilot's loss of helicopter control during landing, which resulted in a hard landing and collision with a wall.
- [NTSB WPR16FA037](https://openairdocs.org/ntsb/WPR16FA037.md): Bell 407 · McFarland, CA · Accident · 4 fatal · Field investigation · Final report · Dec 11, 2015 · N408FC · Destroyed
  > The pilot's loss of control and collision with terrain while attempting a course reversal after inadvertently entering an area of reduced visibility weather conditions. Contributing to the accident was the pilot's lack of recent experience with night time…
- [NTSB CEN16LA058](https://openairdocs.org/ntsb/CEN16LA058.md): Mcdonnell Douglas Helicopter 600N · Angleton, TX · Accident · Minor injuries · Limited investigation · Final report · Dec 7, 2015 · N607BP · Substantial damage
  > A loss of control while hovering for reasons that could not be determined, because postaccident examination revealed no mechanical anomalies or failures that would have precluded normal operation.
- [NTSB WPR14LA173](https://openairdocs.org/ntsb/WPR14LA173.md): Mcdonnell Douglas Helicopter 600N · Adelanto, CA · Accident · Serious injuries · Limited investigation · Final report · Apr 27, 2014 · N606BP · Substantial damage
  > The commercial pilot’s improper control inputs, which resulted in a loss of helicopter control during takeoff.
- [NTSB CHI08CA098](https://openairdocs.org/ntsb/CHI08CA098.md): McDonnell Douglas 600N · Waverly, OH · Accident · Minor injuries · Data collection · Final report · Mar 26, 2008 · N160KC · Substantial damage
  > The pilot's improper flare.

## 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.engine_model_code IN ('03029')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '240'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/240/cases?engine=03029

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