# NTSB investigations: Allison 250-C20

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 WPR26LA086](https://openairdocs.org/ntsb/WPR26LA086.md): Bell 206L-3 · Logsden, OR · Accident · Serious injuries · Class 4 · Limited · Final report · Jan 15, 2026 · N868H · Substantial damage
  > The inadvertent entanglement of a long line with the skid, which resulted in a loss of flight control. Contributing to the accident was the use of nylon lines instead of steel cables to secure the bucket.
- [NTSB CEN22LA323](https://openairdocs.org/ntsb/CEN22LA323.md): Bell 206B · Verona, IL · Accident · No injuries · Class 3 · Limited · Final report · Jul 18, 2022 · N6BU · Substantial damage
  > A loss of rotor rpm for reasons that could not be determined.
- [NTSB ERA21LA368](https://openairdocs.org/ntsb/ERA21LA368.md): Hughes 369 · Ash, NC · Accident · No injuries · Class 3 · Limited · Final report · Sep 17, 2021 · N420AT · Substantial damage
  > A partial loss of engine power due to corrosion and erosion damage to the engine’s compressor section components.
- [NTSB WPR21LA130](https://openairdocs.org/ntsb/WPR21LA130.md): Bell 206B · Laton, CA · Accident · Minor injuries · Class 4 · Limited · Final report · Mar 13, 2021 · N161BH · Substantial damage
  > The pilot’s failure to maintain clearance from powerlines during low-altitude maneuvering.
- [NTSB WPR20LA323](https://openairdocs.org/ntsb/WPR20LA323.md): MD Helicopter 369 · Chemehuevi Valley, CA · Accident · No injuries · Class 4 · Limited · Final report · Sep 22, 2020 · N509CG · Substantial damage
  > The pilot’s failure to maintain helicopter control during an approach with a gusting variable wind, which resulted in an impact with terrain.
- [NTSB CEN18LA260](https://openairdocs.org/ntsb/CEN18LA260.md): Bell 206 · Bentley, IL · Accident · No injuries · Limited investigation · Final report · Jul 6, 2018 · N224KM · Substantial damage
  > The pilot's failure to ensure that adequate fuel was on board for the maneuvering flight, which resulted in a total loss of engine power due to fuel starvation.
- [NTSB GAA16CA071](https://openairdocs.org/ntsb/GAA16CA071.md): Bell 206 · Christmas Island, Kiribati · Accident · No injuries · Data collection · Final report · Oct 20, 2015 · N1060C · Substantial damage
  > The pilot's inadequate preflight inspection and the maintenance crew's failure to remove the tie down.
- [NTSB WPR13LA303](https://openairdocs.org/ntsb/WPR13LA303.md): Bell 206L-3 · Missoula, MT · Accident · Serious injuries · Limited investigation · Final report · Jun 28, 2013 · N868H · Substantial damage
  > The pilot's failure to prevent the helicopter from settling with power and to maintain proper position relative to an external load, which resulted in a loss of control and subsequent hard landing.
- [NTSB WPR13LA137](https://openairdocs.org/ntsb/WPR13LA137.md): Hughes 369HS · Latangai Island, Papua New Guinea · Accident · 1 fatal · Limited investigation · Final report · Mar 2, 2013 · N471M · Substantial damage
  > The failure of both the pilot and the fish master of the vessel to adequately monitor their environment, which resulted in a collision.
- [NTSB ERA12LA366](https://openairdocs.org/ntsb/ERA12LA366.md): Bell 206B · Longboat Key, FL · Accident · No injuries · Limited investigation · Final report · May 25, 2012 · N806LA · Substantial damage
  > Unknown personnel's failure to comply with the engine manufacturer's engine fuel pump replacement guidance, which resulted in a total loss of engine power due to the engine fuel pump failure.
- [NTSB ERA09CA138](https://openairdocs.org/ntsb/ERA09CA138.md): MD Helicopter 369E · Atlanta, GA · Accident · No injuries · Data collection · Final report · Jan 20, 2009 · N369PD · Substantial damage
  > Wind gusts during engine shutdown, which resulted in the main rotor blades contacting the tailboom.
- [NTSB CHI02LA285](https://openairdocs.org/ntsb/CHI02LA285.md): Hughes 369D · O'Neill, NE · Accident · Minor injuries · Limited investigation · Final report · Sep 17, 2002 · N500EK · Substantial damage
  > A loss of engine power due to turbine blade separation as a result of hot corrosion damage to the turbine blades. Contributing to the accident was the pilot misjudging the flare at the completion of the autorotation resulting in a hard landing. The dark night…
- [NTSB IAD99LA015](https://openairdocs.org/ntsb/IAD99LA015.md): Bell 206-B · Louisville, KY · Accident · Minor injuries · Limited investigation · Final report · Nov 12, 1998 · N32KY · Substantial damage
  > A loose 'B' nut on the aircraft's PC Air line which resulted in fuel starvation, and the pilot's abrupt application of aft cyclic to prevent a nose over. Contributing factors were soft terrain and dark night conditions.
- [NTSB NYC73FHJ03](https://openairdocs.org/ntsb/NYC73FHJ03.md): Bell 206A · Flushing, NY · Accident · No injuries · Closed · Jul 14, 1972 · N4042G · 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03080'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03080

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