# NTSB investigations: Rolls-Royce 250-C47B

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 ERA27FA010](https://openairdocs.org/ntsb/ERA27FA010.md): Bell 407 · Myakka City, FL · Accident · 1 fatal · Class 3 · Field · Investigation open · Oct 16, 2026 · N618TS
- [NTSB ERA26FA309](https://openairdocs.org/ntsb/ERA26FA309.md): Cessna 150 · Carlisle, PA · Accident · 1 fatal · Class 3 · Field · Preliminary report · Aug 19, 2026 · N23330 · 2 aircraft · Destroyed
  > On August 19, 2026, at 1852 eastern daylight time, a Bell Helicopter Textron Canada 407, N873ST, and a Cessna 150H airplane, N23330, collided in flight near Carlisle, Pennsylvania. The two commercial pilots onboard the helicopter were seriously injured, and…
- [NTSB CEN26LA185](https://openairdocs.org/ntsb/CEN26LA185.md): Bell 407 · Dallas, TX · Accident · No injuries · Class 3 · Limited · Final report · May 13, 2026 · N652AE · Substantial damage
  > The pilot’s failure to maintain situational awareness and clearance from the helipad surveillance camera during liftoff.
- [NTSB WPR26LA172](https://openairdocs.org/ntsb/WPR26LA172.md): Bell 407 · Young, AZ · Accident · No injuries · Class 4 · Limited · Final report · Apr 29, 2026 · N407BB · Substantial damage
  > The pilot’s failure to maintain clearance from a tree stump during landing in mountainous terrain.
- [NTSB ERA26LA170](https://openairdocs.org/ntsb/ERA26LA170.md): Bell 407 · Jacksonville, FL · Accident · No injuries · Class 4 · Limited · Final report · Apr 11, 2026 · N314JP · Substantial damage
  > The pilot’s improper recovery from a practice autorotation, which resulted in a hard landing. Contributing to the accident was the flight instructor’s inadequate supervision of the pilot receiving the instruction.
- [NTSB WPR26LA099](https://openairdocs.org/ntsb/WPR26LA099.md): Bell Helicopter Textron Canada BHT407 · Libby, MT · Accident · No injuries · Class 4 · Limited · Final report · Feb 5, 2026 · N407VS · Substantial damage
  > The pilot's failure to maintain clearance from a light post during landing.
- [NTSB WPR26FA098](https://openairdocs.org/ntsb/WPR26FA098.md): Bell 407 · Flagstaff, AZ · Accident · 2 fatal · Class 3 · Field · Preliminary report · Feb 5, 2026 · N56AZ · Destroyed
  > On February 4, 2026, at 2216 mountain standard time, a Bell 407 helicopter, N56AZ, was substantially damaged when it was involved in an accident near Flagstaff, Arizona. The pilot and tactical flight officer (TFO) were fatally injured. The helicopter was…
- [NTSB ENG24LA028](https://openairdocs.org/ntsb/ENG24LA028.md): Bell 407 · Oktaha, OK · Incident · No injuries · Class 3 · Limited · Final report · Jul 26, 2024 · N793SF · Minor damage
  > The loss of engine power due to high cycle fatigue failure of a power turbine stage 3 turbine wheel blade. The resulting engine imbalance caused a decoupling of the gas producer stage 1 and stage 2 turbine wheels leading to a stage 1 turbine overspeed and…
- [NTSB CEN24LA143](https://openairdocs.org/ntsb/CEN24LA143.md): Bell Helicopter Textron Canada 407 · Moran, KS · Accident · No injuries · Class 4 · Limited · Final report · Mar 29, 2024 · N910GX · Substantial damage
  > An in-flight collision with birds while in cruise flight.
- [NTSB ERA24LA045](https://openairdocs.org/ntsb/ERA24LA045.md): Bell 407 · Chesterfield, VA · Accident · No injuries · Class 4 · Limited · Final report · Nov 16, 2023 · N26VA · Substantial damage
  > A hard landing, which resulted in a main rotor strike of the left vertical stablizer.
- [NTSB ERA24FA003](https://openairdocs.org/ntsb/ERA24FA003.md): Bell Helicopter Textron Canada 407 · Croydon, NH · Accident · 1 fatal · Class 3 · Field · Final report · Oct 8, 2023 · N802JR · Substantial damage
  > The pilot’s loss of control during the initial climb in dark night conditions due to spatial disorientation, which resulted in a steep banking descent into trees and terrain. Contributing to the accident was the pilot’s lack of recent night flight experience,…
- [NTSB ERA23LA319](https://openairdocs.org/ntsb/ERA23LA319.md): Bell Helicopter Textron Canada 407 · North Charleston, SC · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 1, 2023 · N31PB · Substantial damage
  > A failure of the tail rotor pitch change lever assembly due to incorrectly installed bolts and maintenance personnel’s inadequate inspection of the tail rotor control system.
- [NTSB CEN23FA071](https://openairdocs.org/ntsb/CEN23FA071.md): Bell 407 · Galliano, LA · Accident · 4 fatal · Class 3 · Field · Final report · Dec 29, 2022 · N595RL · Substantial damage
  > The pilot’s failure to ensure the helicopter was clear of obstacles before takeoff from the helideck, which resulted in the helicopter’s right landing skid pivoting about a helideck perimeter light during takeoff and a dynamic rollover. Additionally, the…
- [NTSB CEN23LA053](https://openairdocs.org/ntsb/CEN23LA053.md): Bell 407 · Searcy, AR · Accident · No injuries · Class 4 · Limited · Final report · Nov 19, 2022 · N184SF · Substantial damage
  > The pilot’s failure to maintain clearance from the electrical box while repositioning.
- [NTSB ERA22FA257](https://openairdocs.org/ntsb/ERA22FA257.md): Bell Helicopter Textron Canada 407 · Fairfield, NJ · Accident · Serious injuries · Class 3 · Field · Final report · Jun 4, 2022 · N98ZA · Substantial damage
  > The failure of maintenance personnel to properly secure the tail rotor crosshead drive plate and the failure of maintenance personnel, the maintenance pilot, and the accident pilot to detect the error, which led to the helicopter’s loss of tail rotor…
- [NTSB WPR22LA174](https://openairdocs.org/ntsb/WPR22LA174.md): Bell Helicopter Textron Canada 407 · Livermore, CA · Accident · Serious injuries · Class 3 · Limited · Final report · May 11, 2022 · N999GH · Substantial damage
  > Loss of engine power due to the pilot inadvertently selecting engine IDLE mode while in flight, which reduced rotor and engine speed to a level that could not sustain flight.
- [NTSB CEN21LA456](https://openairdocs.org/ntsb/CEN21LA456.md): Bell 407 · Patterson, LA · Accident · No injuries · Class 4 · Limited · Final report · Sep 25, 2021 · N662RL · Substantial damage
  > The pilot’s failure to maintain adequate clearance from a parked helicopter while hovering to reposition for takeoff.
- [NTSB ERA21LA264](https://openairdocs.org/ntsb/ERA21LA264.md): Bell 407 · Tampa, FL · Accident · No injuries · Class 4 · Limited · Final report · Jun 22, 2021 · N512TP · Substantial damage
  > The pilot’s improper landing flare while making a power off practice autorotative landing. Contributing was the decreased visual cues provided by the recently paved runway during the night landing conducted with the aid of night vision goggles.
- [NTSB CEN20CA395](https://openairdocs.org/ntsb/CEN20CA395.md): Bell 407 · Fort Worth, TX · Accident · No injuries · Class 4 · Data collection · Final report · Sep 15, 2020 · N489DM · Substantial damage
  > The flight instructor’s delay in rolling the throttle to the fly position during a practice autorotation maneuver that resulted in a hard landing.
- [NTSB CEN20WA246](https://openairdocs.org/ntsb/CEN20WA246.md): Bell 407 · Long Marston, United Kingdom · Accident · No injuries · Foreign investigation · Jun 24, 2020 · N120HH · Destroyed
  > The government of the United Kingdom has notified the NTSB of an accident involving a Bell 407 helicopter that occurred on June 24, 2020. The NTSB has appointed a U.S. Accredited Representative to assist the government of the United Kingdom's investigation…
- [NTSB CEN19LA092](https://openairdocs.org/ntsb/CEN19LA092.md): Bell 407 · Union Center, SD · Accident · Minor injuries · Limited investigation · Final report · Mar 3, 2019 · N450AM · Substantial damage
  > The ambulance driver’s failure to see the helicopter’s rotating main rotor blades in dark night conditions, which resulted in the ambulance’s inadvertent collision with the helicopter. Contributing to the accident was the ambulance driver's failure to follow…
- [NTSB CEN19FA072](https://openairdocs.org/ntsb/CEN19FA072.md): Bell 407 · Zaleski, OH · Accident · 3 fatal · Class 1 · Field · Final report · Jan 29, 2019 · N191SF · Destroyed
  > The NTSB determines that the probable cause of this accident was Survival Flight's inadequate management of safety, which normalized pilots' and operations control specialists' noncompliance with risk analysis procedures and resulted in the initiation of the…
- [NTSB CEN18CA072](https://openairdocs.org/ntsb/CEN18CA072.md): Bell Helicopter Textron Canada 407 · Norfolk, NE · Accident · No injuries · Data collection · Final report · Jan 5, 2018 · N214AM · Substantial damage
  > Maintenance personnel’s failure to properly secure the tail rotor drive shaft cover, which resulted in the cover departing the helicopter in flight.
- [NTSB CEN18FA033](https://openairdocs.org/ntsb/CEN18FA033.md): Bell Helicopter Textron Canada 407 · Stuttgart, AR · Accident · 3 fatal · Field investigation · Final report · Nov 20, 2017 · N620PA · Destroyed
  > An in-flight loss of control due to bird strikes.
- [NTSB CEN17LA188](https://openairdocs.org/ntsb/CEN17LA188.md): Bell 407 · Fort Worth, TX · Accident · No injuries · Limited investigation · Final report · Jan 24, 2017 · N6040Y · Substantial damage
  > The flight instructor's failure to prevent the engine/rotor overspeed condition during the demonstration maneuver and the excessive descent rate during the emergency landing, which resulted in a hard landing. Contributing to the engine/rotor overspeed…
- [NTSB ERA16FA248](https://openairdocs.org/ntsb/ERA16FA248.md): Bell Helicopter Textron Canada 407 · Hickory, KY · Accident · 1 fatal · Field investigation · Final report · Jul 11, 2016 · N427TV · Substantial damage
  > Company maintenance personnel's inappropriate removal without replacement of the safety wires on the collective lever pin screws during a recent maintenance inspection, which resulted in the screws backing out and led to a loss of collective control in flight.
- [NTSB GAA16CA039](https://openairdocs.org/ntsb/GAA16CA039.md): Bell 407 · Cameron, LA · Accident · No injuries · Data collection · Final report · Oct 30, 2015 · N420PH · Substantial damage
  > The pilot's failure to remove a main rotor blade tiedown, which resulted in substantial damage to a main rotor blade when the engine was started.
- [NTSB CEN13FA122](https://openairdocs.org/ntsb/CEN13FA122.md): Bell Helicopter 407 · Clear Lake, IA · Accident · 3 fatal · Field investigation · Final report · Jan 3, 2013 · N445MT · Destroyed
  > The pilot’s inadvertent encounter with localized icing conditions and his subsequent in-flight loss of helicopter control.
- [NTSB WPR13TA081](https://openairdocs.org/ntsb/WPR13TA081.md): Bell Helicopter Textron Canada 407 · Renton, WA · Accident · No injuries · Final report · Dec 28, 2012 · N407KS · Substantial damage
  > The pilot's failure to maintain helicopter control during takeoff from an unstable landing platform. Contributing to the accident was the operator's inadequate chocking procedures for the wheeled landing platform, which included chocking only two of the…
- [NTSB CEN13CA114](https://openairdocs.org/ntsb/CEN13CA114.md): Bell 407 · McAllen, TX · Accident · No injuries · Data collection · Final report · Dec 25, 2012 · N489AE · Substantial damage
  > The pilot’s failure to maintain clearance with a parked helicopter during takeoff.
- [NTSB WPR13IA059](https://openairdocs.org/ntsb/WPR13IA059.md): Bell 407 · Riverton, WY · Incident · No injuries · Incident investigation · Final report · Nov 15, 2012 · N7160V · Minor damage
  > The pilot’s failure to maintain sufficient altitude to clear power lines while maneuvering at low altitude. Contributing to the accident was the pilot’s failure to follow company operating specifications for minimum altitude.
- [NTSB ERA13FA014](https://openairdocs.org/ntsb/ERA13FA014.md): Bell 407 · Coolbaugh Township, PA · Accident · 2 fatal · Field investigation · Final report · Oct 10, 2012 · N108MF · Substantial damage
  > The pilot’s decision to continue visual flight rules flight into instrument meteorological conditions due to self-imposed pressure to complete the trip, which resulted in impact with trees and terrain.
- [NTSB CEN12IA518](https://openairdocs.org/ntsb/CEN12IA518.md): Bell 407 · San Antonio, TX · Incident · No injuries · Incident investigation · Final report · Aug 5, 2012 · N429PH · Minor damage
  > The pilot’s failure to maintain clearance from a tower guy wire during the approach to a helipad at night.
- [NTSB ERA12TA251](https://openairdocs.org/ntsb/ERA12TA251.md): Bell 407 · Delray Beach, FL · Accident · Minor injuries · Final report · Mar 23, 2012 · N31PB · Substantial damage
  > The pilot’s improper response to a simulated engine failure and the instructor’s delayed and improper remedial action.
- [NTSB WPR12GA106](https://openairdocs.org/ntsb/WPR12GA106.md): Bell 407 · Moran Junction, WY · Accident · 1 fatal · Final report · Feb 15, 2012 · N407HL · Substantial damage
  > The pilot’s failure to maintain yaw control while hovering at high density altitude, which resulted in a loss of tail rotor effectiveness.
- [NTSB CEN12IA096](https://openairdocs.org/ntsb/CEN12IA096.md): Bell Helicopter Textron Canada 407 · Gulf Of Mexico · Incident · No injuries · Incident investigation · Final report · Dec 1, 2011 · N435PH · No damage
  > The failure of the compressor section No. 2 bearing due to false brinnelling and fatigue.
- [NTSB WPR11LA056](https://openairdocs.org/ntsb/WPR11LA056.md): Bell 407 · Riverdale, UT · Accident · No injuries · Limited investigation · Final report · Nov 22, 2010 · N408UH · Substantial damage
  > The pilot's failure to maintain clearance from a highway marker sign while maneuvering.
- [NTSB ERA10IA459](https://openairdocs.org/ntsb/ERA10IA459.md): Bell Helicopter Textron Canada 407 · Marion, VA · Incident · No injuries · Incident investigation · Final report · Aug 31, 2010 · N516MT · No damage
  > The cardiac impairment of the pilot during a positioning flight.
- [NTSB OPS10IA132](https://openairdocs.org/ntsb/OPS10IA132.md): Boeing 737-7H4 · Houston, TX · Incident · No injuries · Incident investigation · Final report · Apr 28, 2010 · N242WN · 2 aircraft · No damage
  > The failure of the local controller to issue control instructions necessary to ensure positive control/standard separation of traffic operating within the Class B airspace.
- [NTSB CEN09CA604](https://openairdocs.org/ntsb/CEN09CA604.md): Bell 407 · Fort Worth, TX · Accident · No injuries · Data collection · Final report · Sep 23, 2009 · N6040Y · Substantial damage
  > Failure of the pilot to maintain control during landing.
- [NTSB CEN09CA203](https://openairdocs.org/ntsb/CEN09CA203.md): Bell 407 · Lancaster, TX · Accident · No injuries · Data collection · Final report · Feb 27, 2009 · N2592T · Substantial damage
  > The failure of the pilot to maintain adequate main rotor rpm and the failure of the CFI to provide appropriate instruction during the maneuver.
- [NTSB DEN08FA101](https://openairdocs.org/ntsb/DEN08FA101.md): Bell 407 · Huntsville, TX · Accident · 4 fatal · Field investigation · Final report · Jun 8, 2008 · N416PH · Destroyed
  > The pilot's failure to identify and arrest the helicopter's descent, which resulted in its impact with terrain. Contributing to the accident was the limited outside visual reference due to the dark night conditions.
- [NTSB DFW07IA184](https://openairdocs.org/ntsb/DFW07IA184.md): Bell 407 · Gulf of Mexico · Incident · Minor injuries · Incident investigation · Final report · Aug 16, 2007 · N433PH · No damage
  > Fatigue failure of the power turbine outer shaft for undetermined reasons.
- [NTSB FTW04FA097](https://openairdocs.org/ntsb/FTW04FA097.md): Bell 407 · Pyote, TX · Accident · 4 fatal · Field investigation · Final report · Mar 21, 2004 · N502MT · Destroyed
  > The pilot's inadvertent encounter with adverse weather, which resulted in the pilot failing to maintain terrain clearance. Contributing factors were the dark night conditions, the pilot's inadequate preflight preparation and planning, and the pressure to…

## 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 ('54585'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=54585

---
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.