# NTSB investigations: Rolls-Royce 250-C20B

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.

Page 1 of 2 · 73 cases

## Latest cases

- [NTSB CEN26LA264](https://openairdocs.org/ntsb/CEN26LA264.md): Bell 206B · Saint Joseph, IL · Accident · Serious injuries · Class 4 · Limited · Investigation open · Jul 17, 2026 · N297CA · Substantial damage
- [NTSB WPR26LA188](https://openairdocs.org/ntsb/WPR26LA188.md): Mcdonnell Douglas Helicopter 500 · Twin Falls, ID · Accident · Minor injuries · Class 4 · Limited · Final report · May 14, 2026 · N952SF · Substantial damage
  > The pilot’s failure to maintain control while hovering in gusty wind conditions, resulting in the helicopter rolling onto its side.
- [NTSB ERA26LA097](https://openairdocs.org/ntsb/ERA26LA097.md): Hughes 369 · North Augusta, SC · Accident · No injuries · Class 3 · Limited · Preliminary report · Jan 22, 2026 · N105AC · Substantial damage
  > On January 22, 2026, at 1600 eastern standard time, a Hughes 369D, N105AC, was substantially damaged when it was involved in an accident near North Augusta, South Carolina. The pilot was not injured. The helicopter was operated as a Title 14 Code of Federal…
- [NTSB ERA25LA338](https://openairdocs.org/ntsb/ERA25LA338.md): Bell 206 · Monroe, GA · Accident · Serious injuries · Class 3 · Limited · Preliminary report · Sep 10, 2025 · N992MR · Destroyed
  > On September 10, 2025, about 1100 eastern daylight time, a Bell 206, N992MR, was destroyed when it was involved in an accident near Monroe, Geogia. The flight instructor and student pilot were seriously injured. The helicopter was operated as a Title 14 Code…
- [NTSB CEN25LA292](https://openairdocs.org/ntsb/CEN25LA292.md): Bell 206B · North Bend, NE · Accident · No injuries · Class 4 · Limited · Final report · Jul 27, 2025 · N432TV · Substantial damage
  > The pilot’s failure to maintain clearance from wires while maneuvering at a low altitude, and the ground crew failure to inform the pilot that the support truck had been moved.
- [NTSB WPR25FA190](https://openairdocs.org/ntsb/WPR25FA190.md): MD Helicopters 369E · Meeker, CO · Accident · 1 fatal · Class 3 · Field · Preliminary report · Jun 25, 2025 · N411WJ · Substantial damage
  > On June 25, 2025, about 1001 mountain daylight time, an MD Helicopters 369E, N411WJ, was substantially damaged when it was involved in an accident near Meeker, Colorado. The pilot was fatally injured. The helicopter was operated as a Title 14 Code of Federal…
- [NTSB CEN24LA358](https://openairdocs.org/ntsb/CEN24LA358.md): Hughes 369 · Canton, MI · Accident · No injuries · Class 3 · Limited · Final report · Sep 11, 2024 · N8969F · Substantial damage
  > Fatigue cracking of the main rotor blade that occurred at an undetermined time.
- [NTSB CEN24LA276](https://openairdocs.org/ntsb/CEN24LA276.md): Bell 206 · Cornland, IL · Accident · No injuries · Class 4 · Limited · Final report · Jul 21, 2024 · N26UK · Substantial damage
  > The pilot was unable to see a wire due to the setting sun and the helicopter subsequently struck the wire.
- [NTSB WPR24LA243](https://openairdocs.org/ntsb/WPR24LA243.md): Mcdonnell Douglas Helicopter 369E · Cottonwood, AZ · Accident · No injuries · Class 3 · Limited · Final report · Jul 13, 2024 · N473E · Substantial damage
  > The pilot’s low-speed, high-power maneuvering in high density altitude and near maximum gross weight, which resulted in an uncommanded right yaw due to a loss of tail rotor effectiveness and a subsequent hard landing.
- [NTSB ANC24LA017](https://openairdocs.org/ntsb/ANC24LA017.md): MD Helicopter 369E/500E · Kekaha, HI · Accident · Serious injuries · Class 3 · Limited · Final report · Feb 27, 2024 · N633JH · Substantial damage
  > Maintenance personnel’s noncompliance with maintenance manual procedures that required the removal of the overrunning clutch output bearing during the regreasing procedure, which resulted in inadequate regreasing of the bearing and the subsequent failure of…
- [NTSB ANC24LA016](https://openairdocs.org/ntsb/ANC24LA016.md): Hughes 369D · Hana, HI · Accident · No injuries · Class 4 · Limited · Final report · Feb 20, 2024 · N690WA · Substantial damage
  > The pilot’s failure to ensure the passenger’s gear was properly secured before departure.
- [NTSB ERA23LA326](https://openairdocs.org/ntsb/ERA23LA326.md): Hughes 369 · Elberon, VA · Accident · Serious injuries · Class 4 · Limited · Final report · Aug 5, 2023 · N353AH · Substantial damage
  > The pilot’s failure to maintain clearance from a power line structure arm, which resulted in main rotor blade contact.
- [NTSB CEN23LA342](https://openairdocs.org/ntsb/CEN23LA342.md): Bell 206B · Denison, IA · Accident · 1 fatal · Class 4 · Limited · Final report · Jul 30, 2023 · N231RL · Substantial damage
  > The pilot’s inflight distraction, which resulted in his failure to see and avoid wires.
- [NTSB CEN23LA308](https://openairdocs.org/ntsb/CEN23LA308.md): Hughes 369D · Atchison, KS · Accident · No injuries · Class 4 · Limited · Final report · Jul 13, 2023 · N533DR · Substantial damage
  > The pilot’s failure to adequately survey a field for obstructions prior to a low-level aerial application pass, which resulted in an impact with a powerline.
- [NTSB ERA23LA295](https://openairdocs.org/ntsb/ERA23LA295.md): Bell Helicopter Textron 206B · Sandersville, GA · Accident · No injuries · Class 4 · Limited · Final report · Jun 25, 2023 · N919AC · Substantial damage
  > The pilot’s failure to maintain clearance of trees during landing, which resulted in a tail rotor contact with tree limbs and a subsequent loss of control.
- [NTSB WPR23LA063](https://openairdocs.org/ntsb/WPR23LA063.md): Hughes 369D · La Sal, UT · Accident · No injuries · Class 4 · Limited · Final report · Dec 8, 2022 · N458HW · Substantial damage
  > The pilot’s failure to maintain clearance from terrain during a toe-in landing to sloping terrain which resulted in a loss of helicopter control.
- [NTSB ERA22LA192](https://openairdocs.org/ntsb/ERA22LA192.md): Bell Helicopter Textron 206B · Cedar Key, FL · Accident · No injuries · Class 4 · Limited · Final report · Apr 18, 2022 · N919AC · Substantial damage
  > The pilot’s improper fuel planning during agricultural spraying operations, which resulted in fuel starvation, a loss of engine power, and a hard landing following an autorotation.
- [NTSB WPR22LA078](https://openairdocs.org/ntsb/WPR22LA078.md): Hughes 369D · Strawberry, AZ · Accident · No injuries · Class 4 · Limited · Final report · Dec 21, 2021 · N111AD · Substantial damage
  > The pilot’s failure to maintain clearance from a static wire during approach.
- [NTSB WPR21LA354](https://openairdocs.org/ntsb/WPR21LA354.md): Hiller UH-12E · Bovill, ID · Accident · No injuries · Class 3 · Limited · Final report · Sep 23, 2021 · N5334V · Substantial damage
  > A loss of helicopter control for undetermined reasons based on the available evidence for this accident.
- [NTSB ANC21LA083](https://openairdocs.org/ntsb/ANC21LA083.md): Mcdonnell Douglas Helicopter 369E · Delta Junction, AK · Accident · Minor injuries · Class 4 · Limited · Final report · Sep 7, 2021 · N125KW · Substantial damage
  > The pilot’s inability to maintain lateral control during the takeoff, which resulted in dynamic rollover. Contributing to the accident was the pilot’s decision to utilize an unsuitable landing area for flight operations.
- [NTSB ANC21LA003](https://openairdocs.org/ntsb/ANC21LA003.md): Hughes 369 · Honolulu, HI · Accident · No injuries · Class 3 · Limited · Final report · Oct 27, 2020 · N58251 · Substantial damage
  > A partial loss of engine power due to an obstructed fuel line as a result of the separation of the circlip from the pin used on the fuel start pump. The reason for the circlip separation could not be determined based on the available evidence.
- [NTSB CEN20CA334](https://openairdocs.org/ntsb/CEN20CA334.md): Hughes 369 · Delia, KS · Accident · No injuries · Class 4 · Data collection · Final report · Aug 5, 2020 · N104SU · Substantial damage
  > Foreign object damage sustained to the main rotor blades due to aerial tree trimming.
- [NTSB CEN20LA167](https://openairdocs.org/ntsb/CEN20LA167.md): MD Helicopter 369 · Houston, TX · Accident · 1 fatal · Class 3 · Limited · Final report · May 2, 2020 · N8375F · Substantial damage
  > An uncommanded right yaw that occurred for reasons that could not be determined based on the available evidence, which resulted in a loss control.
- [NTSB CEN19LA207](https://openairdocs.org/ntsb/CEN19LA207.md): Md Helicopter 369 · Houston, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 5, 2019 · N5277F · Substantial damage
  > The loss of control upon landing for undetermined reasons.
- [NTSB GAA19CA278](https://openairdocs.org/ntsb/GAA19CA278.md): Bell 206 · Pittsfield, IL · Accident · Minor injuries · Data collection · Final report · May 23, 2019 · N158H · Substantial damage
  > The pilot's failure to maintain clearance from rising terrain during agricultural application operations.
- [NTSB WPR19LA122](https://openairdocs.org/ntsb/WPR19LA122.md): Bell 206 · Oakridge, OR · Accident · No injuries · Class 3 · Limited · Final report · Apr 26, 2019 · N206JH · Substantial damage
  > A total loss of engine power following the failure of a 3rd stage turbine blade due to low- and high-cycle fatigue.
- [NTSB WPR19FA109](https://openairdocs.org/ntsb/WPR19FA109.md): Bell 206 · Fort McDowell, AZ · Accident · 2 fatal · Class 3 · Field · Final report · Apr 16, 2019 · N61PH · Destroyed
  > The separation of the main rotor head from the mast as a result of a sudden displacement of the cyclic stick during a low-G maneuver, leading to mast bumping. Contributing to the accident were the unsecure positioning of the flight test engineer’s laptop…
- [NTSB ERA19FA118](https://openairdocs.org/ntsb/ERA19FA118.md): Hughes 369 · Talking Rock, GA · Accident · 1 fatal · Class 3 · Field · Final report · Mar 5, 2019 · N89ZC · Substantial damage
  > A fatigue failure of the overrunning clutch subassembly due to abnormal bending loads due to cracks on the center engine mount, which resulted in an inflight loss of power. Contributing to the accident was the helicopter's low altitude and airspeed when the…
- [NTSB GAA18CA506](https://openairdocs.org/ntsb/GAA18CA506.md): Hughes 369 · Ridgeway, PA · Accident · No injuries · Data collection · Final report · Aug 22, 2018 · N89ZC · Substantial damage
  > The pilot's failure to maintain clearance from power lines during an aerial observation flight.
- [NTSB WPR18LA221](https://openairdocs.org/ntsb/WPR18LA221.md): Hughes 369 · Honolulu, HI · Accident · No injuries · Class 2 · Limited · Final report · Aug 8, 2018 · N369MH · Substantial damage
  > The operator's improper installation of the tail rotor (TR) teeter bearings, which resulted in cascading in-flight failures of the TR components and attach hardware.
- [NTSB WPR18FA188](https://openairdocs.org/ntsb/WPR18FA188.md): Hughes 369 · Majuro · Accident · 2 fatal · Field investigation · Final report · Jul 4, 2018 · N8648F · Destroyed
  > The pilot's failure to maintain clearance above the surface of the ocean.
- [NTSB CEN18FA182](https://openairdocs.org/ntsb/CEN18FA182.md): MD Helicopter 369D · Luling, LA · Accident · 1 fatal · Field investigation · Final report · May 20, 2018 · N362JS · Destroyed
  > The pilot's failure to maintain clearance from the powerline structure while hovering, which resulted in an inadvertent collision with the structure and an uncontrolled descent into terrain.
- [NTSB GAA18CA249](https://openairdocs.org/ntsb/GAA18CA249.md): Hughes 369 · Newark, OH · Accident · No injuries · Data collection · Final report · Apr 29, 2018 · N175JL · Substantial damage
  > The pilot’s failure to maintain adequate clearance from transmission power wires, which resulted in a tail rotor strike.
- [NTSB CEN18LA121](https://openairdocs.org/ntsb/CEN18LA121.md): Hughes 369D · Blair, WI · Accident · Serious injuries · Limited investigation · Final report · Mar 7, 2018 · N499SL · No damage
  > The pilot’s failure to recognize and compensate for hazards during the external load operation, which led to a collision between a lineman (external load) and a powerline.
- [NTSB WPR17LA113](https://openairdocs.org/ntsb/WPR17LA113.md): Bell 206B · Rockville, ID · Accident · Serious injuries · Limited investigation · Final report · May 26, 2017 · N24FS · Substantial damage
  > The in-flight failure of the engine-to-transmission drive shaft due to a fatigue fracture of one of the KAflex flex frames caused by a loose bolt, which resulted in a total loss of engine power and a subsequent hard landing.
- [NTSB WPR17LA071](https://openairdocs.org/ntsb/WPR17LA071.md): Bell 206B · Firebaugh, CA · Accident · No injuries · Limited investigation · Final report · Mar 1, 2017 · N211CS · Substantial damage
  > A total loss of engine power due to fuel exhaustion. Contributing to the accident was the improper calibration of the fuel quantity gauge, which led the pilot to believe that there was adequate fuel onboard.
- [NTSB GAA16CA480](https://openairdocs.org/ntsb/GAA16CA480.md): Hughes 369 · Peach Orchard, MO · Accident · No injuries · Data collection · Final report · Sep 9, 2016 · N500TN · Substantial damage
  > The helicopter pilot’s failure to maintain sufficient separation between the main rotor blade and a power line during line guard installation, which resulted in an electrical arc to the main rotor.
- [NTSB GAA16CA405](https://openairdocs.org/ntsb/GAA16CA405.md): Bell 206 · Outlook, WA · Accident · Minor injuries · Data collection · Final report · Jul 29, 2016 · N1087N · Destroyed
  > The pilot and ground crew's failure to visually inspect the helicopter's skids before takeoff, which resulted in a water hose becoming entangled on the right skid, a loss of control, an impact with terrain, and a post-crash fire.
- [NTSB GAA16CA168](https://openairdocs.org/ntsb/GAA16CA168.md): Hughes 369 · Jamestown, ND · Accident · No injuries · Data collection · Final report · Mar 26, 2016 · N721RP · Substantial damage
  > The pilot's excessive descent rate while flaring during a practice autorotation with a power recovery, which resulted in an impact with terrain.
- [NTSB WPR16LA021](https://openairdocs.org/ntsb/WPR16LA021.md): MD Helicopter 369D · Sedro-Woolley, WA · Accident · No injuries · Limited investigation · Final report · Nov 3, 2015 · N510PA · Substantial damage
  > The loss of engine power due to fuel starvation as a result of naphthenate fuel contamination, which blocked the fuel flow through the start pump.
- [NTSB WPR16LA020](https://openairdocs.org/ntsb/WPR16LA020.md): Bell 206B · Dallas, OR · Accident · Minor injuries · Limited investigation · Final report · Nov 2, 2015 · N22743 · Substantial damage
  > A loss of engine power for reasons that could not be determined based on the available information.
- [NTSB CEN14LA398](https://openairdocs.org/ntsb/CEN14LA398.md): Hughes 369D · West Liberty, OH · Accident · Serious injuries · Limited investigation · Final report · Jul 29, 2014 · N89ZC · Substantial damage
  > A total loss of engine power, which resulted from fuel exhaustion due to the pilot’s failure to adequately monitor the fuel quantity during the flight.
- [NTSB CEN14LA390](https://openairdocs.org/ntsb/CEN14LA390.md): Bell 206B · Bennet, NE · Accident · No injuries · Limited investigation · Final report · Jul 26, 2014 · N240SJ · Substantial damage
  > A total loss of engine power due to fuel contamination, which resulted from the pilot’s inadequate preflight inspection. Contributing to the accident was the operator’s failure to properly maintain the fuel storage tank.
- [NTSB WPR14CA319](https://openairdocs.org/ntsb/WPR14CA319.md): Bell 206B · Salinas, CA · Accident · No injuries · Data collection · Final report · Jul 19, 2014 · N291SH · Substantial damage
  > The pilot's failure to ensure adequate clearance from ground obstacles during takeoff which resulted in loss of aircraft control.
- [NTSB ANC13LA074](https://openairdocs.org/ntsb/ANC13LA074.md): Hughes 500D · Delta Junction, AK · Accident · No injuries · Class 3 · Limited · Final report · Aug 6, 2013 · N134SH · Substantial damage
  > A total loss of engine power for undetermined reasons, which necessitated an emergency hovering autorotation, during which the helicopter impacted trees and terrain.
- [NTSB CEN13WA329](https://openairdocs.org/ntsb/CEN13WA329.md): Bell 206B · San Luis Potosí, Mexico · Accident · 4 fatal · Foreign investigation · Jun 7, 2013 · N207JA · Substantial damage
- [NTSB CEN13LA378](https://openairdocs.org/ntsb/CEN13LA378.md): Bell 206B · St Louis, MO · Accident · No injuries · Limited investigation · Final report · May 24, 2013 · N297CA · Substantial damage
  > The loss of engine power due to the separation of compressor blades, which resulted from fatigue cracking.
- [NTSB WPR13CA204](https://openairdocs.org/ntsb/WPR13CA204.md): Bell 206B · Wells, NV · Accident · No injuries · Data collection · Final report · Apr 20, 2013 · N4237M · Substantial damage
  > The pilot's failure to maintain clearance from an obstacle while maneuvering at a low altitude.
- [NTSB CEN13LA158](https://openairdocs.org/ntsb/CEN13LA158.md): Bell 206B III · Ponderosa, NM · Accident · No injuries · Limited investigation · Final report · Feb 11, 2013 · N360AW · Substantial damage
  > A total loss of engine power for reasons that could not be determined because the postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB WPR13FA080](https://openairdocs.org/ntsb/WPR13FA080.md): Bell 206 · Delano, CA · Accident · 1 fatal · Field investigation · Final report · Jan 2, 2013 · N828AC · Destroyed
  > The pilot's failure to maintain helicopter control due to spatial disorientation while maneuvering in low visibility, dark night conditions.

Next page: https://openairdocs.org/ntsb.md?engine=54385&page=2

## 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 ('54385'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=54385

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