# NTSB investigations: Bell UH-1H

A list on [Bell UH-1H](https://openairdocs.org/model/bell-uh-1h.md).

Matched to the registry by N-number and event date, newest first.

- [NTSB ERA26LA193](https://openairdocs.org/ntsb/ERA26LA193.md): Bell UH1 · Enterprise, AL · Accident · No injuries · Class 4 · Limited · Final report · Apr 4, 2026 · N75140 · Substantial damage
  > The in-flight separation of a turn lock fastener stud, which resulted in substantial damage to one tail rotor blade.
- [NTSB WPR24LA030](https://openairdocs.org/ntsb/WPR24LA030.md): Arrow Falcon Exporters UH-1H · Firebaugh, CA · Accident · No injuries · Class 3 · Limited · Final report · Nov 4, 2023 · N3053Q · Substantial damage
  > An on-ground fuel fire for reasons that could not be determined due to extensive thermal damage.
- [NTSB CEN23LA295](https://openairdocs.org/ntsb/CEN23LA295.md): Bell UH-1H · Woodlawn, IL · Accident · No injuries · Class 3 · Limited · Final report · Jul 11, 2023 · N900VF · Substantial damage
  > The separation of the tail boom from the fuselage for reasons that could not be determined.
- [NTSB CEN22FA317](https://openairdocs.org/ntsb/CEN22FA317.md): Bell UH-1H · Chapelle, NM · Accident · 4 fatal · Class 3 · Field · Final report · Jul 17, 2022 · N911SZ · Destroyed
  > The total loss of engine power due to the fatigue failure of the starter-generator input (zerol) gear which failed due to poor maintenance. Contributing to the accident was the unsuccessful autorotation complicated by the setting sun and high density altitude.
- [NTSB WPR22FA098](https://openairdocs.org/ntsb/WPR22FA098.md): Bell UH-1H · Coalinga, CA · Accident · 1 fatal · Class 3 · Field · Final report · Feb 17, 2022 · N72297 · Substantial damage
  > The pilot’s loss of situational awareness for reasons that could not be determined given the available evidence, which led to controlled flight into terrain. Contributing to the accident was the pilot’s decision to operate the helicopter while ill and…
- [NTSB WPR21LA236](https://openairdocs.org/ntsb/WPR21LA236.md): Bell UH-1H · Townsend, MT · Accident · No injuries · Class 4 · Limited · Final report · Jun 15, 2021 · N398M · Destroyed
  > The pilot’s failure to maintain helicopter control after an encounter with settling with power during approach at an altitude that was too low for recovery, which resulted in a hard landing.
- [NTSB WPR20LA280](https://openairdocs.org/ntsb/WPR20LA280.md): Arrow-Falcon Exporters UH-1H · Coalinga, CA · Accident · 1 fatal · Class 3 · Limited · Final report · Aug 19, 2020 · N711GH · Destroyed
  > The pilot’s inability to maintain control of the helicopter due to a hydraulic system failure for reasons that could not be fully determined due to the thermal destruction from the postimpact fire.
- [NTSB WPR20LA211](https://openairdocs.org/ntsb/WPR20LA211.md): Bell UH1H · Payson, AZ · Accident · 1 fatal · Class 3 · Limited · Final report · Jul 7, 2020 · N623PB · Destroyed
  > A flight control malfunction due to either a hydraulic hardover or a flight control stiffness event, which resulted in a loss of control.
- [NTSB WPR20LA130](https://openairdocs.org/ntsb/WPR20LA130.md): Bell UH 1H · Mesa, AZ · Accident · 1 fatal · Class 3 · Limited · Final report · Apr 24, 2020 · N3276T · Substantial damage
  > An in-flight separation of the tail rotor gearbox from the airframe due to fatigue failure of the gearbox attachment studs, resulting in a loss of directional control and subsequent ground impact. Contributing to the accident were 1) the improper application…
- [NTSB GAA19CA344](https://openairdocs.org/ntsb/GAA19CA344.md): Bell UH 1H · Bethel, AK · Accident · No injuries · Data collection · Final report · Jun 6, 2019 · N4085L · Substantial damage
  > The pilot's improper fuel planning, which resulted in fuel exhaustion and a total loss of engine power, and his improper landing flare during a forced autorotation, which resulted in a hard landing. Contributing to the accident were the inoperative fuel…
- [NTSB WPR18LA206](https://openairdocs.org/ntsb/WPR18LA206.md): Bell UH 1H · Oakdale, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 24, 2018 · N107CH · Substantial damage
  > The pilot's loss of control during a precautionary landing following an abnormal noise in-flight, the source of which could not be determined.
- [NTSB WPR18LA147](https://openairdocs.org/ntsb/WPR18LA147.md): Bell UH 1H · Olympia, WA · Accident · Serious injuries · Class 3 · Limited · Final report · May 25, 2018 · N111DR · Substantial damage
  > A loss of tail rotor thrust due to the improper installation of the tail rotor assembly by maintenance personnel resulted in the pilot’s inability to maintain control of the helicopter as he began transition into forward flight from a hover, which resulted in…
- [NTSB CEN18FA078](https://openairdocs.org/ntsb/CEN18FA078.md): Bell UH-1H · Raton, NM · Accident · 5 fatal · Field investigation · Final report · Jan 18, 2018 · N658H · Destroyed
  > The pilot's failure to maintain adequate altitude above mountainous terrain during cruise flight in dark night conditions, which resulted in controlled flight into terrain.
- [NTSB GAA18CA107](https://openairdocs.org/ntsb/GAA18CA107.md): Bell UH 1H · Van Nuys, CA · Accident · No injuries · Data collection · Final report · Jan 12, 2018 · N205KS · Substantial damage
  > The pilot’s failure to maintain clearance from a stationary helicopter during landing. Contributing to the accident was the ground crew’s failure to ensure that the helicopter would clear the stationary helicopter.
- [NTSB WPR17LA002](https://openairdocs.org/ntsb/WPR17LA002.md): Tamarack Helicopters UH-1H · Gila Bend, AZ · Accident · Minor injuries · Limited investigation · Final report · Oct 5, 2016 · N175SF · Substantial damage
  > The separation of the 90° tail rotor gearbox assembly as a result of fatigue to the tail rotor gearbox input quill assembly attachment studs due to the helicopter experiencing highly repetitive agricultural flight profiles for which it was not designed.
- [NTSB WPR16LA142](https://openairdocs.org/ntsb/WPR16LA142.md): Bell UH 1H · Mt. Adams, WA · Accident · No injuries · Limited investigation · Final report · Jul 17, 2016 · N790RJ · Substantial damage
  > The pilot’s failure to maintain yaw control as he slowed the helicopter during a landing approach, which resulted in the loss of helicopter control due to the loss of tail rotor effectiveness.
- [NTSB WPR15LA219](https://openairdocs.org/ntsb/WPR15LA219.md): Garlick UH1H · Walla Walla, WA · Accident · Minor injuries · Limited investigation · Final report · Jul 21, 2015 · N121PT · Destroyed
  > The helicopter’s reduction in aerodynamic lift while operating in variable wind conditions for reasons that could not be determined because postaccident examination did not reveal any evidence of preimpact mechanical malfunctions or failures that would have…
- [NTSB WPR15LA109](https://openairdocs.org/ntsb/WPR15LA109.md): Bell/Garlick UH 1H · Shelton, WA · Accident · No injuries · Limited investigation · Final report · Feb 19, 2015 · N166DR · Substantial damage
  > The fatigue failure of the engine-to-transmission driveshaft adapter attachment bolt due to the application of inadequate torque on the bolt during assembly.
- [NTSB CEN15TA035](https://openairdocs.org/ntsb/CEN15TA035.md): Bell UH1H · San Isidro, TX · Accident · No injuries · Final report · Oct 23, 2014 · N72595 · Substantial damage
  > The flight crew's failure to ensure that the sliding cabin door was properly secured before the flight.
- [NTSB CEN13FA415](https://openairdocs.org/ntsb/CEN13FA415.md): Bell UH-1H · Dove Creek, CO · Accident · 1 fatal · Field investigation · Final report · Jul 16, 2013 · N775AR · Substantial damage
  > Pilot-induced oscillations caused by the loss of hydraulic assist of the flight controls due to an excessive loss of hydraulic fluid during a critical phase of flight, which resulted in ground impact. Contributing to the accident was an inadequate analysis of…
- [NTSB WPR10TA318](https://openairdocs.org/ntsb/WPR10TA318.md): Bell UH-1H · Santa Barbara, CA · Accident · No injuries · Final report · Jun 24, 2010 · N205KS · Substantial damage
  > The failure of left tailboom upper attachment fitting as a result of fatigue.
- [NTSB LAX08LA230](https://openairdocs.org/ntsb/LAX08LA230.md): Bell UH-1H · Rock Springs, WY · Accident · Minor injuries · Limited investigation · Final report · Jul 15, 2008 · N3276T · Substantial damage
  > A total loss of engine power due to the failure of the No. 1 bearing for undetermined reasons.
- [NTSB SEA07TA202](https://openairdocs.org/ntsb/SEA07TA202.md): Bell UH-1H · Benchmark, MT · Accident · Minor injuries · Final report · Jul 16, 2007 · N667HP · Substantial damage
  > Dense smoke/haze which restricted the pilot's visibility and the pilot's failure to maintain aircraft control during the emergency descent resulting in impact with terrain.
- [NTSB DEN07LA024](https://openairdocs.org/ntsb/DEN07LA024.md): Bell UH-1H · Melrose, NM · Accident · Serious injuries · Limited investigation · Final report · Nov 13, 2006 · N24CF · Substantial damage
  > the in-flight failure and separation of both tail rotor blades. Contributing factors in this accident were the check pilot interferring with the controls and his failure to relinquish control to the pilot-in-command.
- [NTSB DFW05WA254](https://openairdocs.org/ntsb/DFW05WA254.md): Bell UH-1H · Pisa Flores, Mexico · Accident · 1 fatal · Foreign investigation · Sep 26, 2005 · N3140U · Destroyed
- [NTSB ATL05LA035](https://openairdocs.org/ntsb/ATL05LA035.md): Bell UH-1H · Rockford, AL · Accident · No injuries · Limited investigation · Final report · Dec 16, 2004 · N51AG · Substantial damage
  > The pilot's failure to maintain adequate obstacle clearance, which resulted in an in-flight collision with a tree.
- [NTSB ATL04TA142](https://openairdocs.org/ntsb/ATL04TA142.md): Bell UH-1H · Childs, FL · Accident · No injuries · Final report · Jul 1, 2004 · N128FC · Substantial damage
  > The vehicle driver's inadequate visual lookout and his failure to maintain clearance. A factor was the lack of company standards and operation procedures.
- [NTSB LAX04TA018](https://openairdocs.org/ntsb/LAX04TA018.md): Bell UH-1H · Sacramento, CA · Accident · No injuries · Final report · Oct 15, 2003 · N114FD · Substantial damage
  > The loss of engine power due to the fatigue failure of a planetary reduction gear.
- [NTSB LAX03LA160](https://openairdocs.org/ntsb/LAX03LA160.md): Bell UH-1H · Kahoolawe, HI · Accident · 1 fatal · Limited investigation · Final report · May 22, 2003 · N3280U · Destroyed
  > The pilot's failure to remove the external load cable before the repositioning flight, which resulted in the cable striking the tail rotor in cruise flight.
- [NTSB SEA02FA108](https://openairdocs.org/ntsb/SEA02FA108.md): Garlick UH-1H · Clark Fork, ID · Accident · 1 fatal · Field investigation · Final report · Jun 21, 2002 · N114DR · Substantial damage
  > A failure of unknown origin in the tail rotor drive assembly. Factors include mountainous terrain unsuitable for an emergency landing.
- [NTSB DEN01LA077](https://openairdocs.org/ntsb/DEN01LA077.md): Bell UH-1H · Zuni, NM · Accident · No injuries · Limited investigation · Final report · Mar 25, 2001 · N56CF · Substantial damage
  > a hard landing due to the pilot's failure to maintain aircraft control during autorotation/flare. A factor was the total loss of engine power due to mechanical failure.
- [NTSB SEA01LA046](https://openairdocs.org/ntsb/SEA01LA046.md): Western International UH-1H · Darby, MT · Accident · 1 fatal · Limited investigation · Final report · Feb 7, 2001 · N205GL · Substantial damage
  > Inflight loss of a tail rotor pitch change link-to-blade grip attach bolt, resulting partial loss of tail rotor control, and subsequent entanglement of the helicopter's external load cable with a tree during emergency descent. Factors included the pilot's…
- [NTSB MIA00GA264](https://openairdocs.org/ntsb/MIA00GA264.md): Bell UH-1H · Waynesville, NC · Accident · 2 fatal · Final report · Sep 7, 2000 · N525BM · Destroyed
  > An in-flight encounter with ground level fog due to the pilot's decision to continue VMC flight into instrument conditions, resulting in an in-flight collision with trees.
- [NTSB MIA00GA184](https://openairdocs.org/ntsb/MIA00GA184.md): Bell UH-1H · Fort Myers, FL · Accident · 1 fatal · Final report · Jun 4, 2000 · N127FC · Destroyed
  > the pilot's failure to maintain control of the helicopter for undetermined reasons. Factors in this accident were self-induced pressure and fatigue due to lack of sleep and rest.
- [NTSB NYC00FA136](https://openairdocs.org/ntsb/NYC00FA136.md): Bell UH-1H · Frenchville, PA · Accident · 1 fatal · Field investigation · Final report · May 16, 2000 · N52AG · Substantial damage
  > Foreign object damage to the compressor and turbine sections of the engine, which resulted in a loss of power.
- [NTSB MIA00TA070](https://openairdocs.org/ntsb/MIA00TA070.md): Bell UH-1H · Fort Myers, FL · Accident · Minor injuries · Final report · Jan 20, 2000 · N853M · Substantial damage
  > A total loss of engine power due to turbine wheel fracture resulting from fatigue for undetermined reasons that resulted in an autorotation to unsuitable terrain and hard touchdown and rollover.
- [NTSB DEN99LA160](https://openairdocs.org/ntsb/DEN99LA160.md): Bell UH-1H · Silverton, CO · Accident · Minor injuries · Limited investigation · Final report · Sep 6, 1999 · N4085L · Substantial damage
  > The total loss of engine power for undetermined reasons. A factor was the lack of suitable terrain for a forced landing.
- [NTSB LAX99LA108](https://openairdocs.org/ntsb/LAX99LA108.md): Bell UH-1H · Glenn, CA · Accident · 1 fatal · Limited investigation · Final report · Feb 21, 1999 · N6258Z · Destroyed
  > An inflight loss of control for undetermined reasons.
- [NTSB LAX99FA057](https://openairdocs.org/ntsb/LAX99FA057.md): Bell UH-1H · Quincy, CA · Accident · 1 fatal · Field investigation · Final report · Dec 23, 1998 · N4590 · Destroyed
  > An inaccurate exhaust gas temperature gauge, that allowed the engine to be run over-temperature unknowingly by the pilot, which resulted in the subsequent failure of the turbine sections. Also causal was the pilot's failure to maintain rotor RPM during the…
- [NTSB SEA99LA020](https://openairdocs.org/ntsb/SEA99LA020.md): Garlick UH-1H · Darrington, WA · Accident · Serious injuries · Limited investigation · Final report · Dec 14, 1998 · N94NW · Substantial damage
  > The total separation of the vertical fin (stabilizer), as the result of fatigue cracks which initiated in the fourth rivet hole above where the fin extends from the tailboom.
- [NTSB SEA98FA104](https://openairdocs.org/ntsb/SEA98FA104.md): Garlick UH-1H · Couer D'Alene, ID · Accident · No injuries · Field investigation · Final report · Jun 18, 1998 · N869W · Substantial damage
  > Fatigue failure of a reduction drive planetary gear. Factors include an unapproved part and plating process, and uneven terrain at the emergency landing site.
- [NTSB MIA98GA069](https://openairdocs.org/ntsb/MIA98GA069.md): Bell UH-1H · Savannah, TN · Accident · 4 fatal · Final report · Feb 3, 1998 · N30TV · Destroyed
  > failure of the flight crew to maintain sufficient altitude/clearance from the pole and workman. Related factors were: the gusty wind condition, inadequate communication/coordination between the flight crew and ground personnel, and an improper external system…
- [NTSB LAX97TA289](https://openairdocs.org/ntsb/LAX97TA289.md): Bell UH-1H · Tahoe City, CA · Accident · Minor injuries · Final report · Aug 15, 1997 · N205DF · Substantial damage
  > The pilot's decision to attempt a takeoff in environmental conditions which exceeded the helicopter's performance capability, and his improper use of the collective, which caused a decay of the main rotor rpm, the collision with the lake, and the subsequent…
- [NTSB FTW96LA380](https://openairdocs.org/ntsb/FTW96LA380.md): Bell UH-1H · Leadville, CO · Accident · Serious injuries · Limited investigation · Final report · Sep 10, 1996 · N23Y · Substantial damage
  > The pilot's improper inflight planning/decision in that he used an inadequate airspeed or an inadequate altitude, or both, for the intentional autorotation.
- [NTSB SEA96FA187](https://openairdocs.org/ntsb/SEA96FA187.md): Garlick UH-1H · Coeur D'Alene, ID · Accident · Serious injuries · Field investigation · Final report · Aug 12, 1996 · N97NW · Substantial damage
  > Fatigue fracture of the left forward vertical stabilizer spar, resulting in loss of the vertical stabilizer and tail rotor and subsequent loss of control. A factor was insufficient applicability (by make and model) of an existing FAA airworthiness directive…
- [NTSB LAX96TA298](https://openairdocs.org/ntsb/LAX96TA298.md): Bell UH-1H · Ukiah, CA · Accident · No injuries · Final report · Aug 7, 1996 · N499DF · Substantial damage
  > the commercial/student pilot's improper/abrupt use of aft cyclic during the flare, and the instructor's inadequate supervision of the flight.
- [NTSB SEA96FA076](https://openairdocs.org/ntsb/SEA96FA076.md): Bell UH-1H · Rainier, WA · Accident · No injuries · Field investigation · Final report · Apr 4, 1996 · N6166R · Substantial damage
  > failure of the forward power shaft (number 21) bearing. A factor relating to the accident was: the lack of suitable, unobstructed terrain for an emergency landing.
- [NTSB ATL95LA160](https://openairdocs.org/ntsb/ATL95LA160.md): Bell UH-1H · Montgomery, AL · Accident · No injuries · Limited investigation · Final report · Aug 7, 1995 · N794CF · Substantial damage
  > the pilot's failure to maintain clearance from the trees.
- [NTSB SEA92TL#03](https://openairdocs.org/ntsb/SEA92TL%2303.md): Bell 206L-3 · Kent, WA · Accident · No injuries · Class 3 · Final report · Oct 24, 1991 · N911KP · 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_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = a.case_mkey
WHERE a.aircraft_model_code IN ('1181407')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/model/bell-uh-1h/ntsb

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