# NTSB investigations: Allison 250-C20 series, TX

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 CEN24LA377](https://openairdocs.org/ntsb/CEN24LA377.md): Mcdonnell Douglas Helicopter 369E · Manvel, TX · Accident · No injuries · Class 4 · Limited · Final report · Sep 30, 2024 · N8372F · Substantial damage
  > The pilot’s improper recovery from a practice autorotation which resulted in a hard landing. Contributing to the accident was the instructor’s inadequate supervision of the pilot receiving instruction.
- [NTSB CEN23LA404](https://openairdocs.org/ntsb/CEN23LA404.md): Mcdonnell Douglas Helicopter 369E · Arcola, TX · Accident · No injuries · Class 4 · Limited · Final report · Sep 7, 2023 · N8372F · Substantial damage
  > The instructor’s failure to re-apply engine power during a power recovery after a practice autorotation which resulted in a hard landing.
- [NTSB CEN22FA086](https://openairdocs.org/ntsb/CEN22FA086.md): Bell 206B · Livingston, TX · Accident · 2 fatal · Class 3 · Field · Final report · Dec 30, 2021 · N8AU · Substantial damage
  > The pilot exceeding the yaw control capability of the helicopter for the flight conditions, resulting in a non-mechanical loss of tail rotor effectiveness.
- [NTSB CEN17FA100](https://openairdocs.org/ntsb/CEN17FA100.md): Bell 206B · Galveston, TX · Accident · 1 fatal · Field investigation · Final report · Feb 7, 2017 · N978RH · Destroyed
  > The pilot's failure to recognize the flight had encountered instrument meteorological conditions at night, which resulted in an unrecognized descent and collision with water.
- [NTSB CEN15LA423](https://openairdocs.org/ntsb/CEN15LA423.md): Bell 206B · Woodville, TX · Accident · Serious injuries · Limited investigation · Final report · Sep 24, 2015 · N648CA · Substantial damage
  > The loss of engine power due to water contamination in the fuel system. Contributing to the accident were the pilot’s inadequate preflight inspection of the fuel tanks and the operator’s inadequate inspection of the fuel supply truck that did not detect water…
- [NTSB CEN14LA296](https://openairdocs.org/ntsb/CEN14LA296.md): Bell 206B · Decatur, TX · Accident · Minor injuries · Limited investigation · Final report · Jun 17, 2014 · N536T · Substantial damage
  > The flight instructor’s improper recovery from a practice autorotation, which resulted in a hard landing.
- [NTSB DFW05CA172](https://openairdocs.org/ntsb/DFW05CA172.md): Garlick Helicopters OH-58A+ · Graham, TX · Accident · Serious injuries · Data collection · Final report · Jun 22, 2005 · N372NS · Substantial damage
  > The pilot's failure to maintain clearance with the wire while maneuvering during an aerial application flight. Low altitude flight is a contributing factor.
- [NTSB DFW05FA086](https://openairdocs.org/ntsb/DFW05FA086.md): Bell 206B-3 · Shelbyville, TX · Accident · 3 fatal · Field investigation · Final report · Mar 10, 2005 · N85BH · Substantial damage
  > The pilot's failure to maintain altitude and clearance for undetermined reasons.
- [NTSB DFW05TA056](https://openairdocs.org/ntsb/DFW05TA056.md): Schweizer 269D · San Antonio, TX · Accident · Minor injuries · Final report · Jan 18, 2005 · N296RL · Substantial damage
  > The inadequate supervision and delayed remedial action by the flight instructor, which resulted in an inadvertent dynamic rollover.
- [NTSB FTW04TA237](https://openairdocs.org/ntsb/FTW04TA237.md): Bell OH-58C · Beaumont, TX · Accident · 1 fatal · Final report · Sep 16, 2004 · N9273T · Destroyed
  > **This probable cause was modified on 2/22/2016. Please see the public docket for this accident for additional details.** The pilot's failure to maintain a safe altitude, resulting in collision with the water. A factor was the dark night.
- [NTSB FTW04GA076](https://openairdocs.org/ntsb/FTW04GA076.md): Schweizer 269D · San Antonio, TX · Accident · Minor injuries · Final report · Feb 19, 2004 · N255TP · Substantial damage
  > The loss of engine power due to the axial movement of the compressor rotor blades contacting the compressor vanes resulting in a subsequent compressor stall. A contributing factor was the improper assembly of the compressor section during the engine overhaul…
- [NTSB FTW04TA075](https://openairdocs.org/ntsb/FTW04TA075.md): Bell 206B · Decatur, TX · Accident · Minor injuries · Final report · Feb 18, 2004 · N16MV · Destroyed
  > The pilot's failure to maintain control of the helicopter during liftoff after encountering dynamic rollover. A contributing factor was the rough and uneven terrain.
- [NTSB FTW03LA197](https://openairdocs.org/ntsb/FTW03LA197.md): Bell 206B · Mason, TX · Accident · Minor injuries · Limited investigation · Final report · Aug 20, 2003 · N9877Z · Substantial damage
  > The pilot's failure to maintain clearance with the power line. A contributing factor was the sunglare.
- [NTSB LAX03LA183](https://openairdocs.org/ntsb/LAX03LA183.md): Bell 206B · Malone, TX · Accident · Minor injuries · Limited investigation · Final report · Jun 6, 2003 · N242TK · Substantial damage
  > a fuel starvation induced loss of engine power due to fuel contamination.
- [NTSB FTW03LA147](https://openairdocs.org/ntsb/FTW03LA147.md): Bell 206B · Hurst, TX · Accident · No injuries · Limited investigation · Final report · May 7, 2003 · N81519 · Substantial damage
  > The improper flare by the pilot receiving instruction, which resulted in the hard landing. A contributing factor was the flight instructor's inadequate supervision.
- [NTSB FTW03LA134](https://openairdocs.org/ntsb/FTW03LA134.md): Hughes 369HS · Conroe, TX · Accident · No injuries · Limited investigation · Final report · Apr 19, 2003 · N16Q · Substantial damage
  > The pilot's inability to control the helicopter after encountering loss of tail rotor effectiveness. A contributing factor was the unfavorable winds.
- [NTSB FTW03FA118](https://openairdocs.org/ntsb/FTW03FA118.md): Bell 407 · Broadus, TX · Accident · 2 fatal · Field investigation · Final report · Mar 27, 2003 · N175PA · Destroyed
  > The partial loss of engine power due to erratic fuel flow metering to the engine resulting from the single point failure of the PLA potentiometer in the hydro-mechanical fuel control unit. A contributing factor was the lack of suitable terrain to execute a…
- [NTSB FTW03LA080](https://openairdocs.org/ntsb/FTW03LA080.md): Bell 206B · Putnam, TX · Accident · Serious injuries · Limited investigation · Final report · Jan 9, 2003 · N115TV · Substantial damage
  > the pilot's failure to properly interpret and confirm a faulty tachometer instrument indication and his improper flare during the ensuing precautionary autorotation, which resulted in a hard landing. Also causal was the failure of the tachometer.
- [NTSB FTW02LA143](https://openairdocs.org/ntsb/FTW02LA143.md): Bell 206B · Rosenberg, TX · Accident · Serious injuries · Limited investigation · Final report · May 12, 2002 · N717NH · Substantial damage
  > The pilot's failure to maintain terrain clearance.
- [NTSB FTW02LA117](https://openairdocs.org/ntsb/FTW02LA117.md): Bell 206B · Walnut Hill, TX · Accident · Minor injuries · Limited investigation · Final report · Apr 11, 2002 · N513FD · Substantial damage
  > The loss of engine power as a result of the backing off of the PC air line "B" nut due to the improper installation by the company maintenance personnel. Contributing factors were the inadequate preflight by the pilot and the lack of suitable terrain for the…
- [NTSB FTW00FA091](https://openairdocs.org/ntsb/FTW00FA091.md): Eurocopter BO105S-CBS-5 · Dalhart, TX · Accident · 4 fatal · Field investigation · Final report · Mar 10, 2000 · N335T · Destroyed
  > The pilot's failure to maintain control of the helicopter as a result of his continued flight into known adverse weather conditions. Factors were the dark night light condition, fog, low ceiling, and the pilot's lack of total instrument flight time.
- [NTSB FTW99LA076](https://openairdocs.org/ntsb/FTW99LA076.md): Bell 206-B3 · Sabine Pass, TX · Accident · Minor injuries · Limited investigation · Final report · Feb 6, 1999 · N907CA · Substantial damage
  > The pilot's inadvertent flight into instrument meteorological conditions and subsequent spatial disorientation. Factors were the dark night conditions, the fog, and the pilot's failure to obtain a weather briefing prior to the flight.
- [NTSB FTW98LA235](https://openairdocs.org/ntsb/FTW98LA235.md): Bell 206BIII · Hurst, TX · Accident · No injuries · Limited investigation · Final report · May 21, 1998 · N206TA · Substantial damage
  > The pilot's delayed recovery from a simulated autorotative landing.
- [NTSB FTW96FA028](https://openairdocs.org/ntsb/FTW96FA028.md): Mbb BO-105S · League City, TX · Accident · 2 fatal · Field investigation · Final report · Oct 26, 1995 · N105AG · Destroyed
  > the pilot's failure to maintain aircraft control. Factors were the pilot's lack of total experience in the MBB BO-105 helicopter and the dark night light conditions.
- [NTSB FTW94LA061](https://openairdocs.org/ntsb/FTW94LA061.md): Hughes 369HS · Mason, TX · Accident · Serious injuries · Limited investigation · Final report · Jan 1, 1994 · N7092Q · Destroyed
  > Loss of aircraft control for an undetermined reason.
- [NTSB FTW93TA#03](https://openairdocs.org/ntsb/FTW93TA%2303.md): Bell 206B · Dallas, TX · Accident · No injuries · Final report · Mar 16, 1993 · N3211N · Substantial damage
- [NTSB FTW92GA080](https://openairdocs.org/ntsb/FTW92GA080.md): Bell 206B III · Falfurrias, TX · Accident · No injuries · Final report · Mar 3, 1992 · N3201R · Substantial damage
  > The pilot's failure to maintain directional control due to his ability to maintain an adequate visual lookout being restricted. Factors were the observer's delay in informing the pilot of the rearward drift and the dark night conditions.
- [NTSB FTW85LA315](https://openairdocs.org/ntsb/FTW85LA315.md): Bell 206B · Damon, TX · Accident · Minor injuries · Limited investigation · Final report · Aug 9, 1985 · N22952 · Destroyed
  > The plt experienced an eng deceleration to flt idle while cruising 1000 MSL. He autorotated into trees in a heavily wooded area. A subsequent eng disassembly and examination revealed the pwr control line, p/n 6848471-B, was broken at its attaching 'b' nut…
- [NTSB FTW84LA314](https://openairdocs.org/ntsb/FTW84LA314.md): Aerospatiale AS-355F · El Paso, TX · Accident · No injuries · Limited investigation · Final report · Jul 20, 1984 · N240US · Substantial damage
  > The helicopter encountered turbulence and downdrafts during landing. The acft impacted the asphalt ramp slightly nose low and bounced 2-3 ft into the air. The nose dipped more and full aft cyclic was applied. The main rotor blades hit the ground and the acft…

## 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."eventStateOrRegion" = 'TX' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03020'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03020&state=TX

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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.