# NTSB investigations: Lycoming VO-540 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 DEN08LA071](https://openairdocs.org/ntsb/DEN08LA071.md): Hiller UH-12E · La Porte, TX · Accident · Minor injuries · Limited investigation · Final report · Apr 4, 2008 · N40289 · Substantial damage
  > The loss of tail rotor effectiveness. Contributing factors were the sudden windshift to a tailwind, and the pilot initiating a hovering turn in ground effect.
- [NTSB DFW06CA013](https://openairdocs.org/ntsb/DFW06CA013.md): Hiller UH-12E · Pasadena, TX · Accident · Serious injuries · Data collection · Final report · Oct 23, 2005 · N909BC · Substantial damage
  > The pilot's inadequate fuel management, which resulted in fuel exhaustion and a loss of engine power. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW04LA198](https://openairdocs.org/ntsb/FTW04LA198.md): Bell 47-G2 · La Porte, TX · Accident · Serious injuries · Limited investigation · Final report · Aug 1, 2004 · N7892B · Destroyed
  > The loss of engine power for undetermined reasons.
- [NTSB FTW03CA146](https://openairdocs.org/ntsb/FTW03CA146.md): Bell 47G-4 · Robinson, TX · Accident · Minor injuries · Data collection · Final report · May 12, 2003 · N4205D · Substantial damage
  > The pilot's failure to maintain clearance with the ground while performing a quick stop maneuver which resulted in a dynamic rollover.
- [NTSB FTW96LA005](https://openairdocs.org/ntsb/FTW96LA005.md): Bell 47G-4A · Edinburg, TX · Accident · Minor injuries · Limited investigation · Final report · Oct 3, 1995 · N6SR · Substantial damage
  > the pilot's improper takeoff planning which resulted in the loss of conrol. A factor was the gusty crosswind condition.
- [NTSB FTW95LA105](https://openairdocs.org/ntsb/FTW95LA105.md): Bell 47G-4A · El Indio, TX · Accident · Minor injuries · Limited investigation · Final report · Feb 1, 1995 · N6SR · Destroyed
  > The loss of tail rotor effectiveness. A factor was the gusty right quartering tailwind.
- [NTSB FTW92LA007](https://openairdocs.org/ntsb/FTW92LA007.md): Hiller UH-12E · Palacios, TX · Accident · No injuries · Limited investigation · Final report · Oct 11, 1991 · N4029D · Substantial damage
  > The pilot's inadequate preflight.
- [NTSB FTW91LA064](https://openairdocs.org/ntsb/FTW91LA064.md): Bell 47G4 · Corpus Christi, TX · Accident · Minor injuries · Limited investigation · Final report · Apr 27, 1991 · N1195W · Destroyed
  > The initial restricted movement and eventual locking of the cyclic control as a result of the failure of the lateral servo. A factor was the installation of the failed component by an unqualified person.
- [NTSB FTW88DRA05](https://openairdocs.org/ntsb/FTW88DRA05.md): Hiller UH-12E · La Salle, TX · Accident · No injuries · Final report · Apr 4, 1988 · N4029D · Substantial damage
  > Acft was substantially damaged during an emergency autorotation following an engine failure while the acft was completing an aerial application maneuver. Acft touched down tail low and the main rotor blades flexed down and cut off the tail boom. Investigation…
- [NTSB FTW86LA167](https://openairdocs.org/ntsb/FTW86LA167.md): Hiller UH-12E · Norias, TX · Accident · No injuries · Limited investigation · Final report · Sep 13, 1986 · N40268 · Substantial damage
  > The commercial plt was engaged in a livestock round-up and attempted to hover over a wire fence. The acft skid caught on the fence causing a loss of acft control and subsequent impact with the terrain.
- [NTSB FTW82DRG16](https://openairdocs.org/ntsb/FTW82DRG16.md): Bell 47G-4A · Encinal, TX · Accident · No injuries · Closed · Dec 9, 1981 · N8573F · Substantial damage
- [NTSB FTW82DRG07](https://openairdocs.org/ntsb/FTW82DRG07.md): Bell 47G-4A · Telegraph, TX · Accident · No injuries · Closed · Nov 2, 1981 · N62446 · Substantial damage
- [NTSB FTW79FRG52](https://openairdocs.org/ntsb/FTW79FRG52.md): Bell 47G-4A · Alice, TX · Accident · No injuries · Closed · Aug 24, 1979 · N8573F · Substantial damage
- [NTSB FTW79FRA34](https://openairdocs.org/ntsb/FTW79FRA34.md): Bell 47G-4 · Manvel, TX · Accident · No injuries · Closed · Jun 29, 1979 · N1150W · Substantial damage
- [NTSB FTW79DRA20](https://openairdocs.org/ntsb/FTW79DRA20.md): Bell 47-G4 · Alvin, TX · Accident · No injuries · Closed · Apr 24, 1979 · N1150W · Minor damage
- [NTSB FTW79FQG05](https://openairdocs.org/ntsb/FTW79FQG05.md): Hiller UH-12E · Stratford, TX · Accident · No injuries · Closed · Oct 19, 1978 · N4026S · Substantial damage
- [NTSB FTW74FRG55](https://openairdocs.org/ntsb/FTW74FRG55.md): Bell 47G3B1 · Corpus Chrsti, TX · Accident · No injuries · Closed · Jan 25, 1974 · N11HV · Substantial damage
- [NTSB FTW73DQG40](https://openairdocs.org/ntsb/FTW73DQG40.md): Bell 47G-4A · Borger, TX · Accident · No injuries · Closed · May 25, 1973 · N4062G · Substantial damage
- [NTSB FTW68A0084](https://openairdocs.org/ntsb/FTW68A0084.md): Brantly 305 · Orange, TX · Accident · 1 fatal · Closed · Mar 30, 1968 · N2212U · Destroyed
- [NTSB FTW67A0056](https://openairdocs.org/ntsb/FTW67A0056.md): Hiller UH-12L · Woodville, TX · Accident · No injuries · Closed · Nov 19, 1966 · N9780C · Substantial damage
- [NTSB FTW66A0056](https://openairdocs.org/ntsb/FTW66A0056.md): Bell 47J-2 · Refugio, TX · Accident · No injuries · Closed · Dec 9, 1965 · N73902 · Substantial damage
- [NTSB UNK64X2221](https://openairdocs.org/ntsb/UNK64X2221.md): Bell 47J2 · Refugio, TX · Accident · No injuries · Closed · Jun 10, 1964 · N73902 · 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."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 ('41534', '41582'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41534&state=TX

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