# NTSB investigations: AiResearch TPE331 series, AR

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 CEN21LA296](https://openairdocs.org/ntsb/CEN21LA296.md): Grumman Acft ENG Cor-Schweizer G-164B · Hoxie, AR · Accident · No injuries · Class 4 · Limited · Final report · Jun 29, 2021 · N6611K · Substantial damage
  > The pilot’s failure to ensure an adequate fuel supply for the intended flight.
- [NTSB CEN21LA287](https://openairdocs.org/ntsb/CEN21LA287.md): Grumman G164 · Sedgwick, AR · Accident · No injuries · Class 3 · Limited · Final report · Jun 20, 2021 · N62375 · Substantial damage
  > The total loss of engine power due to the failure and disengagement of the torque sensor assembly front spur gear from its splined shouldered shaft due to a loose self-locking nut.
- [NTSB CEN11CA608](https://openairdocs.org/ntsb/CEN11CA608.md): Ayres S2R-G10 · Hot Springs, AR · Accident · Minor injuries · Data collection · Final report · Aug 5, 2011 · N22592 · Substantial damage
  > The pilot's improper decision not to fully jettison the entire load of water when he realized the airplane was not climbing after takeoff.
- [NTSB DEN08LA107](https://openairdocs.org/ntsb/DEN08LA107.md): Ayres S2R-G6 · Pine Bluff, AR · Accident · No injuries · Limited investigation · Final report · Jun 20, 2008 · N61374 · Substantial damage
  > A total loss of engine power due to fuel starvation as a result of an electrical short in the wiring to the manual fuel switch that closed the fuel valves.
- [NTSB DFW05CA133](https://openairdocs.org/ntsb/DFW05CA133.md): Grumman 164-B · Fontaine, AR · Accident · No injuries · Data collection · Final report · May 24, 2005 · N3629K · Substantial damage
  > The pilot's failure to maintain clearance during a downwind takeoff with a full load of fertilizer. Factor contributing to the accident were the prevailing tailwind and the high density altitude.
- [NTSB FTW03LA159](https://openairdocs.org/ntsb/FTW03LA159.md): Ayres S2R-G6 · Palestine, AR · Accident · No injuries · Limited investigation · Final report · May 25, 2003 · N6136Z · Substantial damage
  > The shearing of the torsion shaft which resulted in a loss of engine power. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW97LA170](https://openairdocs.org/ntsb/FTW97LA170.md): Ayres S2R-G6 · El Dorado, AR · Accident · No injuries · Limited investigation · Final report · Apr 29, 1997 · N31575 · Substantial damage
  > The pilot misjudging his altitude above the airport, resulting in not attaining the proper touchdown point. A factor was the separation of teeth from the aft gear of the spur gear assembly, which resulted in the interruption of fuel.
- [NTSB FTW93LA220](https://openairdocs.org/ntsb/FTW93LA220.md): Rockwell S-2R · Elaine, AR · Accident · No injuries · Limited investigation · Final report · Jul 30, 1993 · N8842Q · Substantial damage
  > The pilot's failure to maintain clearance of water spraying and the resultant power loss. A factor was unsuitable terrain for the forced landing.
- [NTSB MKC89LA081](https://openairdocs.org/ntsb/MKC89LA081.md): Rockwell S2R T34 · Heth, AR · Accident · No injuries · Limited investigation · Final report · Mar 17, 1989 · N4968X · Substantial damage
  > Aircraft control not maintained by the pilot in command due to landing in a tailwind of excessive velocity which the pilot misjudged or failed to recognize.
- [NTSB FTW80DPG16](https://openairdocs.org/ntsb/FTW80DPG16.md): Grumman G-164B · Marked Tree, AR · Accident · No injuries · Closed · Mar 11, 1980 · N6611K · 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" = 'AR' 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 ('01514', '01517'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=01514&state=AR

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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.