# NTSB investigations, IA: Not determined, general

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 CEN23LA076](https://openairdocs.org/ntsb/CEN23LA076.md): Cessna 182M · Council Bluffs, IA · Accident · No injuries · Class 3 · Limited · Final report · Jan 5, 2023 · N71494 · Substantial damage
  > The partial loss of engine power for reasons that could not be determined.
- [NTSB CEN22LA354](https://openairdocs.org/ntsb/CEN22LA354.md): Air Tractor AT-301 · Lamoni, IA · Accident · No injuries · Class 3 · Limited · Final report · Aug 1, 2022 · N4326S · Destroyed
  > A loss of airplane performance for reasons that could not be determined.
- [NTSB CEN21LA329](https://openairdocs.org/ntsb/CEN21LA329.md): Grumman Acft ENG Cor-Schweizer G-164B · Amana, IA · Accident · No injuries · Class 3 · Limited · Final report · Jul 19, 2021 · N8422K · Substantial damage
  > The loss of engine power for reasons that could not be determined.
- [NTSB CEN20LA145](https://openairdocs.org/ntsb/CEN20LA145.md): Beech 35 · Sidney, IA · Accident · No injuries · Class 3 · Limited · Final report · Apr 10, 2020 · N1258Z · Substantial damage
  > A loss of engine power for reasons that could not be determined.
- [NTSB CEN19LA230](https://openairdocs.org/ntsb/CEN19LA230.md): Robinson R44 · Ida Grove, IA · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 21, 2019 · N459TA · Substantial damage
  > A total loss of engine power during an aerial application flight for undetermined reasons.
- [NTSB CEN18LA288](https://openairdocs.org/ntsb/CEN18LA288.md): Air Tractor AT 301 · Milford, IA · Accident · No injuries · Limited investigation · Final report · Jul 22, 2018 · N3169H · Substantial damage
  > The pilot's loss of airplane control during takeoff for reasons that could not be determined because no anomalies consistent with a flight control system malfunction were observed.
- [NTSB CEN17LA263](https://openairdocs.org/ntsb/CEN17LA263.md): Cirrus Design SR22 · Corydon, IA · Accident · Serious injuries · Limited investigation · Final report · Jul 9, 2017 · N929DE · Substantial damage
  > A total loss of engine power for reasons that could not be determined because postaccident examination of the engine and airframe did not reveal any anomalies that would have precluded normal operation.
- [NTSB GAA16CA393](https://openairdocs.org/ntsb/GAA16CA393.md): Cessna 188 · What Cheer, IA · Accident · No injuries · Data collection · Final report · Jul 25, 2016 · N9979G · Substantial damage
  > The loss of engine power for undetermined reasons due to the pilot not making the airplane or engine available for examination, which resulted in a forced landing and an impact with terrain.
- [NTSB CEN15LA412](https://openairdocs.org/ntsb/CEN15LA412.md): Guisinger Gary G Baby Belle · Stuart, IA · Accident · Minor injuries · Limited investigation · Final report · Sep 12, 2015 · N135PA · Substantial damage
  > The failure of the tail rotor driveshaft for reasons that could not be determined due to the mechanically and thermally deformed fracture surface.
- [NTSB CEN15LA377](https://openairdocs.org/ntsb/CEN15LA377.md): Grumman G 164B · Sac City, IA · Accident · No injuries · Limited investigation · Final report · Aug 12, 2015 · N311AL · Substantial damage
  > The loss of engine power for reasons that could not be determined based on the available information.
- [NTSB GAA15LA019](https://openairdocs.org/ntsb/GAA15LA019.md): Aeronca 7AC · Garrison, IA · Accident · No injuries · Limited investigation · Final report · Mar 9, 2015 · N83643 · Substantial damage
  > The malfunction of the right brake for reasons that could not be determined because postaccident examination revealed no anomalies that would have precluded normal operation.
- [NTSB CEN14LA305](https://openairdocs.org/ntsb/CEN14LA305.md): Bollinger Robert L BD 4 · Fairfield, IA · Accident · 1 fatal · Limited investigation · Final report · Jun 22, 2014 · N108BC · Destroyed
  > The pilot’s loss of airplane control due to the in-flight separation of the propeller blades for reasons that could not be determined based on the available evidence.
- [NTSB CEN13LA484](https://openairdocs.org/ntsb/CEN13LA484.md): Rockwell International S-2R · Larchwood, IA · Accident · No injuries · Limited investigation · Final report · Aug 12, 2013 · N5610X · Substantial damage
  > A complete loss of engine power during an agricultural application flight for reasons that could not be determined because postaccident examinations did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN13LA287](https://openairdocs.org/ntsb/CEN13LA287.md): Piper PA-28-161 · Oskaloosa, IA · Accident · Minor injuries · Limited investigation · Final report · May 18, 2013 · N47539 · Substantial damage
  > The loss of engine power for reasons that could not be determined because the engine examination did not reveal any malfunctions or failures that would have precluded normal operation.
- [NTSB CEN12LA167](https://openairdocs.org/ntsb/CEN12LA167.md): Crain Jac A BD-4 · Clarinda, IA · Accident · 1 fatal · Limited investigation · Final report · Feb 19, 2012 · N215BD · Destroyed
  > A loss of airplane control for reasons that could not be determined because postaccident examination of the airplane and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN11LA543](https://openairdocs.org/ntsb/CEN11LA543.md): Aero Commander S2R · Washington, IA · Accident · No injuries · Limited investigation · Final report · Aug 3, 2011 · N1735S · Substantial damage
  > The loss of engine power for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN09LA503](https://openairdocs.org/ntsb/CEN09LA503.md): Air Tractor AT401 · Waterloo, IA · Accident · No injuries · Limited investigation · Final report · Aug 4, 2009 · N60747 · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB CEN09CA455](https://openairdocs.org/ntsb/CEN09CA455.md): Forster SA-300 · Iowa City, IA · Accident · No injuries · Data collection · Final report · Jul 22, 2009 · N7BT · Substantial damage
  > the loss of engine power for undetermined reasons.
- [NTSB CEN09LA451](https://openairdocs.org/ntsb/CEN09LA451.md): Grumman Acft ENG Cor-Schweizer G-164B · Beaman, IA · Accident · No injuries · Limited investigation · Final report · Jul 10, 2009 · N6683K · Substantial damage
  > The loss of engine power during initial climb for undetermined reasons.
- [NTSB CEN09CA121](https://openairdocs.org/ntsb/CEN09CA121.md): Cessna 150M · Greene, IA · Accident · No injuries · Data collection · Final report · Dec 31, 2008 · N899CB · Substantial damage
  > A loss of engine power due to undetermined reasons. Contributing to the accident was the rough, snow-covered terrain.
- [NTSB CHI08CA242](https://openairdocs.org/ntsb/CHI08CA242.md): Schweizer G-164A · Jefferson, IA · Accident · No injuries · Data collection · Final report · Aug 8, 2008 · N73PB · Substantial damage
  > The loss of engine power for an undetermined reason and the unsuitable terrain encountered during the forced landing. The corn crop was a factor.
- [NTSB CHI08CA240](https://openairdocs.org/ntsb/CHI08CA240.md): Grumman-Schweizer G-164B · Salem, IA · Accident · No injuries · Data collection · Final report · Aug 7, 2008 · N48412 · Substantial damage
  > The loss of engine power for an undetermined reason. Contributing to the accident was the high grass encountered during the landing roll.

## 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" = 'IA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '05000000'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/05000000/cases?state=IA

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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.