# NTSB investigations, WI: Flight control sys malf/fail

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 CEN19LA224](https://openairdocs.org/ntsb/CEN19LA224.md): Piper PA18 · Osceola, WI · Accident · No injuries · Class 3 · Limited · Final report · Jul 14, 2019 · N6983B · Substantial damage
  > The failure of the right horizontal stabilizer during takeoff, resulting in a loss of control and forced landing. Contributing to the accident was the installation of an unapproved stabilizer frame and failure of maintenance personnel to identify…
- [NTSB CEN17LA344](https://openairdocs.org/ntsb/CEN17LA344.md): Aviat A 1B · Prairie du Chien, WI · Accident · No injuries · Limited investigation · Final report · Sep 9, 2017 · N299CA · Substantial damage
  > The fatigue failure of the aileron hinge bracket tubing for reasons that could not be determined based on the available evidence.
- [NTSB CEN17LA224](https://openairdocs.org/ntsb/CEN17LA224.md): Mckenna SD-1A · Juneau, WI · Accident · No injuries · Limited investigation · Final report · Jun 7, 2017 · N31313 · Substantial damage
  > The pilot’s difficulty controlling the airplane due to his incorrect reinstallation of the wings, which led to a bounced precautionary landing. Contributing to the accident was the failure of the pilot and the mechanic to verify the wings’ angle of incidence.
- [NTSB GAA16CA476](https://openairdocs.org/ntsb/GAA16CA476.md): Luscombe 8 · Juneau, WI · Accident · No injuries · Data collection · Final report · Sep 10, 2016 · N1263K · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll in gusting crosswind conditions, which resulted in a runway excursion. Contributing to the accident was the foot pad cover slipping off the right rudder pedal during the landing roll.
- [NTSB CEN09CA522](https://openairdocs.org/ntsb/CEN09CA522.md): Grumman Acft ENG Cor-Schweizer G-164A · Evansville, WI · Accident · No injuries · Data collection · Final report · Aug 12, 2009 · N9794 · Substantial damage
  > A jam of the elevator flight control for undetermined reasons.
- [NTSB CEN09LA486](https://openairdocs.org/ntsb/CEN09LA486.md): Gallagher Junior ACE · Oshkosh, WI · Accident · No injuries · Limited investigation · Final report · Aug 2, 2009 · N413G · Substantial damage
  > The failure of a weld joint on the right rudder pedal leading to the loss of directional control during landing.
- [NTSB CHI08LA190](https://openairdocs.org/ntsb/CHI08LA190.md): de Havilland DHC-6-200 · Baldwin, WI · Accident · No injuries · Limited investigation · Final report · Jun 29, 2008 · N203SF · Substantial damage
  > Undetermined.

## 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" = 'WI' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '333' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/333/sequence?state=WI

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