# NTSB investigations, WA: Unknown or undetermined

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 WPR27FA001](https://openairdocs.org/ntsb/WPR27FA001.md): Roesler Scott D Roesler Glasair · Everett, WA · Accident · 1 fatal · Class 3 · Field · Investigation open · Oct 1, 2026 · N314SR
- [NTSB WPR26LA205](https://openairdocs.org/ntsb/WPR26LA205.md): Cessna 208B · Shelton, WA · Accident · Serious injuries · Class 4 · Limited · Investigation open · May 29, 2026 · N661WA · Substantial damage
- [NTSB WPR24FA200](https://openairdocs.org/ntsb/WPR24FA200.md): Robinson Helicopter R44 II · Bluestem, WA · Accident · 2 fatal · Class 3 · Field · Final report · Jun 19, 2024 · N323TT · Destroyed
  > The pilot’s failure to manage main rotor rpm during an autorotation, which resulted in a loss of helicopter control. Contributing to the accident was a loss of power for reasons that could not be determined.
- [NTSB WPR23FA143](https://openairdocs.org/ntsb/WPR23FA143.md): Cessna T182T · Queets, WA · Accident · 1 fatal · Class 3 · Field · Final report · Mar 7, 2023 · N24289 · Destroyed
  > The pilot’s failure to maintain clearance from terrain for undetermined reasons.
- [NTSB WPR22LA202](https://openairdocs.org/ntsb/WPR22LA202.md): Fischer Super Koala · Chelan, WA · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 5, 2022 · UNREG · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB WPR20LA028](https://openairdocs.org/ntsb/WPR20LA028.md): Cessna 182 · Metaline, WA · Accident · 1 fatal · Class 3 · Limited · Final report · Nov 11, 2019 · N8749T · Destroyed
  > Impact with a lake for reasons that could not be determined.
- [NTSB WPR20LA014](https://openairdocs.org/ntsb/WPR20LA014.md): Vans RV 6 · Spanaway, WA · Accident · Serious injuries · Class 3 · Limited · Final report · Oct 23, 2019 · N615RJ · Substantial damage
  > A total loss of engine power during the initial climb for reasons that could not be determined.
- [NTSB WPR19LA202](https://openairdocs.org/ntsb/WPR19LA202.md): Cessna 172 · Port Townsend, WA · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 21, 2019 · N3863L · Substantial damage
  > The loss of engine power for reasons that could not be determined based on available information.
- [NTSB WPR19LA168](https://openairdocs.org/ntsb/WPR19LA168.md): Sikorsky UH19 · Brewster, WA · Accident · Minor injuries · Class 3 · Limited · Final report · May 29, 2019 · N955TC · Substantial damage
  > A reported mechanical malfunction and a hard landing for reasons that could not be determined based on available evidence.
- [NTSB WPR16LA003](https://openairdocs.org/ntsb/WPR16LA003.md): Cessna TU206G · Fall City, WA · Accident · Serious injuries · Limited investigation · Final report · Oct 3, 2015 · N206HL · Substantial damage
  > The airplane’s collision with the ground short of the runway for reasons that could not be determined based on the available evidence.
- [NTSB WPR12LA383](https://openairdocs.org/ntsb/WPR12LA383.md): Cessna 177RG · Olympia, WA · Accident · No injuries · Limited investigation · Final report · Aug 31, 2012 · N300ZX · Substantial damage
  > A loss of directional control during landing for reasons that could not be determined because postaccident examination of the nose gear steering mechanism did not reveal any anomalies that would have precluded normal operation.
- [NTSB WPR12FAMS1](https://openairdocs.org/ntsb/WPR12FAMS1.md): Jeffko Glasair · Tonasket, WA · Accident · 1 fatal · Missing aircraft · Final report · Jul 23, 2012 · N743CA · Substantial damage
  > The cause of the accident is undetermined as the airplane has not been located and remains missing.
- [NTSB WPR12LA160](https://openairdocs.org/ntsb/WPR12LA160.md): Cessna 150H · Kent, WA · Accident · Serious injuries · Limited investigation · Final report · Apr 7, 2012 · N6616S · Substantial damage
  > The pilot’s failure to maintain airplane control while maneuvering in the traffic pattern, which resulted in a collision with trees.
- [NTSB WPR09CA474](https://openairdocs.org/ntsb/WPR09CA474.md): Cessna T182T · Granite Falls, WA · Accident · No injuries · Data collection · Final report · Sep 29, 2009 · N2183P · Substantial damage
  > Landing in rugged terrain for undetermined reasons.

## 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" = 'WA' 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" = '000' 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/000/sequence?state=WA

---
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.