# NTSB investigations, WA: Vortex turbulence encountered

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 SEA07IA019](https://openairdocs.org/ntsb/SEA07IA019.md): Cessna 172 · Seattle, WA · Incident · No injuries · Incident investigation · Final report · Nov 16, 2006 · N9522S · No damage
  > The instructor pilot's improper in-flight decision not to take evasive action as a heavy aircraft passed by while on an upwind parallel approach path to an adjacent runway, leading to a wake vortices encounter. Factors include a nearly direct crosswind…
- [NTSB SEA01LA135](https://openairdocs.org/ntsb/SEA01LA135.md): Piper PA-28-180 · Oak Harbor, WA · Accident · No injuries · Limited investigation · Final report · Jul 19, 2001 · N4231T · Substantial damage
  > The pilot's inadequate remedial action while on final approach. The encounter with wake turbulence was a factor.
- [NTSB SEA00LA067](https://openairdocs.org/ntsb/SEA00LA067.md): Cessna 172P · Seattle, WA · Accident · Minor injuries · Limited investigation · Final report · Apr 11, 2000 · N38GF · Substantial damage
  > The pilot's failure to attain proper alignment with the landing runway, and her failure to maintain proper glide path for the landing runway, resulting in an encounter with vortex turbulence from a preceding heavy aircraft landing on a parallel runway and…
- [NTSB SEA91LA068](https://openairdocs.org/ntsb/SEA91LA068.md): Cessna 140 · Pullman, WA · Accident · No injuries · Limited investigation · Final report · Mar 17, 1991 · N2455N · Substantial damage
  > The pilot's encounter with wake turbulence shortly before touchdown, resulting in a hard landing.
- [NTSB SEA90LA136](https://openairdocs.org/ntsb/SEA90LA136.md): North American P-51 · Seattle, WA · Accident · No injuries · Limited investigation · Final report · Jul 14, 1990 · NX51VC · Substantial damage
  > An encounter with vortex turbulence while on final approach to landing.
- [NTSB SEA84LA083](https://openairdocs.org/ntsb/SEA84LA083.md): Hughes 369D · Kent, WA · Accident · Minor injuries · Limited investigation · Final report · Apr 14, 1984 · N1092L · Substantial damage
  > The plt requested clearance to transit the seattle tca for a landing at Boeing field. He was advised of a DC-10 departing the seattle-tacoma intl arpt & was cautioned about possible wake turbulence. The DC-10 passed the helicopter with about 1 1/2 mi lateral…
- [NTSB SEA82DA128](https://openairdocs.org/ntsb/SEA82DA128.md): Aeronca 7AC · Kent, WA · Accident · Serious injuries · Final report · Jul 24, 1982 · N82651 · Destroyed
  > During practice steep turns the aircraft encountered its wake turbulence. Manuevers to regain control were not effective. The aircraft contacted trees in a nose low attitude.
- [NTSB SEA82DA045](https://openairdocs.org/ntsb/SEA82DA045.md): Rockwell Intl. S-2R · Eureka, WA · Accident · No injuries · Final report · Apr 5, 1982 · N8471V · Substantial damage
  > After spraying most of his load, the pilot made a dry pass and dropped a smoke flare. The flare was dropped to check the drift of the air relative to a susceptible crop east of the field being sprayed. After dropping the flare, the pilot made a 180 degree…

## 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 o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 410)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=410&state=WA

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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.