# NTSB investigations: Pratt & Whitney PW4000 series: In flight encounter with weather

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 LAX07LA204](https://openairdocs.org/ntsb/LAX07LA204.md): Boeing 747-422 · Oceanic · Accident · Serious injuries · Limited investigation · Final report · Jun 27, 2007 · N120UA · No damage
  > An in-flight encounter with turbulence that resulted in serious injury to a flight attendant.
- [NTSB CHI03LA237](https://openairdocs.org/ntsb/CHI03LA237.md): Boeing B777-222 · Chicago, IL · Accident · Serious injuries · Limited investigation · Final report · Jul 17, 2003 · N779UA · No damage
  > The turbulence encountered during the descent which seriously injured a passenger returning to her seat after the seat belt sign was activated. A factor was that it was not possible for the returning passenger to comply with the lit seat belt sign.
- [NTSB CHI97LA292](https://openairdocs.org/ntsb/CHI97LA292.md): Boeing 747-422 · Grand Forks, ND · Accident · Serious injuries · Limited investigation · Final report · Sep 14, 1997 · N175UA · No damage
  > The flight attendant's seat belt was not secured. A factor was turbulence in the clouds.
- [NTSB LAX97LA112](https://openairdocs.org/ntsb/LAX97LA112.md): Boeing 767-300 · San Francisco, CA · Accident · Serious injuries · Limited investigation · Final report · Feb 25, 1997 · N661UA · No damage
  > an encounter with unforecasted moderate clear air turbulence, while descending over mountainous terrain.
- [NTSB LAX96LA013](https://openairdocs.org/ntsb/LAX96LA013.md): Boeing 747-422 · Pacific Ocean (Pacific Ocean) · Accident · Serious injuries · Limited investigation · Final report · Oct 17, 1995 · N191UA · No damage
  > an inadvertent encounter with unreported and unforecasted severe turbulence. A factor in the accident was the passengers' non-use of seat belts during cruise flight.
- [NTSB LAX94LA141](https://openairdocs.org/ntsb/LAX94LA141.md): Boeing 747-400 · Pacific Ocean (Pacific Ocean) · Accident · Serious injuries · Limited investigation · Final report · Feb 12, 1994 · N186UA · No damage
  > the failure of the chief steward to verify that all flight attendants had been informed, and were complying with the captain's instructions to remain seated with their seatbelts fastened.

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52119')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 240))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52119&occurrence=240

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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.