# NTSB investigations: Pratt & Whitney Canada PW121: Aerodynamic stall/spin

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 DCA12IA141](https://openairdocs.org/ntsb/DCA12IA141.md): De Havilland DHC8 · Soldotna, AK · Incident · No injuries · Incident investigation · Final report · Sep 5, 2012 · N886EA · No damage
  > an in-flight loss of control due to the flight crew's inattention to airspeed, pitch attitude, and engine power during the climb leading to an aerodynamic stall. Contributing to the incident was the flight crew's failure to recognize and properly recover from…
- [NTSB CEN09MA142](https://openairdocs.org/ntsb/CEN09MA142.md): Aerospatiale Alenia ATR 42-320 · Lubbock, TX · Accident · Serious injuries · Class 1 · Major · Final report · Jan 27, 2009 · N902FX · Substantial damage
  > The flight crew's failure to monitor and maintain a minimum safe airspeed while executing an instrument approach in icing conditions, which resulted in an aerodynamic stall at low altitude. Contributing to the accident were 1) the flight crew's failure to…

## 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 ('52124')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '241'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/241/cases?engine=52124

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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.