# Fatal NTSB investigations: Pressure/environ 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 ERA14LA424](https://openairdocs.org/ntsb/ERA14LA424.md): Socata TBM 700 · Caribbean Sea, A1 · Accident · 2 fatal · Limited investigation · Final report · Sep 5, 2014 · N900KN · Destroyed
  > The design of the cabin pressurization system, which made it prone to unnecessary shutdown, combined with a checklist design that prioritized troubleshooting over ensuring that the pilot was sufficiently protected from hypoxia. This resulted in a loss of…
- [NTSB ERA09FA429](https://openairdocs.org/ntsb/ERA09FA429.md): Cirrus SR-22 · Ravenswood, WV · Accident · 1 fatal · Field investigation · Final report · Jul 31, 2009 · N581DS · Destroyed
  > The pilot's improper modification of the certified, on-board oxygen system, which resulted in incapacitation due to hypoxia, and the airplane's subsequent uncontrolled descent into terrain.
- [NTSB CEN09FA087](https://openairdocs.org/ntsb/CEN09FA087.md): Beech C90 · Rocksprings, TX · Accident · 1 fatal · Field investigation · Final report · Dec 14, 2008 · N43KM · Substantial damage
  > The pilot's failure to properly configure the pressurization controls, resulting in his impairment and subsequent incapacitation due to hypoxia.

## 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."highestInjuryLevel" = 'Fatal'
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '331' 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/331/sequence?fatal=1

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