# NTSB investigations: Accumulator, main

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 CEN22LA378](https://openairdocs.org/ntsb/CEN22LA378.md): Cessna 210B · Clinton, AR · Accident · No injuries · Class 3 · Limited · Final report · Aug 9, 2022 · N9637X · Substantial damage
  > A fatigue crack in the hydraulic actuator, which resulted in the loss of hydraulic fluid and the pilot’s inability to fully extend the landing gear.
- [NTSB WPR14FA137](https://openairdocs.org/ntsb/WPR14FA137.md): Eurocopter AS 350 B2 · Seattle, WA · Accident · 2 fatal · Field investigation · Final report · Mar 18, 2014 · N250FB · Destroyed
  > The loss of helicopter control due to a loss of hydraulic boost to the tail rotor pedal controls at takeoff, followed by a loss of hydraulic boost to the main rotor controls after takeoff. The reason for the loss of hydraulic boost to the main and tail rotor…
- [NTSB CEN09LA417](https://openairdocs.org/ntsb/CEN09LA417.md): Cessna T210L · Santa Teresa, NM · Accident · No injuries · Limited investigation · Final report · Jul 1, 2009 · N2118S · Substantial damage
  > The failure of the landing gear accumulator seal for undetermined reasons. Contributing to the accident was the pilot’s failure to confirm the status of the landing gear.

## 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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '01022911'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/01022911/cases

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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.