# NTSB investigations: Pneumatic system

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 ERA22LA148](https://openairdocs.org/ntsb/ERA22LA148.md): Cessna 525 · Middle River, MD · Accident · No injuries · Class 3 · Limited · Final report · Mar 7, 2022 · N22AU · Substantial damage
  > And undetermined failure of the brake system. Contributing to the accident was the failure of the pilots to locate and operate the emergency brake control, which resulted in a runway excursion and collision with terrain and an object.
- [NTSB GAA18CA407](https://openairdocs.org/ntsb/GAA18CA407.md): Beech 58 · Mackinac Island, MI · Accident · No injuries · Data collection · Final report · Jul 1, 2018 · N66568 · Substantial damage
  > The pilot’s failure to remove the pitot tube cover during the preflight inspection, which resulted in his delayed decision to reject the takeoff with insufficient runway remaining to safely stop the airplane.
- [NTSB WPR17LA214](https://openairdocs.org/ntsb/WPR17LA214.md): SC Aerostar YAK 52W · El Cajon, CA · Accident · No injuries · Limited investigation · Final report · Sep 23, 2017 · N52KF · Substantial damage
  > The pilot's failure to maintain directional control during taxi after a reduction in braking performance and steering capabilities due to his failure to reopen the air supply valve after the nonstandard engine start.
- [NTSB WPR14LA251](https://openairdocs.org/ntsb/WPR14LA251.md): Airbus AS 350 BA FX1 · Wailuku, HI · Accident · No injuries · Limited investigation · Final report · Jun 17, 2014 · N6094H · Substantial damage
  > The failure of the engine’s pneumatic fuel control line fitting, resulting in a loss of engine power. Contributing to the failure was the repeated loosening and re-torqueing of the fitting during required maintenance and inspection.
- [NTSB CEN12LA374](https://openairdocs.org/ntsb/CEN12LA374.md): Yakovlev Yak-52 · Loveland, CO · Accident · No injuries · Limited investigation · Final report · Jun 14, 2012 · N76YK · Substantial damage
  > The pilot’s inadvertent closure of the pneumatic system valve, which resulted in the nose landing gear not fully extending before landing. Contributing to the accident was the pilot's reliance on the mechanical landing gear position indicators instead of the…

## 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", '010236'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/010236/cases

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