# NTSB investigations, CT: Aircraft maintenance event

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 ERA19LA030](https://openairdocs.org/ntsb/ERA19LA030.md): Piper PA28 · Simsbury, CT · Accident · Minor injuries · Limited investigation · Final report · Oct 28, 2018 · N8132X · Substantial damage
  > Maintenance personnel's inadequate inspection of the wheel brake system during the airplane's most recent 100-hour inspection, which resulted in a loss of hydraulic fluid and the pilot's inability to control the airplane during the landing.
- [NTSB ERA17FA327](https://openairdocs.org/ntsb/ERA17FA327.md): Mooney M20C · North Branford, CT · Accident · 2 fatal · Field investigation · Final report · Sep 16, 2017 · N53CP · Substantial damage
  > A total loss of engine power due to fuel starvation as the result of foreign object debris in the fuel selector valve. Contributing to the accident was the pilot's selection of a low cruising altitude, which reduced the available time to troubleshoot the loss…
- [NTSB ERA17LA275](https://openairdocs.org/ntsb/ERA17LA275.md): Piper J3C · Salisbury, CT · Accident · Minor injuries · Limited investigation · Final report · Aug 13, 2017 · N98550 · Substantial damage
  > An improper replacement of the crankshaft by maintenance personnel, which resulted in a failure of the crankshaft gear and total loss of engine power.
- [NTSB ERA13LA116](https://openairdocs.org/ntsb/ERA13LA116.md): Robinson Helicopter R22 Beta · Ellington, CT · Accident · Minor injuries · Limited investigation · Final report · Jan 17, 2013 · N26NE · Substantial damage
  > The separation of the collective push-pull tube and jackshaft assembly, which resulted in the total loss of helicopter control and collision with terrain. Contributing to the accident was the inadequate supervision of maintenance personnel by the operator…

## 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."eventStateOrRegion" = 'CT' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '040' 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/040/sequence?state=CT

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