# NTSB investigations: DC regulator

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 CEN16LA356](https://openairdocs.org/ntsb/CEN16LA356.md): Cessna P210N · Waco, TX · Accident · No injuries · Limited investigation · Final report · Aug 5, 2016 · N323DC · Substantial damage
  > The failure of the right main landing gear (MLG) down-lock mechanism, which resulted in the collapse of the landing gear. The root cause of the right MLG down-lock mechanism could not be determined because the components were not available for examination.
- [NTSB CEN15LA369](https://openairdocs.org/ntsb/CEN15LA369.md): Cessna 182P · Bolivar, MO · Accident · Minor injuries · Limited investigation · Final report · Aug 18, 2015 · N6KW · Substantial damage
  > Total electrical failure due to a failed voltage regulator and the pilot’s failure to maintain a proper airspeed during a precautionary landing, which resulted in a loss of directional control and a runway excursion.
- [NTSB ERA09IA326](https://openairdocs.org/ntsb/ERA09IA326.md): Iniziative Sky Arrow · Marietta, GA · Incident · No injuries · Incident investigation · Final report · Jun 8, 2009 · N445SA · No damage
  > An electrical fire due to the lack of a positive locking mechanism for the fuse retainer in the main fuse block, which resulted in voltage fluctuations that caused thermal damage to the avionics cooling fan. Contributing to the incident was the student…
- [NTSB NYC08FA292](https://openairdocs.org/ntsb/NYC08FA292.md): Steven A. Jones Lancair IV P · Stafford, VA · Accident · No injuries · Field investigation · Final report · Aug 11, 2008 · N731SJ · Substantial damage
  > The pilot's decision to install voltage regulators in the engine compartment where they were susceptible to water intrusion, which resulted in a malfunction of the standby electrical system's voltage regulator and a subsequent in-flight fire.

## 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", '01022436'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/01022436/cases

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