# NTSB investigations: AC power distribution 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 CEN18LA086](https://openairdocs.org/ntsb/CEN18LA086.md): Swearingen SA227 TT · Houston, TX · Accident · No injuries · Limited investigation · Final report · Jan 19, 2018 · N6UP · Substantial damage
  > The failure of the left starter relay during engine start, which resulted in a loss of electrical and battery power during the flight and led to a forced landing with the nose landing gear not fully extended, causing substantial damage to the engines.
- [NTSB ERA16LA190](https://openairdocs.org/ntsb/ERA16LA190.md): Cessna R182 · Lake City, FL · Accident · No injuries · Limited investigation · Final report · May 16, 2016 · N9077C · Substantial damage
  > Internal failure of the main electrical contactor, which resulted in a complete loss of electrical power and an inability to extend the landing gear through normal means.
- [NTSB DCA09FA033](https://openairdocs.org/ntsb/DCA09FA033.md): Bombardier CRJ · Tallahassee, FL · Accident · No injuries · Field investigation · Final report · Feb 28, 2009 · N830AS · Substantial damage
  > An electrical anomaly in the top portion of the JB-1 junction box resulting in ignition of adjacent combustible materials, including insulation blankets, and a flexible oxygen line.
- [NTSB DCA08IA033](https://openairdocs.org/ntsb/DCA08IA033.md): Airbus A320 · Newark, NJ · Incident · No injuries · Incident investigation · Final report · Jan 25, 2008 · N462UA · No damage
  > a fault in the airplane's AC 1 electrical bus that caused a number of other electrical busses on the aircraft to lose power.

## 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", '01022450'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/01022450/cases

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