# NTSB investigations: DC generator-alternator

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 CEN25LA401](https://openairdocs.org/ntsb/CEN25LA401.md): CubCrafters CCK-2000 · Thompsonville, MI · Accident · No injuries · Class 3 · Limited · Final report · Sep 7, 2025 · N40DT · Substantial damage
  > A total loss of engine power due to a lack of ignition resulting from a fractured alternator ring terminal and the builder’s incorrect installation of the wire connecting to the alternator. Contributing to the total loss of engine power was the failure of the…
- [NTSB ERA24LA337](https://openairdocs.org/ntsb/ERA24LA337.md): Piper PA-32R-301T · North Myrtle Beach, SC · Accident · No injuries · Class 4 · Limited · Final report · Jul 30, 2024 · N5343C · Substantial damage
  > The pilot’s failure to use the emergency landing gear extension system, resulting in a gear-up landing. Contributing to the accident was an alternator belt failure.
- [NTSB WPR24LA157](https://openairdocs.org/ntsb/WPR24LA157.md): Cessna P210 · Daggett, CA · Accident · No injuries · Class 3 · Limited · Final report · May 16, 2024 · N4769K · Substantial damage
  > The pilot’s failure to detect the tripped alternator circuit breaker in flight, which resulted in a drained battery that prevented the landing gear from fully extending to the down-and-locked position. Contributing to the accident was the improperly installed…
- [NTSB CEN17LA313](https://openairdocs.org/ntsb/CEN17LA313.md): Canion Michael W Zodiac 601XL · Grady, AR · Accident · No injuries · Limited investigation · Final report · Jul 20, 2017 · N577M · Substantial damage
  > The loss of engine power due to a lack of ignition resulting from a broken alternator wire.
- [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.

## 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", '01022434'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/01022434/cases

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