# DC generator-alternator

- Type: NTSB finding subsection
- Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft systems](https://openairdocs.org/ntsb-findings/0102) › [Electrical power system](https://openairdocs.org/ntsb-findings/010224) › DC generator-alternator
- NTSB code: 01022434
- Cases: 5
- In the probable cause: 4
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01022434/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01022434/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01022434

## Cases per year (in the probable cause / all)

- 2016: 0 / 1
- 2017: 1 / 1
- 2024: 2 / 2
- 2025: 1 / 1

## Defining events in these cases

- [Electrical system malf/failure](https://openairdocs.org/ntsb-events/332): 2 cases
- [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 1 cases
- [Landing gear not configured](https://openairdocs.org/ntsb-events/095): 1 cases
- [Landing gear collapse](https://openairdocs.org/ntsb-events/094): 1 cases

## Aircraft models (registry)

- [Cessna P210N](https://openairdocs.org/model/cessna-p210n): 2 cases
- [Piper PA-32R-301T](https://openairdocs.org/model/piper-pa-32r-301t): 1 cases
- [David Terhaar CCK-2000](https://openairdocs.org/model/david-terhaar-cck-2000): 1 cases
- [Canion Michael W ZODIAC 601XL](https://openairdocs.org/model/canion-michael-w-zodiac-601xl): 1 cases

## Other findings in the same cases

- [Gear extension and retract sys](https://openairdocs.org/ntsb-findings/01023230) (Aircraft): 3 cases
- [Forgotten action/omission](https://openairdocs.org/ntsb-findings/02041035) (Personnel issues): 2 cases
- [DC power distribution system](https://openairdocs.org/ntsb-findings/01022460) (Aircraft): 2 cases
- [Battery/charger](https://openairdocs.org/ntsb-findings/01022432) (Aircraft): 2 cases
- [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 1 cases
- [Installation](https://openairdocs.org/ntsb-findings/02062035) (Personnel issues): 1 cases
- [Incorrect action performance](https://openairdocs.org/ntsb-findings/02041015) (Personnel issues): 1 cases
- [Engine (reciprocating), general](https://openairdocs.org/ntsb-findings/01058500) (Aircraft): 1 cases
- [Landing gear system, general](https://openairdocs.org/ntsb-findings/01023200) (Aircraft): 1 cases
- [Handpump, auxiliary](https://openairdocs.org/ntsb-findings/01022924) (Aircraft): 1 cases

## Newest cases

- [NTSB CEN25LA401](https://openairdocs.org/ntsb/CEN25LA401), Sep 7, 2025: CubCrafters CCK-2000 (N40DT), Thompsonville, MI, substantial damage. Probable cause: 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.…
- [NTSB ERA24LA337](https://openairdocs.org/ntsb/ERA24LA337), Jul 30, 2024: Piper PA-32R-301T (N5343C), North Myrtle Beach, SC, substantial damage. Probable cause: 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), May 16, 2024: Cessna P210 (N4769K), Daggett, CA, substantial damage. Probable cause: 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…
- [NTSB CEN17LA313](https://openairdocs.org/ntsb/CEN17LA313), Jul 20, 2017: Canion Michael W Zodiac 601XL (N577M), Grady, AR, substantial damage. Probable cause: The loss of engine power due to a lack of ignition resulting from a broken alternator wire.
- [NTSB CEN16LA356](https://openairdocs.org/ntsb/CEN16LA356), Aug 5, 2016: Cessna P210N (N323DC), Waco, TX, substantial damage. Probable cause: 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…

NTSB has coded findings and defining events since 2008; earlier cases used its older occurrence and cause codes and aren't counted.

Findings: https://openairdocs.org/ntsb-findings.md. Defining events: https://openairdocs.org/ntsb-events.md. Phases of flight: https://openairdocs.org/ntsb-phases.md. Every investigation, filtered by finding, event, phase, state, year or model: https://openairdocs.org/ntsb.md (for example ?state=MI&fatal=1).

NTSB's definitions: Accident and incident, 49 CFR 830.2 (https://www.ecfr.gov/current/title-49/subtitle-B/chapter-VIII/part-830/subpart-A/section-830.2), CICTT occurrence categories (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/OccurrenceCategoryDefinitions.pdf), CICTT phases of flight (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/PhaseofFlightDefinitions.pdf), and NTSB coding manual, before 2008 (PDF) (https://www.ntsb.gov/GILS/Documents/codman.pdf). NTSB publishes no definitions for its findings, only their names.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.