# DC regulator

- 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 regulator
- NTSB code: 01022436
- Cases: 4
- In the probable cause: 2
- Fatal cases: 0
- All cases: https://openairdocs.org/ntsb-findings/01022436/cases.md
- Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01022436/cases.md?cause=1
- Page: https://openairdocs.org/ntsb-findings/01022436

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

- 2008: 0 / 1
- 2009: 1 / 1
- 2015: 1 / 1
- 2016: 0 / 1

## Defining events in these cases

- [Electrical system malf/failure](https://openairdocs.org/ntsb-events/332): 2 cases
- [Fire/smoke (non-impact)](https://openairdocs.org/ntsb-events/150): 1 cases
- [Landing gear collapse](https://openairdocs.org/ntsb-events/094): 1 cases

## Aircraft models (registry)

- [Cessna 182P](https://openairdocs.org/model/cessna-182p): 1 cases
- [Cessna P210N](https://openairdocs.org/model/cessna-p210n): 1 cases
- [Iniziative Industriali Italian SKY ARROW 600 SPORT](https://openairdocs.org/model/iniziative-industriali-italian-sky-arrow-600-sport): 1 cases
- [Jones Steven LANCAIR-IV-P](https://openairdocs.org/model/jones-steven-lancair-iv-p): 1 cases

## Other findings in the same cases

- [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 1 cases
- [Installation](https://openairdocs.org/ntsb-findings/02062035) (Personnel issues): 1 cases
- [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 1 cases
- [Identification/recognition](https://openairdocs.org/ntsb-findings/02041510) (Personnel issues): 1 cases
- [Airspeed](https://openairdocs.org/ntsb-findings/01062010) (Aircraft): 1 cases
- [Gear extension and retract sys](https://openairdocs.org/ntsb-findings/01023230) (Aircraft): 1 cases
- [DC power distribution system](https://openairdocs.org/ntsb-findings/01022460) (Aircraft): 1 cases
- [DC generator-alternator](https://openairdocs.org/ntsb-findings/01022434) (Aircraft): 1 cases
- [Battery/charger](https://openairdocs.org/ntsb-findings/01022432) (Aircraft): 1 cases

## Newest cases

- [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 CEN15LA369](https://openairdocs.org/ntsb/CEN15LA369), Aug 18, 2015: Cessna 182P (N6KW), Bolivar, MO, substantial damage. Probable cause: 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…
- [NTSB ERA09IA326](https://openairdocs.org/ntsb/ERA09IA326), Jun 8, 2009: Iniziative Sky Arrow (N445SA), Marietta, GA, incident, no damage. Probable cause: 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…
- [NTSB NYC08FA292](https://openairdocs.org/ntsb/NYC08FA292), Aug 11, 2008: Steven A. Jones Lancair IV P (N731SJ), Stafford, VA, substantial damage. Probable cause: 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…

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.