# DC generation system - 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 generation system - NTSB code: 01022430 - Cases: 6 - In the probable cause: 5 - Fatal cases: 0 - All cases: https://openairdocs.org/ntsb-findings/01022430/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01022430/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/01022430 ## Cases per year (in the probable cause / all) - 2009: 1 / 1 - 2012: 0 / 1 - 2015: 1 / 1 - 2019: 1 / 1 - 2024: 1 / 1 - 2025: 1 / 1 ## Defining events in these cases - [Electrical system malf/failure](https://openairdocs.org/ntsb-events/332): 4 cases - [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 1 cases - [Landing gear collapse](https://openairdocs.org/ntsb-events/094): 1 cases ## Aircraft models (registry) - [Raytheon B200](https://openairdocs.org/model/raytheon-b200): 1 cases - [Piper PA-30](https://openairdocs.org/model/piper-pa-30): 1 cases - [Piper PA-24-250](https://openairdocs.org/model/piper-pa-24-250): 1 cases - [Cessna TU206G](https://openairdocs.org/model/cessna-tu206g): 1 cases - [Ziebell Grant G ZENITH CH 750 STOL](https://openairdocs.org/model/ziebell-grant-g-zenith-ch-750-stol): 1 cases - [Butler Raymond ROTORWAY EXEC 162F](https://openairdocs.org/model/butler-raymond-rotorway-exec-162f): 1 cases ## Other findings in the same cases - [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 2 cases - [Gear extension and retract sys](https://openairdocs.org/ntsb-findings/01023230) (Aircraft): 2 cases - [Incomplete action](https://openairdocs.org/ntsb-findings/02041040) (Personnel issues): 1 cases - [Incorrect action sequence](https://openairdocs.org/ntsb-findings/02041020) (Personnel issues): 1 cases - [Engine (reciprocating), general](https://openairdocs.org/ntsb-findings/01058500) (Aircraft): 1 cases - [Gear position and warning](https://openairdocs.org/ntsb-findings/01023260) (Aircraft): 1 cases - [DC power distribution system](https://openairdocs.org/ntsb-findings/01022460) (Aircraft): 1 cases - [DC indicating system](https://openairdocs.org/ntsb-findings/01022437) (Aircraft): 1 cases ## Newest cases - [NTSB CEN25LA079](https://openairdocs.org/ntsb/CEN25LA079), Jan 15, 2025: Piper PA-24-250 (N8051P), Tyler, TX, substantial damage. Probable cause: An electrical system surge for a reason that could not be determined that resulted in an overvoltage event, internal damage to electronics equipment, smoke in the cockpit, and a gear up landing. - [NTSB WPR24LA109](https://openairdocs.org/ntsb/WPR24LA109), Mar 12, 2024: Raytheon B200 (N299AV), Billings, MT, substantial damage. Probable cause: The pilot's improper engine start, resulting in the engine starters remaining engaged and the generators not being activated, which led to the discharge of the airplane’s battery and subsequent total… - [NTSB ERA19LA177](https://openairdocs.org/ntsb/ERA19LA177), May 16, 2019: Zenith CH750 (N750GZ), Savannah, TN, substantial damage. Probable cause: The total loss of engine power due to a loss of all electrical power. Contributing to the accident was the inaccessible placement of the alternator circuit breaker and the construction of the… - [NTSB CEN15LA132](https://openairdocs.org/ntsb/CEN15LA132), Jan 31, 2015: Butler Raymond Rotorway Exec 162F (N162RB), Seadrift, TX, substantial damage. Probable cause: A fault in the No. 1 engine control module, which disabled the ignition system and resulted in the engine losing power; during the subsequent autorotation, the main rotor rpm was further reduced just… - [NTSB CEN12LA204](https://openairdocs.org/ntsb/CEN12LA204), Mar 2, 2012: Piper PA-30 (N373JT), Roanoke, TX, substantial damage. Probable cause: The pilot’s failure to follow the published emergency procedures to lower the landing gear following a loss of electrical power. - [NTSB WPR09LA423](https://openairdocs.org/ntsb/WPR09LA423), Aug 28, 2009: Cessna TU206G (N682RC), Ballard, WA, substantial damage. Probable cause: The pilot's precautionary water landing with partially extended landing gear. Contributing to the accident was the unidentified anomaly with the airplane's electrical system, which rendered the gear… 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.