# Electrical power system - Type: NTSB finding section - Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft systems](https://openairdocs.org/ntsb-findings/0102) › Electrical power system - NTSB code: 010224 - Cases: 183 - In the probable cause: 157 - Fatal cases: 18 - All cases: https://openairdocs.org/ntsb-findings/010224/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/010224/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/010224 ## Cases per year (in the probable cause / all) - 2008: 11 / 12 - 2009: 9 / 9 - 2010: 7 / 10 - 2011: 8 / 11 - 2012: 7 / 10 - 2013: 7 / 8 - 2014: 8 / 8 - 2015: 9 / 11 - 2016: 16 / 18 - 2017: 11 / 11 - 2018: 7 / 10 - 2019: 13 / 14 - 2020: 6 / 7 - 2021: 5 / 8 - 2022: 8 / 9 - 2023: 10 / 12 - 2024: 11 / 11 - 2025: 3 / 3 - 2026: 1 / 1 ## Findings - [Electrical power system, general](https://openairdocs.org/ntsb-findings/01022400): 48 cases, 40 in the probable cause - [Electrical pwr sys wiring](https://openairdocs.org/ntsb-findings/01022497): 44 cases, 42 in the probable cause - [Battery/charger](https://openairdocs.org/ntsb-findings/01022432): 37 cases, 28 in the probable cause - [Alternator-generator drive sys](https://openairdocs.org/ntsb-findings/01022410): 25 cases, 22 in the probable cause - [AC generator-alternator](https://openairdocs.org/ntsb-findings/01022421): 14 cases, 12 in the probable cause - [DC power distribution system](https://openairdocs.org/ntsb-findings/01022460): 13 cases, 13 in the probable cause - [DC generation system](https://openairdocs.org/ntsb-findings/01022430): 6 cases, 5 in the probable cause - [DC generator-alternator](https://openairdocs.org/ntsb-findings/01022434): 5 cases, 4 in the probable cause - [AC generation system](https://openairdocs.org/ntsb-findings/01022420): 4 cases, 3 in the probable cause - [Starter-generator](https://openairdocs.org/ntsb-findings/01022435): 4 cases, 4 in the probable cause - [DC regulator](https://openairdocs.org/ntsb-findings/01022436): 4 cases, 2 in the probable cause - [AC power distribution system](https://openairdocs.org/ntsb-findings/01022450): 4 cases, 4 in the probable cause - [DC indicating system](https://openairdocs.org/ntsb-findings/01022437): 2 cases, 0 in the probable cause - [External power system](https://openairdocs.org/ntsb-findings/01022440): 2 cases, 1 in the probable cause - [AC inverter](https://openairdocs.org/ntsb-findings/01022422): 1 cases, 1 in the probable cause - [AC regulator](https://openairdocs.org/ntsb-findings/01022424): 1 cases, 1 in the probable cause - [DC rectifier-converter](https://openairdocs.org/ntsb-findings/01022433): 1 cases, 1 in the probable cause ## Defining events in these cases - [Electrical system malf/failure](https://openairdocs.org/ntsb-events/332): 62 cases - [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 25 cases - [Fire/smoke (non-impact)](https://openairdocs.org/ntsb-events/150): 20 cases - [Landing gear collapse](https://openairdocs.org/ntsb-events/094): 9 cases - [Landing gear not configured](https://openairdocs.org/ntsb-events/095): 7 cases - [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 6 cases - [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 6 cases - [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 5 cases - [Hard landing](https://openairdocs.org/ntsb-events/092): 5 cases - [Loss of control on ground](https://openairdocs.org/ntsb-events/230): 4 cases ## Aircraft models (registry) - [Cessna P210N](https://openairdocs.org/model/cessna-p210n): 5 cases - [Piper PA-32R-301T](https://openairdocs.org/model/piper-pa-32r-301t): 3 cases - [Piper PA-30](https://openairdocs.org/model/piper-pa-30): 3 cases - [Piper PA-24-250](https://openairdocs.org/model/piper-pa-24-250): 3 cases - [Cessna R182](https://openairdocs.org/model/cessna-r182): 3 cases - [Beech A36](https://openairdocs.org/model/beech-a36): 3 cases - [Raytheon B200](https://openairdocs.org/model/raytheon-b200): 2 cases - [Piper PA-28-161](https://openairdocs.org/model/piper-pa-28-161): 2 cases - [Piper PA-24-260](https://openairdocs.org/model/piper-pa-24-260): 2 cases - [Mooney M20K](https://openairdocs.org/model/mooney-m20k): 2 cases ## Other findings in the same cases - [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 28 cases - [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 26 cases - [Gear extension and retract sys](https://openairdocs.org/ntsb-findings/01023230) (Aircraft): 20 cases - [Not determined, general](https://openairdocs.org/ntsb-findings/05000000) (Not determined): 17 cases - [Installation](https://openairdocs.org/ntsb-findings/02062035) (Personnel issues): 13 cases - [Airspeed](https://openairdocs.org/ntsb-findings/01062010) (Aircraft): 12 cases - [Lack of action](https://openairdocs.org/ntsb-findings/02041030) (Personnel issues): 11 cases - [Use of equip/system](https://openairdocs.org/ntsb-findings/02063015) (Personnel issues): 10 cases - [Incorrect action performance](https://openairdocs.org/ntsb-findings/02041015) (Personnel issues): 9 cases - [Fuel](https://openairdocs.org/ntsb-findings/01071010) (Aircraft): 8 cases ## Newest cases - [NTSB ERA26LA191](https://openairdocs.org/ntsb/ERA26LA191), Apr 24, 2026: Beech F33A (N85WM), Sanford, NC, substantial damage. Probable cause: A loss of electrical power as a result of broken stator leads within the alternator, which resulted in the pilot’s inability to extend the airplane’s landing gear. - [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 CEN25LA201](https://openairdocs.org/ntsb/CEN25LA201), Jun 7, 2025: Lancair 235 (N25DB), Pawhuska, OK, substantial damage. Probable cause: The pilot’s failure to properly configure the airplane for landing. - [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 CEN25LA059](https://openairdocs.org/ntsb/CEN25LA059), Dec 11, 2024: Cessna 182T (N127SL), Pearland, TX, substantial damage. Probable cause: The AA-5 pilot’s failure to maintain separation from the 182T during approach and landing, which resulted in a ground collision during the landing roll. Contributing to the accident was the failure… - [NTSB CEN24LA366](https://openairdocs.org/ntsb/CEN24LA366), Sep 20, 2024: Cessna 172M (N73154), Ackerman, MS, substantial damage. Probable cause: The excessive airplane speed during a no-flap landing, and the pilot’s failure to attain a proper touchdown point, which resulted in a runway overrun. Contributing to the accident was the… - [NTSB CEN24LA308](https://openairdocs.org/ntsb/CEN24LA308), Aug 3, 2024: Cirrus Design SR22T (N825JC), Tulsa, OK, incident, substantial damage. Probable cause: The mechanic’s improper installation of the alternator wiring connections, which resulted in electrical arcing and thermal damage to the airplane. - [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 ERA24LA228](https://openairdocs.org/ntsb/ERA24LA228), May 25, 2024: Schleicher ASH 31 MI (N20SW), Winter Haven, FL, substantial damage. Probable cause: The pilot’s failure to ensure that a suitable landing area was available in case the restart of the motor glider’s engine was unsuccessful. Contributing, was insufficient battery charge to extend the… - [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 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.