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Electrical pwr sys wiring

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NTSB finding · Aircraft › Aircraft systems › Electrical power system

All 44 cases42 in the probable cause
Cases
44
In the probable cause
42 (95%)
Fatal cases
6
NTSB code
01022497

NTSB has coded findings and defining events since 2008. Earlier cases used its older occurrence and cause codes, so they aren’t counted here.

When and where

In green, cases where NTSB made it part of the probable cause; in gray, a factor or other finding. Findings are coded with the final report, often a year or more after the event, so the latest years are incomplete.

Cases per year

2008In the probable causeFactor only2026

Where

Open the map
Query with SQL
duckdb -csv -c "SELECT year(c.\"eventDate\") AS year, count(DISTINCT f.case_mkey) AS cases,
    count(DISTINCT f.case_mkey) FILTER (WHERE f.\"inProbableCause\") AS in_probable_cause
  FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = f.case_mkey
  WHERE starts_with(f.\"findingCode\", '01022497') AND c.\"eventDate\" >= DATE '2000-01-01'
  GROUP BY 1
  ORDER BY 1"

Prints the counts as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

In the same cases

Defining events
Aircraft models

Aircraft matched to the registry by N-number and date.

Other findings
Query with SQL
duckdb -csv -c "WITH matched AS (SELECT DISTINCT case_mkey, aircrafts_position FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' WHERE starts_with(\"findingCode\", '01022497'))
  SELECT * FROM (
  SELECT 'Defining event' AS kind, e.\"tier2Number\" AS code, max(e.\"eventTier2Name\") AS name, count(DISTINCT f.case_mkey) AS cases
  FROM matched f JOIN 'https://openairdocs.org/data/latest/ntsb_events.parquet' e ON e.case_mkey = f.case_mkey AND e.aircrafts_position = f.aircrafts_position AND e.\"isDefiningEvent\"
  WHERE e.\"tier2Number\" <> ''
  GROUP BY ALL
  UNION ALL
  SELECT 'Aircraft model', a.aircraft_model_code, any_value(concat_ws(' ', m.manufacturer, m.model)), count(DISTINCT f.case_mkey)
  FROM matched f JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = f.case_mkey AND a.position = f.aircrafts_position
  LEFT JOIN 'https://openairdocs.org/data/latest/faa_aircraft_model.parquet' m ON m.code = a.aircraft_model_code
  WHERE a.aircraft_model_code IS NOT NULL
  GROUP BY ALL
  UNION ALL
  SELECT 'Other finding', left(g.\"findingCode\", 8), max(g.\"tier4Name\"), count(DISTINCT g.case_mkey)
  FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' g
  WHERE g.case_mkey IN (SELECT case_mkey FROM matched) AND NOT starts_with(g.\"findingCode\", '01022497') AND g.\"findingCode\" GLOB '[0-9][0-9]*'
  GROUP BY ALL
  )
  QUALIFY row_number() OVER (PARTITION BY kind ORDER BY cases DESC) <= 10
  ORDER BY kind, cases DESC"

Prints the counts as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

Newest cases · 44

NTSB CEN25LA401Accident · No injuriesClass 3 · LimitedFinal reportCubCrafters CCK-2000 · Thompsonville, MIA 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…Sep 7, 2025 · N40DT · Substantial damageNTSB CEN24LA366Accident · No injuriesClass 3 · LimitedFinal reportCessna 172M · Ackerman, MSThe 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 interference of the instrument panel wiring with the flight control…Sep 20, 2024 · N73154 · Substantial damageNTSB WPR24LA081Accident · Serious injuriesClass 3 · LimitedFinal reportChristopher Randall Raptor Junior 540 · Camarillo, CAA total loss of engine power due to the loss of power to the electronic fuel injection and ignition system, which was the result of a loose connection between a common ground feed-through stud and the ground bus.Jan 30, 2024 · N906CR · Substantial damageNTSB CEN23LA402Accident · No injuriesClass 3 · LimitedFinal reportVans RV14 · Orchard, TXThe failure of an alternator belt and the builder/previous owner’s incorrect electrical wiring of the airplane’s other alternator, which resulted in a total loss of electrical and engine power.Sep 4, 2023 · N14NP · Substantial damageNTSB CEN23LA390Accident · No injuriesClass 3 · LimitedFinal reportZlin Aviation S R O Savage Norden · Cabot, ARThe airplane manufacturer’s routing of the fuel pump wiring next to the engine’s turbocharger and exhaust, which thermally damaged the wiring and resulted in a malfunction of the fuel delivery system and a total loss of engine power.Aug 30, 2023 · N7373 · Substantial damageNTSB ERA23LA320Accident · 1 fatalClass 3 · LimitedFinal reportMesnard Velocity Twin · Sandersville, GAA total loss of power in the right engine due to the right ECU injector wires being severed by the main landing gear actuator piston teeter bar as a result of a lack of clearance and protection of the wiring bundle.Aug 1, 2023 · N106VT · Substantial damageNTSB ERA23LA347Accident · No injuriesClass 3 · LimitedFinal reportPiper PA28 · Knoxville, TNAn in-flight fire that resulted from an inadequate 100-hr inspection, which failed to detect and correct improper electrical cable routing in the engine compartment.Jul 27, 2023 · N15417 · Substantial damageNTSB ERA23FA137Accident · 1 fatalClass 3 · FieldFinal reportPiper PA-28-161 · Lindenhurst, NYAn in-flight fire due to a compromised oil pressure line fitting, which resulted in a collision with terrain during a subsequent emergency landing.Mar 5, 2023 · N8149R · DestroyedNTSB ERA23LA065Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-28-181 · Manassas, VAAn engine fire caused by chafing and subsequent electrical arcing of the alternator wire near a fuel source.Nov 18, 2022 · N8129M · Substantial damageNTSB CEN23LA014Accident · No injuriesClass 3 · LimitedFinal reportDiamond Aircraft Ind DA 62 · Dallas, TXA total loss of airplane electrical power for undetermined reasons, which resulted in a complete loss of engine power to both engines. Contributing was the worn main battery and the incorrectly wired ECU backup batteries.Oct 15, 2022 · N84LT · Substantial damage
See all 44 cases
Query with SQL
duckdb -csv -c "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\", '01022497'))
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.