NTSB investigations
14 cases where NTSB found AC generator-alternator.
Cases per year
| 2011 | 2 |
|---|---|
| 2012 | 4 |
| 2013 | 1 |
| 2014 | 2 |
| 2016 | 1 |
| 2018 | 2 |
| 2022 | 1 |
| 2023 | 1 |
Where
Open the mapLatest 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\", '01022421')) 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.
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", '01022421')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB CEN24LA056Accident · Minor injuriesClass 3 · LimitedFinal reportVans RV6 · Fordyce, ARThe pilot’s failure to attain a proper touchdown point following an unidentified electrical system failure and subsequent partial loss of engine power, which resulted in a runway overrun and impact with terrain. Contributing to the accident was the pilot’s…NTSB ERA23LA064Accident · No injuriesClass 3 · LimitedFinal reportBeech 95-B55 (T42A) · Athens, GAThe operator’s and the pilot’s continued operation of the airplane with a known electrical problem, resulting in a loss of electrical power and a gear-up landing.NTSB ERA18TA263Accident · Minor injuriesFinal reportZenith CH 750 · DeLeon Springs, FLThe pilot's operation of the airplane with the alternator switch in the off position, which allowed the selected battery to discharge and resulted in an ignition system failure and a total loss of engine power.NTSB CEN18LA097Accident · No injuriesLimited investigationFinal reportPiper PA 24-260 · Fargo, NDThe pilot's failure to use the published emergency procedures to manually extend the landing gear when an electrical failure precluded normal extension of the landing gear, resulting in the gear collapse during landing. Contributing to the accident was the…NTSB ERA16LA305Accident · No injuriesLimited investigationFinal reportDayton A Babcock Storm · Eustis, FLThe pilot's failure to maintain directional control during an aborted takeoff. Contributing to the accident were the loss of engine power due to a malfunctioning alternator, which precipitated the off-field landing, and the pilot’s decision to attempt to take…NTSB ERA14LA252Accident · No injuriesLimited investigationFinal reportCessna 182 · Elkton, MDThe pilot’s failure to attain the proper touchdown point during a no-flap landing to a wet, down-sloping runway, and the airplane's dynamic hydroplaning after touchdown, which resulted in a runway overrun. Contributing to the accident was a total loss of…NTSB DCA14CA043Accident · No injuriesData collectionFinal reportGeneral Atomics MQ-9 · Point Loma, CAintentional controlled ditching of the aircraft due to failure of the starter/generator supplying electrical power to the aircraft.NTSB WPR13LA237Accident · No injuriesLimited investigationFinal reportPiper PA-32R-301T · Chandler, AZThe failure of the alternator and/or battery, which prevented the operation of the landing gear extension system and resulted in the nose landing gear collapsing during the landing roll.NTSB ERA12LA450Accident · No injuriesLimited investigationFinal reportBeech A36 · Johns Island, SCThe pilot's failure to complete the manual emergency gear extension after a loss of electrical power. Contributing to the accident was the pilot's decision to delegate the landing gear extension to a non-pilot-rated passenger.NTSB CEN12FA251Accident · 1 fatalField investigationFinal reportCirrus Design SR22 · Newcomerstown, OHThe pilot’s loss of airplane control in instrument meteorological conditions due to his distraction by electrical system anomalies, which resulted in an uncontrolled descent. The reason for the electrical system anomalies could not be determined.NTSB CEN12LA220Accident · No injuriesLimited investigationFinal reportCirrus Design SR22T · Addison, TXMaintenance personnel’s improper maintenance, which resulted in the incorrect wiring of the No. 1 alternator and a subsequent electrical system fire during taxi. Contributing to the accident was the airplane manufacturer's inadequate maintenance documentation…NTSB WPR12LA097Accident · No injuriesLimited investigationFinal reportBeech 58P · Santa Ana, CAThe pilot’s failure to review or execute any applicable checklist procedures or troubleshoot or take corrective action before landing despite indications that the landing gear was not extended. Contributing to the accident were the pilot’s misunderstanding of…NTSB ERA11LA502Accident · Serious injuriesLimited investigationFinal reportCessna P210N · South Deerfield, MAThe failure of the electrical system due to an alternator failure during flight in instrument meteorological conditions, and the pilot’s inadequate preflight inspection and failure to use the approved checklist for the dual alternator system. Contributing to…NTSB ERA11CA255Accident · No injuriesData collectionFinal reportBeech F33A · Ocala, FLThe pilot's improper flare which resulted in a hard landing. Contributing to the accident was the pilot's distracted attention due to the electrical system failure.