NTSB investigations
25 cases where NTSB found Alternator-generator drive sys.
Cases per year
| 2008 | 1 |
|---|---|
| 2010 | 2 |
| 2011 | 1 |
| 2012 | 1 |
| 2014 | 2 |
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 2 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 2 |
| 2026 | 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\", '01022410')) 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", '01022410')) 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 ERA26LA191Accident · No injuriesClass 4 · LimitedFinal reportBeech F33A · Sanford, NCA 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 CEN24LA308Incident · No injuriesClass 3 · LimitedFinal reportCirrus Design SR22T · Tulsa, OKThe mechanic’s improper installation of the alternator wiring connections, which resulted in electrical arcing and thermal damage to the airplane.NTSB CEN24LA185Accident · Serious injuriesClass 3 · LimitedFinal reportTitan T51 · Novi, MIA failure of the electrical system, resulting in a loss of fuel injection and subsequent loss of engine power.NTSB CEN24LA060Accident · Serious injuriesClass 3 · LimitedFinal reportPiper PA-24-260 · Anthony, KSA failure of the airplane’s alternator, which resulted in a loss of electrical power, and the pilot’s failure to use the emergency gear extension procedure during the initial landing approach, which led to a gear-up landing.NTSB 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.NTSB WPR22LA233Accident · No injuriesClass 4 · LimitedFinal reportGMK Ventures AL18 · Moab, UTThe pilot’s failure to maintain directional control during a landing attempt, which resulted in a ground loop and collision with terrain. Contributing to the accident was the absence of an airspeed indicator due to an alternator failure.NTSB ERA22LA155Accident · No injuriesClass 3 · LimitedFinal reportAircraft Designs Stallion · Ridgeland, SCA loss of sufficient electrical power to the engine’s electronic fuel injection/ignition system for undetermined reasons, which resulted in a total loss of engine power.NTSB WPR22LA063Accident · No injuriesClass 4 · LimitedFinal reportBeech 200 · Eugene, ORThe pilot’s improper checklist use, which resulted in an electrical malfunction and subsequent gear up landing.NTSB WPR22FA021Accident · 1 fatalClass 3 · FieldFinal reportCessna 150L · Dunsmuir, CAThe non-certificated pilot’s improper decision to continue the flight under visual flight rules into instrument meteorological conditions which resulted in controlled flight into terrain.NTSB CEN21LA373Accident · No injuriesClass 4 · LimitedFinal reportMooney M20F · New Albany, MSThe pilot’s delayed decision to abort the landing that resulted in a collision with a fence post. Contributing to the accident was the failure of the alternator drive belt during cruise flight for unknown reasons and the subsequent inoperative electrical…NTSB CEN21LA065Accident · No injuriesClass 3 · LimitedFinal reportPiper PA32R · Canon City, COThe failure of the alternator drive belt, which resulted in insufficient electrical power to extend the landing gear and a subsequent gear-up landing. .NTSB CEN20LA179Accident · 1 fatalClass 3 · LimitedFinal reportCessna P210 · Burlington, WIThe pilot did not maintain a safe altitude during the visual approach, and subsequently lost control which resulted an impact with trees and terrain.NTSB WPR18LA030Accident · No injuriesLimited investigationFinal reportVanderark RV-10 · Sun Lakes, AZThe fatigue fractures of the upper and lower alternator attachment bolts, which decreased the common drive belt tension and resulted in the subsequent in-flight separation of an alternator drive belt, the overheating of the engine, and the subsequent total…NTSB WPR17FA108Accident · 2 fatalField investigationFinal reportPiper PA 30 · Haines, AKThe pilot's decision to turn toward the inoperative engine after conducting a low-level pass, which resulted in an aerodynamic stall at too low an altitude to recover. Contributing to the accident was the pilot's decision to perform the flight and the engine…NTSB ANC17LA014Accident · Serious injuriesLimited investigationFinal reportPiper PA 32R-300 · McGrath, AKThe failure of the nose landing gear to extend and lock due to the failure of the alternator and reduced battery power due to the cold ambient temperature, which prohibited the electrically-driven hydraulic pump from supplying adequate hydraulic pressure to…NTSB ERA16LA162Accident · Minor injuriesClass 3 · LimitedFinal reportCostruzioni Aeronautiche Tecna P2008 · Burgaw, NCThe pilot’s failure to activate the airplane’s alternator, which resulted in an eventual loss of electrical power to the engine’s fuel pumps, fuel starvation, and a total loss of engine power. Contributing was the pilot’s use of an incomplete checklist.NTSB ERA16LA135Accident · No injuriesLimited investigationFinal reportCessna 210L · Myrtle Beach, SCA complete loss of electrical power, which resulted from the separation of an alternator wire due to corrosion. Contributing to the accident was the failure of the emergency landing gear extension system due to a lack of hydraulic fluid, which resulted in…NTSB ERA15FA254Accident · 3 fatalField investigationFinal reportBeech A36 · Plainville, MAThe total loss of engine power due to the failure of the alternator drive coupling. Contributing to the accident was the pilot's inability to locate and navigate to a suitable forced landing site due to low cloud ceilings.NTSB ENG14IA019Incident · No injuriesIncident investigationFinal reportBoeing 767 332 · Los Angeles, CAThe combination of fuel leaking from the integrated drive generator (IDG) fuel/oil heat exchanger and the coincident arcing of the IDG power feeder cables that ignited the leaking fuel. Contributing to the ignition of the fuel was the misrouting of the IDG…NTSB ERA14LA244Accident · No injuriesLimited investigationFinal reportPiper PA-28-235 · Brooksville, FLThe pilot’s loss of directional control while landing at night, which resulted in a runway excursion and collision with airport signage. Contributing to the accident was the total loss of electrical power, which necessitated the pilot having to land without…NTSB WPR12LA402Accident · Serious injuriesLimited investigationFinal reportHansen HANSEN-VANS RV-6 · Lemolo Lake, ORAn overvoltage event due to the failure of the automotive voltage regulator, which resulted in electrical anomalies and smoke in the cockpit and a subsequent forced off-airport landing.NTSB ERA12LA071Accident · No injuriesLimited investigationFinal reportSiai-Marchetti S205-22R · Okeechobee, FLA partial loss of engine power due to a failure of the drive bearings in the alternator drive system. Contributing to the accident was the inadequate maintenance.NTSB CEN11CA103Accident · No injuriesData collectionFinal reportPiper PA-28RT-201T · Spring, TXThe failure of the right landing gear down-lock mechanism to fully engage. Contributing to the accident was the pilot’s inability to verify the landing gear extension due to the inoperative alternator.NTSB ERA10CA412Accident · No injuriesData collectionFinal reportMooney M20M · Poughkeepsie, NYThe pilot's improper flare which resulted in a hard landing, loss of directional control and runway excursion.NTSB LAX08IA093Incident · No injuriesIncident investigationFinal reportBennett Lancair 320 · Hillsboro, ORThe malfunction of the airplane's battery and alternator that resulted in the failure of the landing gear to extend and lock in place.