NTSB investigations
1,074 cases where NTSB found Maintenance.
Cases per year
| 2008 | 76 |
|---|---|
| 2009 | 48 |
| 2010 | 56 |
| 2011 | 67 |
| 2012 | 79 |
| 2013 | 79 |
| 2014 | 64 |
| 2015 | 75 |
| 2016 | 62 |
| 2017 | 68 |
| 2018 | 54 |
| 2019 | 51 |
| 2020 | 53 |
| 2021 | 41 |
| 2022 | 64 |
| 2023 | 52 |
| 2024 | 62 |
| 2025 | 22 |
| 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\", '020620')) 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", '020620')) 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 ERA26LA151Accident · Minor injuriesClass 4 · LimitedFinal reportPiper PA-32-260 · Block Island, RIMaintenance personnel’s failure to ensure that the throttle cable was properly secured to the carburetor, which resulted an inflight separation of the throttle cable and the pilots’ inability to control the engine.NTSB CEN26LA074Accident · Minor injuriesClass 3 · LimitedFinal reportPitts S1S · Carbondale, ILA loss of engine power due to fuel starvation resulting from an uncommanded change to the fuel servo mixture position due to the improperly installed mixture cable.NTSB WPR26LA056Accident · No injuriesClass 4 · LimitedFinal reportRotorway Exec · Lake Havasu City, AZThe pilot’s improper securing hardware installation, which resulted in a loss of throttle control and a loss of engine power.NTSB CEN25LA402Accident · No injuriesClass 4 · LimitedFinal reportTextron 525C · Baton Rouge, LAThe improper installation of the trunnion pin, which resulted in a failure of the right main landing gear. Contributing to the accident was the failure of maintenance personnel to follow the aircraft manufacturer’s maintenance procedures.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…NTSB ERA25LA295Accident · No injuriesClass 4 · LimitedFinal reportCessna 195 · Memphis, TNFailure of the left main landing gear due to the loss of the protective paint coating and a change in the local surface finish from impermissible grinding, which resulted in fatigue cracking.NTSB ANC25LA059Accident · No injuriesClass 4 · LimitedFinal reportCessna 170B · Denali Park, AKThe failure of the left main landing gear spring due to a fatigue fracture during landing on uneven terrain.NTSB ERA25LA238Accident · No injuriesClass 3 · LimitedFinal reportCessna 310 · Fayetteville, TNThe pilot’s decision to operate the airplane with known discrepancies.NTSB ERA25FA230Accident · 2 fatalClass 3 · FieldFinal reportMooney M20F · Beverly, MAThe pilot’s failure to maintain control of the airplane while maneuvering to return to the airport which resulted in an aerodynamic stall. Contributing to the accident was the improperly installed No. 2 cylinder bottom spark plug by maintenance personnel,…NTSB ERA25LA223Accident · No injuriesClass 4 · LimitedFinal reportPiper PA22 · Hebron, OHThe airplane owner and pilot’s intentional allowance of unapproved maintenance and maintenance personnel’s failure to adequately maintain or service the brake system, which resulted in a total loss of brake pressure.NTSB ERA25LA215Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA32-300 · Branford, CTMaintenance personnel's improper installation and inspection of the crankshaft gear bolt during major overhaul, which resulted in the crankshaft gear disengaging from the accessory gears which led to a total loss of engine power.NTSB ERA25LA204Accident · Minor injuriesClass 3 · LimitedFinal reportEurocopter Deutschland MBB-BK 117 C-1 · Fort Washington, PAMaintenance personnel’s failure to identify and replace damaged rivet nuts at the air conditioning louver assembly, which resulted in the separation of the louver assembly from the helicopter, the louver assembly’s impact with the tail rotor, and subsequent…NTSB ERA25LA198Accident · Serious injuriesClass 3 · LimitedFinal reportDiamond Aircraft Ind DA 40 NG · Sanford, NCThe mechanic’s re-use of worm drive clamps, which resulted in a separation of the turbocharger air discharge duct and a partial loss of engine power during initial climb.NTSB CEN25LA168Accident · No injuriesClass 3 · LimitedFinal reportCessna 172N · Longmont, COThe disconnected throttle control that resulted in a loss of engine power due to improper maintenance.NTSB WPR25FA146Accident · 1 fatalClass 3 · FieldFinal reportCessna 177RG · Grass Valley, CAAn improperly tightened B-nut fitting at the fuel flow divider, which resulted in a fuel leak and loss of engine power due to fuel starvation, and the inadequate maintenance inspection, which failed to detect and correct the discrepancy.NTSB CEN25LA165Accident · No injuriesClass 3 · LimitedFinal reportCessna T206 · Natchez, MSMaintenance personnel’s improper maintenance, which resulted in a loss of engine power due to fuel starvation as the result of a loose fuel line B-nut. Contributing to the accident was an inadequate 100-hour inspection performed after the recent maintenance.NTSB ANC25LA028Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-28-140 · Royal Kunia, HIImproper alteration of the crankshaft propeller flange at an unknown time, which resulted in an in-flight separation of the propeller assembly.NTSB ANC25LA030Accident · No injuriesClass 3 · LimitedFinal reportCessna A185F · Skwentna, AKMaintenance personnel’s reuse of worn hardware during the installation of the landing gear assembly and the hardware’s failure and subsequent separation of the gear leg from the landing gear box assembly during taxi.NTSB ERA25LA123Accident · No injuriesClass 4 · LimitedFinal reportCessna 172C · Argyle, NYThe mechanic’s incorrect installation of the oil temperature gauge probe in the oil filter adapter and failure to test run the engine for oil leaks after the installation, which resulted in a total loss of oil and the pilot’s decision to perform a…NTSB ERA25LA122Accident · No injuriesClass 4 · LimitedFinal reportAllyn Kaste Rans S-19 (KIT) · Doylestown, PAThe pilot’s inadequate maintenance and preflight inspection.NTSB CEN25LA093Accident · Minor injuriesClass 3 · LimitedFinal reportRobinson Helicopter R22 Beta · Spearman, TXImproperly torqued intake manifold bolts that allowed unmetered air to enter the engine, resulting in an overly lean fuel-air mixture, eventual failure of the No. 3 cylinder intake valve, and a total loss of engine power.NTSB CEN25LA077Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-28-181 · Addison, TXA partial loss of engine power during takeoff due to the partial blockage of the fuel diaphragm metering stem and the No. 1 cylinder fuel injector nozzle. Contributing to the accident was maintenance that allowed the introduction of debris that resulted in…NTSB ERA25LA091Accident · No injuriesClass 3 · LimitedFinal reportHelio HT-295 · Marion, OHThe failure of the right main landing gear spring due to intergranular stress-corrosion cracking that progressed into fatigue. Contributing to the accident was the improper rework of the spring at an undetermined time.NTSB CEN25FA056Accident · Serious injuriesClass 3 · FieldFinal reportZenith Zodiac CH601 · Columbia, ILThe pilot’s failure to secure the engine oil filter following maintenance, which resulted in oil starvation, a total loss of engine power, and impact with terrain.NTSB CEN25LA053Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-28R-200 · Boscobel, WIThe ice obstruction of the engine oil breather tube and alternate air outlet, which resulted in a failure of the crankcase oil seal and loss of engine oil. Contributing to the accident was the incorrect engine oil breather tube installed in the airplane by…NTSB CEN25LA029Accident · Minor injuriesClass 3 · LimitedFinal reportCub Crafters Carbon CUB · Ogallala, NEThe improper installation of the elevator control cable hardware, which resulted in the separation of the elevator control cable and a loss of pitch control in flight.NTSB CEN25LA018Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-32R-301 · Van, TXThe mechanic’s improper maintenance of the engine’s air induction scat duct, which collapsed during the flight and resulted in a loss of engine power.NTSB CEN25LA013Accident · Minor injuriesClass 3 · LimitedFinal reportRotorway Exec · Plymouth, INA loss of control due to the failed forward tail rotor belt as a result of the owner’s failure to follow the helicopter manufacturer’s tail rotor belt replacement recommendations.NTSB CEN24LA378Accident · No injuriesClass 3 · LimitedFinal reportPiper PA32 · Caro, MIA total loss of engine power due to maintenance personnel’s failure to properly tighten the fuel supply line B-nut at the fuel servo.NTSB ANC24FA092Accident · 1 fatalClass 3 · FieldFinal reportJon Bergstedt JP Flyer · Wasilla, AKThe installation of an improperly sized fuel line that did not allow for adequate fuel flow to the engine, resulting in a partial loss of engine power and collision with trees.NTSB ERA24LA375Accident · No injuriesClass 3 · LimitedFinal reportAir Tractor AT-802 · Hickory Valley, TNA partial loss of engine power due to a leak in the fuel control unit bellows, which resulted in the fuel valve moving to minimum fuel flow.NTSB CEN24LA337Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-28-140 · East Troy, WIThe pilot/mechanic’s improper torquing of the fuel hose fitting while replacing the fuel pump, which allowed air to enter the fuel system and resulted in a loss of engine power during initial climb. Contributing to the accident was the pilot/mechanic’s…NTSB ANC24LA077Accident · No injuriesClass 3 · LimitedFinal reportRobinson R44 · Honolulu, HIA failure of the flex plate yoke flange assembly due to incorrectly torqued bolts. Contributing was the maintenance personnel’s inadequate inspection of the tail rotor flex plate assembly.NTSB DCA24LA293Accident · No injuriesClass 4 · LimitedFinal reportBoeing 747-4HQF · Istanbul, TürkiyeThe fatigue failure of multiple hinge ribs associated with the right outboard aileron, which resulted in abnormal aileron movement and airframe vibration. Contributing to the failure was the mis-rigged condition of the right outboard aileron, which increased…NTSB ERA24LA357Accident · No injuriesClass 4 · LimitedFinal reportCessna 172 · Elkwood, VAThe pilot’s failure to correctly reinstall the airplane’s left seat, resulting in the movement of the seat during the takeoff roll, and the subsequent loss of control and runway excursion.NTSB CEN24LA317Accident · No injuriesClass 3 · LimitedFinal reportVans RV8 · Guthrie, OKA loss of engine power due to the separation and ingestion of an air filter retaining bracket into the engine cylinder.NTSB WPR24LA275Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-30 · Concord, CAThe failure of the main landing gear to extend and lock for reasons that could not be determined based on the available information. Contributing to the accident was a mechanical failure of the manual landing gear release mechanism due to inadequate clearance…NTSB WPR24LA268Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-34-220T · Minden, NVThe pilot’s improper preflight inspection of the stabilator trim position, which resulted in a porpoised landing. Contributing to the accident was the maintenance personnel’s improper maintenance of the stabilator trim shaft.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 ERA24LA330Accident · No injuriesClass 3 · LimitedFinal reportRaytheon A36 · Naples, FLContamination of the airplane’s fuel system with debris, which resulted in restricted fuel flow through multiple fuel injectors and the subsequent partial loss of engine power.NTSB CEN24LA286Accident · No injuriesClass 3 · LimitedFinal reportPiper PA46 · Radisson, WIThe non-certificated mechanic’s failure to properly tighten and torque the fuel system pressure test port cap, which resulted in a total loss of engine power, and a subsequent forced landing.NTSB WPR24LA260Accident · No injuriesClass 3 · LimitedFinal reportKitfox Series V · La Grande, ORSeparation of the propeller blades from progressive damage at the blade roots due to overtightening of the hub bolts.NTSB CEN24LA271Accident · Serious injuriesClass 3 · LimitedFinal reportMcdonnell Douglas Helicopter 600N · Eagle Lake, TXThe operator’s improper installation of the fuel system, which resulted in fuel starvation, a loss of engine power, and impact with terrain.NTSB WPR24LA248Accident · No injuriesClass 3 · LimitedFinal reportCessna 150M · Ritzville, WAMaintenance personnel’s improper installation of the No. 2 cylinder exhaust valve, which allowed the valve to drop into the cylinder and resulted in a total loss of engine power.NTSB ERA24LA302Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-32RT-300T · Myerstown, PAThe failure of maintenance personnel to properly secure a B-nut on the No. 5 cylinder fuel injector line, resulting in a fuel leak and engine fire.NTSB ERA24LA279Accident · Serious injuriesClass 3 · LimitedFinal reportAlexander S Rolinski Aventura II · DeLand, FLImproper installation of the electric-driven fuel pump inlet hoses, which resulted in a hose failure and subsequent loss of engine power due to fuel starvation.NTSB CEN24LA236Accident · No injuriesClass 3 · LimitedFinal reportCirrus Design SR22T · Boerne, TXMaintenance personnel’s inadequate adjustment of fuel flow, which resulted in an excessively rich mixture, a rough-running engine, and a subsequent partial loss of engine power.NTSB WPR24LA205Accident · Minor injuriesClass 3 · LimitedFinal reportReplica PA-12 Replica · Douglas, WYA loss of power due to fuel exhaustion as a result of the pilot’s failure to calibrate the fuel flow indicator.NTSB ERA24LA271Accident · No injuriesClass 3 · LimitedFinal reportCessna 172 · Hernando, FLThe improper installation of a cylinder rocker stud by maintenance personnel, which resulted in a partial loss of engine power and subsequent forced landing.NTSB WPR24LA210Accident · No injuriesClass 3 · LimitedFinal reportLancair LC42-550FG · Humboldt Bay, CAMaintenance personnel’s incorrect installation of an engine rocker cover gasket, which resulted in oil exhaustion and subsequent loss of engine power during the initial climb.