# NTSB investigations: Maintenance NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. Page 1 of 22 · 1,074 cases ## Latest cases - [NTSB ERA26LA151](https://openairdocs.org/ntsb/ERA26LA151.md): Piper PA-32-260 · Block Island, RI · Accident · Minor injuries · Class 4 · Limited · Final report · Mar 25, 2026 · N7081H · Substantial damage > Maintenance 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 CEN26LA074](https://openairdocs.org/ntsb/CEN26LA074.md): Pitts S1S · Carbondale, IL · Accident · Minor injuries · Class 3 · Limited · Final report · Dec 31, 2025 · N401MS · Substantial damage > A 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 WPR26LA056](https://openairdocs.org/ntsb/WPR26LA056.md): Rotorway Exec · Lake Havasu City, AZ · Accident · No injuries · Class 4 · Limited · Final report · Dec 8, 2025 · C-GBZD · Substantial damage > The pilot’s improper securing hardware installation, which resulted in a loss of throttle control and a loss of engine power. - [NTSB CEN25LA402](https://openairdocs.org/ntsb/CEN25LA402.md): Textron 525C · Baton Rouge, LA · Accident · No injuries · Class 4 · Limited · Final report · Sep 25, 2025 · N361MB · Substantial damage > The 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 CEN25LA401](https://openairdocs.org/ntsb/CEN25LA401.md): CubCrafters CCK-2000 · Thompsonville, MI · Accident · No injuries · Class 3 · Limited · Final report · Sep 7, 2025 · N40DT · Substantial damage > 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. Contributing to the total loss of engine power was the failure of the… - [NTSB ERA25LA295](https://openairdocs.org/ntsb/ERA25LA295.md): Cessna 195 · Memphis, TN · Accident · No injuries · Class 4 · Limited · Final report · Aug 8, 2025 · N1950C · Substantial damage > Failure 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 ANC25LA059](https://openairdocs.org/ntsb/ANC25LA059.md): Cessna 170B · Denali Park, AK · Accident · No injuries · Class 4 · Limited · Final report · Jun 25, 2025 · N2655D · Substantial damage > The failure of the left main landing gear spring due to a fatigue fracture during landing on uneven terrain. - [NTSB ERA25LA238](https://openairdocs.org/ntsb/ERA25LA238.md): Cessna 310 · Fayetteville, TN · Accident · No injuries · Class 3 · Limited · Final report · Jun 24, 2025 · N5045Q · Substantial damage > The pilot’s decision to operate the airplane with known discrepancies. - [NTSB ERA25FA230](https://openairdocs.org/ntsb/ERA25FA230.md): Mooney M20F · Beverly, MA · Accident · 2 fatal · Class 3 · Field · Final report · Jun 19, 2025 · N9573M · Substantial damage > The 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 ERA25LA223](https://openairdocs.org/ntsb/ERA25LA223.md): Piper PA22 · Hebron, OH · Accident · No injuries · Class 4 · Limited · Final report · Jun 7, 2025 · N6804B · Substantial damage > The 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 ERA25LA215](https://openairdocs.org/ntsb/ERA25LA215.md): Piper PA32-300 · Branford, CT · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 1, 2025 · N2242Z · Substantial damage > Maintenance 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 ERA25LA204](https://openairdocs.org/ntsb/ERA25LA204.md): Eurocopter Deutschland MBB-BK 117 C-1 · Fort Washington, PA · Accident · Minor injuries · Class 3 · Limited · Final report · May 19, 2025 · N117NC · Substantial damage > Maintenance 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 ERA25LA198](https://openairdocs.org/ntsb/ERA25LA198.md): Diamond Aircraft Ind DA 40 NG · Sanford, NC · Accident · Serious injuries · Class 3 · Limited · Final report · May 7, 2025 · N499BW · Substantial damage > The 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 CEN25LA168](https://openairdocs.org/ntsb/CEN25LA168.md): Cessna 172N · Longmont, CO · Accident · No injuries · Class 3 · Limited · Final report · May 4, 2025 · N75775 · Substantial damage > The disconnected throttle control that resulted in a loss of engine power due to improper maintenance. - [NTSB WPR25FA146](https://openairdocs.org/ntsb/WPR25FA146.md): Cessna 177RG · Grass Valley, CA · Accident · 1 fatal · Class 3 · Field · Final report · May 1, 2025 · N52156 · Substantial damage > An 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 CEN25LA165](https://openairdocs.org/ntsb/CEN25LA165.md): Cessna T206 · Natchez, MS · Accident · No injuries · Class 3 · Limited · Final report · Mar 27, 2025 · N27DV · Substantial damage > Maintenance 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 ANC25LA028](https://openairdocs.org/ntsb/ANC25LA028.md): Piper PA-28-140 · Royal Kunia, HI · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 27, 2025 · N261FC · Substantial damage > Improper alteration of the crankshaft propeller flange at an unknown time, which resulted in an in-flight separation of the propeller assembly. - [NTSB ANC25LA030](https://openairdocs.org/ntsb/ANC25LA030.md): Cessna A185F · Skwentna, AK · Accident · No injuries · Class 3 · Limited · Final report · Mar 7, 2025 · N1718R · Substantial damage > Maintenance 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 ERA25LA123](https://openairdocs.org/ntsb/ERA25LA123.md): Cessna 172C · Argyle, NY · Accident · No injuries · Class 4 · Limited · Final report · Feb 20, 2025 · N1609Y · Substantial damage > The 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 ERA25LA122](https://openairdocs.org/ntsb/ERA25LA122.md): Allyn Kaste Rans S-19 (KIT) · Doylestown, PA · Accident · No injuries · Class 4 · Limited · Final report · Feb 10, 2025 · N258DK · Substantial damage > The pilot’s inadequate maintenance and preflight inspection. - [NTSB CEN25LA093](https://openairdocs.org/ntsb/CEN25LA093.md): Robinson Helicopter R22 Beta · Spearman, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Feb 7, 2025 · N7191B · Substantial damage > Improperly 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 CEN25LA077](https://openairdocs.org/ntsb/CEN25LA077.md): Piper PA-28-181 · Addison, TX · Accident · No injuries · Class 3 · Limited · Final report · Jan 15, 2025 · N504AF · Substantial damage > A 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 ERA25LA091](https://openairdocs.org/ntsb/ERA25LA091.md): Helio HT-295 · Marion, OH · Accident · No injuries · Class 3 · Limited · Final report · Jan 5, 2025 · N18JC · Substantial damage > The 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 CEN25FA056](https://openairdocs.org/ntsb/CEN25FA056.md): Zenith Zodiac CH601 · Columbia, IL · Accident · Serious injuries · Class 3 · Field · Final report · Dec 8, 2024 · N9853M · Destroyed > The 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 CEN25LA053](https://openairdocs.org/ntsb/CEN25LA053.md): Piper PA-28R-200 · Boscobel, WI · Accident · No injuries · Class 3 · Limited · Final report · Dec 2, 2024 · N41997 · Substantial damage > The 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 CEN25LA029](https://openairdocs.org/ntsb/CEN25LA029.md): Cub Crafters Carbon CUB · Ogallala, NE · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 27, 2024 · N257ST · Destroyed > The 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 CEN25LA018](https://openairdocs.org/ntsb/CEN25LA018.md): Piper PA-32R-301 · Van, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 17, 2024 · N81481 · Substantial damage > The 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 CEN25LA013](https://openairdocs.org/ntsb/CEN25LA013.md): Rotorway Exec · Plymouth, IN · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 11, 2024 · N314AC · Substantial damage > A 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 CEN24LA378](https://openairdocs.org/ntsb/CEN24LA378.md): Piper PA32 · Caro, MI · Accident · No injuries · Class 3 · Limited · Final report · Sep 30, 2024 · N31407 · Substantial damage > A 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 ANC24FA092](https://openairdocs.org/ntsb/ANC24FA092.md): Jon Bergstedt JP Flyer · Wasilla, AK · Accident · 1 fatal · Class 3 · Field · Final report · Sep 14, 2024 · N1202Y · Destroyed > The 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 ERA24LA375](https://openairdocs.org/ntsb/ERA24LA375.md): Air Tractor AT-802 · Hickory Valley, TN · Accident · No injuries · Class 3 · Limited · Final report · Sep 10, 2024 · N802JF · Substantial damage > A 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 CEN24LA337](https://openairdocs.org/ntsb/CEN24LA337.md): Piper PA-28-140 · East Troy, WI · Accident · No injuries · Class 3 · Limited · Final report · Sep 2, 2024 · N32435 · Substantial damage > The 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 ANC24LA077](https://openairdocs.org/ntsb/ANC24LA077.md): Robinson R44 · Honolulu, HI · Accident · No injuries · Class 3 · Limited · Final report · Aug 19, 2024 · N740RH · Substantial damage > A 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 DCA24LA293](https://openairdocs.org/ntsb/DCA24LA293.md): Boeing 747-4HQF · Istanbul, Türkiye · Accident · No injuries · Class 4 · Limited · Final report · Aug 17, 2024 · N782CK · Substantial damage > The 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 ERA24LA357](https://openairdocs.org/ntsb/ERA24LA357.md): Cessna 172 · Elkwood, VA · Accident · No injuries · Class 4 · Limited · Final report · Aug 15, 2024 · N8400X · Substantial damage > The 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 CEN24LA317](https://openairdocs.org/ntsb/CEN24LA317.md): Vans RV8 · Guthrie, OK · Accident · No injuries · Class 3 · Limited · Final report · Aug 15, 2024 · N184DC · Substantial damage > A loss of engine power due to the separation and ingestion of an air filter retaining bracket into the engine cylinder. - [NTSB WPR24LA275](https://openairdocs.org/ntsb/WPR24LA275.md): Piper PA-30 · Concord, CA · Accident · No injuries · Class 3 · Limited · Final report · Aug 9, 2024 · N8458Y · Substantial damage > The 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 WPR24LA268](https://openairdocs.org/ntsb/WPR24LA268.md): Piper PA-34-220T · Minden, NV · Accident · No injuries · Class 3 · Limited · Final report · Aug 5, 2024 · N4145B · Substantial damage > The 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 CEN24LA308](https://openairdocs.org/ntsb/CEN24LA308.md): Cirrus Design SR22T · Tulsa, OK · Incident · No injuries · Class 3 · Limited · Final report · Aug 3, 2024 · N825JC · Substantial damage > The mechanic’s improper installation of the alternator wiring connections, which resulted in electrical arcing and thermal damage to the airplane. - [NTSB ERA24LA330](https://openairdocs.org/ntsb/ERA24LA330.md): Raytheon A36 · Naples, FL · Accident · No injuries · Class 3 · Limited · Final report · Jul 29, 2024 · N934PC · Substantial damage > Contamination 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 CEN24LA286](https://openairdocs.org/ntsb/CEN24LA286.md): Piper PA46 · Radisson, WI · Accident · No injuries · Class 3 · Limited · Final report · Jul 28, 2024 · N4646G · Substantial damage > The 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 WPR24LA260](https://openairdocs.org/ntsb/WPR24LA260.md): Kitfox Series V · La Grande, OR · Accident · No injuries · Class 3 · Limited · Final report · Jul 23, 2024 · N53562 · Substantial damage > Separation of the propeller blades from progressive damage at the blade roots due to overtightening of the hub bolts. - [NTSB CEN24LA271](https://openairdocs.org/ntsb/CEN24LA271.md): Mcdonnell Douglas Helicopter 600N · Eagle Lake, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 16, 2024 · N609RP · Destroyed > The operator’s improper installation of the fuel system, which resulted in fuel starvation, a loss of engine power, and impact with terrain. - [NTSB WPR24LA248](https://openairdocs.org/ntsb/WPR24LA248.md): Cessna 150M · Ritzville, WA · Accident · No injuries · Class 3 · Limited · Final report · Jul 15, 2024 · N714PW · Substantial damage > Maintenance 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 ERA24LA302](https://openairdocs.org/ntsb/ERA24LA302.md): Piper PA-32RT-300T · Myerstown, PA · Accident · No injuries · Class 3 · Limited · Final report · Jul 4, 2024 · N184VA · Substantial damage > The 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 ERA24LA279](https://openairdocs.org/ntsb/ERA24LA279.md): Alexander S Rolinski Aventura II · DeLand, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 26, 2024 · N727TK · Substantial damage > Improper 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 CEN24LA236](https://openairdocs.org/ntsb/CEN24LA236.md): Cirrus Design SR22T · Boerne, TX · Accident · No injuries · Class 3 · Limited · Final report · Jun 23, 2024 · N87AQ · Substantial damage > Maintenance 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 WPR24LA205](https://openairdocs.org/ntsb/WPR24LA205.md): Replica PA-12 Replica · Douglas, WY · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 22, 2024 · N406Z · Substantial damage > A loss of power due to fuel exhaustion as a result of the pilot’s failure to calibrate the fuel flow indicator. - [NTSB ERA24LA271](https://openairdocs.org/ntsb/ERA24LA271.md): Cessna 172 · Hernando, FL · Accident · No injuries · Class 3 · Limited · Final report · Jun 21, 2024 · N734XT · Substantial damage > The improper installation of a cylinder rocker stud by maintenance personnel, which resulted in a partial loss of engine power and subsequent forced landing. - [NTSB WPR24LA210](https://openairdocs.org/ntsb/WPR24LA210.md): Lancair LC42-550FG · Humboldt Bay, CA · Accident · No injuries · Class 3 · Limited · Final report · Jun 20, 2024 · N141PB · Substantial damage > Maintenance 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. Next page: https://openairdocs.org/ntsb-findings/020620/cases.md?page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql 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 ``` This list as a web page: https://openairdocs.org/ntsb-findings/020620/cases --- 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.