# NTSB investigations: Modification/alteration 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 2 · 69 cases ## Latest cases - [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 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 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 WPR24LA148](https://openairdocs.org/ntsb/WPR24LA148.md): Kjelsrud Gary Kitfox · Powell, WY · Accident · No injuries · Class 3 · Limited · Final report · May 10, 2024 · N605GK · Substantial damage > The pilot’s adjustment of the carburetor to an incorrect setting, which resulted in partial loss of engine power during takeoff. - [NTSB CEN24LA145](https://openairdocs.org/ntsb/CEN24LA145.md): Mooney M20E · Alpine, AR · Accident · Minor injuries · Class 3 · Limited · Final report · Apr 2, 2024 · N86UM · Substantial damage > The improper maintenance of the cabin air and exhaust system which resulted in a cracked exhaust pipe and damaged cabin air tubing, and the subsequent elevated carbon monoxide levels in the cockpit and a forced landing to unsuitable terrain after the pilot… - [NTSB WPR24LA034](https://openairdocs.org/ntsb/WPR24LA034.md): Cessna 310 · Hayden, ID · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 13, 2023 · N86H · Substantial damage > The pilot’s failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle of attack, which resulted in a loss of control and subsequent stall during a precautionary landing. Contributing to the accident was the improper maintenance… - [NTSB DCA23FA339](https://openairdocs.org/ntsb/DCA23FA339.md): Boeing 717-200 · Charlotte, NC · Accident · No injuries · Class 3 · Field · Final report · Jun 28, 2023 · N955AT · Substantial damage > A fatigue fracture of the upper lock link that initiated along scratch features on the lower surface at the parting line of the forged aluminum component. Contributing to the accident was the overhaul facilities noncompliance with Service Bulletin 717-32-002. - [NTSB WPR22LA243](https://openairdocs.org/ntsb/WPR22LA243.md): Mooney M20C · Oxnard, CA · Accident · No injuries · Class 4 · Limited · Final report · Jul 10, 2022 · N6416U · Substantial damage > Fuel starvation due to an inappropriately maintained and modified fuel selector valve. - [NTSB WPR22FA151](https://openairdocs.org/ntsb/WPR22FA151.md): Cessna 208B · Heyburn, ID · Accident · 1 fatal · Class 3 · Field · Final report · Apr 13, 2022 · N928JP · Substantial damage > The pilot’s failure to maintain altitude during an instrument approach, which resulted in a descent below the approach path and impact with a vent stack. Also causal was the failure of the processing plant to correctly paint the vent stacks, which had been… - [NTSB ERA22LA159](https://openairdocs.org/ntsb/ERA22LA159.md): Dwyer Michael D Q · Spring Hill, FL · Accident · No injuries · Class 3 · Limited · Final report · Mar 17, 2022 · N3QP · Destroyed > The pilot’s improper modification of the pull starter motor, which resulted in its failure and the subsequent loss of engine power. - [NTSB ERA22LA080](https://openairdocs.org/ntsb/ERA22LA080.md): Piper PA-12 · Labelle, FL · Accident · Serious injuries · Class 4 · Limited · Final report · Nov 30, 2021 · N3098M · Substantial damage > The pilot’s improper fuel system modification, which resulted in a loss of engine power due to fuel exhaustion. - [NTSB ERA21LA385](https://openairdocs.org/ntsb/ERA21LA385.md): Doan Vernon D W10-WITTMAN Tailwind · Brooksville, FL · Accident · No injuries · Class 4 · Limited · Final report · Sep 29, 2021 · N68TW · Substantial damage > The failure of the nose landing gear retention bolt during taxi which resulted in a loss of control and subsequent impact with the taxiway. - [NTSB WPR21LA172](https://openairdocs.org/ntsb/WPR21LA172.md): Michael J Robbins Searey · Friday Harbor, WA · Accident · No injuries · Class 4 · Limited · Final report · Apr 22, 2021 · N888MJ · Substantial damage > Partial loss of engine power due to the detachment of the throttle cable from the carburetor arm, as a result of the pilot’s inadequate maintenance which resulted in an off-airport landing and impact with vegetation. - [NTSB ERA21LA018](https://openairdocs.org/ntsb/ERA21LA018.md): Zenith Stol CH801 · Apison, TN · Accident · No injuries · Class 4 · Limited · Final report · Oct 12, 2020 · N801TP · Substantial damage > A total loss of engine power due to fuel starvation, as a result of an incorrectly placarded fuel selector. - [NTSB ERA21FA010](https://openairdocs.org/ntsb/ERA21FA010.md): Czech Sport Cruiser · Waterloo, AL · Accident · 1 fatal · Class 3 · Field · Final report · Oct 7, 2020 · N251SC · Substantial damage > The improper configuration of the airplane’s fuel system, which resulted in a total loss of engine power due to fuel starvation following the failure of the electric fuel pump. - [NTSB CEN20LA424](https://openairdocs.org/ntsb/CEN20LA424.md): Kitfox Speedster · Leadville, CO · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 24, 2020 · N525PP · Substantial damage > A partial loss of engine power due to fuel starvation as a result of the pilot’s improper maintenance. - [NTSB CEN20LA173](https://openairdocs.org/ntsb/CEN20LA173.md): Titan Titan Tornado S · Haskell, OK · Accident · Serious injuries · Class 3 · Limited · Final report · May 9, 2020 · N318WH · Substantial damage > The student pilot/builder’s addition of winglets to the stabilator, which resulted in flutter and overstress failure of the stabilator control horn. - [NTSB WPR20LA130](https://openairdocs.org/ntsb/WPR20LA130.md): Bell UH 1H · Mesa, AZ · Accident · 1 fatal · Class 3 · Limited · Final report · Apr 24, 2020 · N3276T · Substantial damage > An in-flight separation of the tail rotor gearbox from the airframe due to fatigue failure of the gearbox attachment studs, resulting in a loss of directional control and subsequent ground impact. Contributing to the accident were 1) the improper application… - [NTSB WPR19TA248](https://openairdocs.org/ntsb/WPR19TA248.md): Hall Kitfox · Nampa, ID · Accident · Minor injuries · Class 3 · Final report · Aug 30, 2019 · N87TJ · Substantial damage > The owner's improper installation of the tailwheel, which resulted in the pilot's inability to maintain directional control during landing as a result of severe tailwheel vibrations. - [NTSB ERA19FA256](https://openairdocs.org/ntsb/ERA19FA256.md): Moriarty Marvin Aventura II · Minneola, FL · Accident · 1 fatal · Class 3 · Field · Final report · Aug 23, 2019 · N9143M · Substantial damage > The pilot’s improper modifications to the airplane’s engine, which resulted in the partial loss of engine power. Contributing to the outcome was the pilot's exceedance of the airplane’s critical angle of attack during an attempted return to the airport… - [NTSB ERA19LA032](https://openairdocs.org/ntsb/ERA19LA032.md): Titan T51 · Valkaria, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Oct 27, 2018 · N154DF · Substantial damage > The partial, then total, loss of engine power due to detonation and associated damage to several pistons as a result of an overly lean fuel-to-air ratio. - [NTSB GAA19CA034](https://openairdocs.org/ntsb/GAA19CA034.md): Just Just Aircraft (Highl · Monroe, WA · Accident · No injuries · Data collection · Final report · Oct 12, 2018 · N488VG · Substantial damage > The pilot's improper engine modification and operation, which resulted in a total loss of engine power due to fuel starvation, and the pilot's failure to maintain an adequate approach path, which resulted in the airplane landing short of the runway. - [NTSB ERA18LA163](https://openairdocs.org/ntsb/ERA18LA163.md): Vans RV4 · Butler, PA · Accident · Minor injuries · Limited investigation · Final report · Jun 7, 2018 · N7765X · Substantial damage > The pilot's improper decision to fly the airplane with a known engine problem and his improper modification of the engine control unit fuel delivery software, which led to the engine running too lean and resulted in a total loss of engine power during climb. - [NTSB ERA18LA135](https://openairdocs.org/ntsb/ERA18LA135.md): Heard Alan E Mosquito XE · Albion, NY · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 24, 2018 · N911CY · Destroyed > The pilot's inadvertent, improper configuration of the engine fuel system, which resulted in an excessively lean air-to-fuel ratio and resulted in a loss of engine power; and the pilot's subsequent failure to maintain main rotor rpm following the loss of… - [NTSB WPR18LA111](https://openairdocs.org/ntsb/WPR18LA111.md): Pflugradt Kitfox · Clatskanie, OR · Accident · No injuries · Limited investigation · Final report · Mar 20, 2018 · N925DP · Substantial damage > A partial loss of engine power due to an improperly secured throttle cable set screw. - [NTSB WPR18LA021](https://openairdocs.org/ntsb/WPR18LA021.md): Metcalfe Robert B Vans RV 6 · Selma, CA · Accident · No injuries · Limited investigation · Final report · Oct 30, 2017 · N88MV · Substantial damage > The pilot’s failure to properly secure an alternator ground cable swage that led to problems with the electrical system and/or electronic engine controls, which resulted in a total loss of engine power. - [NTSB CEN17LA293](https://openairdocs.org/ntsb/CEN17LA293.md): Chapman T-BIRD II · Potosi, MO · Accident · Serious injuries · Limited investigation · Final report · Jul 31, 2017 · N204BC · Substantial damage > The pilot's loss of airplane control during a departure turn for reasons that could not be determined. - [NTSB WPR17LA082](https://openairdocs.org/ntsb/WPR17LA082.md): OTT 601XL-B · The Dalles, OR · Accident · Minor injuries · Limited investigation · Final report · Mar 31, 2017 · N610TT · Substantial damage > A partial loss of engine power due to the reverse bending fatigue failure of the propeller hub bolts, which resulted from the bolts not fitting tightly into the propeller hub holes. Also causal was the pilot's decision to use improper bolts for this type of… - [NTSB ERA17CA129](https://openairdocs.org/ntsb/ERA17CA129.md): Kerns Kenneth H Kens Wingless Wonder · Mount Airy, NC · Accident · Minor injuries · Data collection · Final report · Mar 12, 2017 · N7195R · Substantial damage > The pilot’s improper adjustment of the prerotator motor, which resulted in its failure to disengage and the subsequent loss of aircraft control during takeoff. - [NTSB CEN17LA070](https://openairdocs.org/ntsb/CEN17LA070.md): Aeronca 15AC · Pontiac, MI · Accident · No injuries · Limited investigation · Final report · Dec 23, 2016 · N1337H · Substantial damage > The improper installation of the left wheel brake torque plate by maintenance personnel, which resulted in the separation of the torque plate from the axle endplate and a loss of directional control during landing. - [NTSB CEN17LA030](https://openairdocs.org/ntsb/CEN17LA030.md): Cirrus Design SR22 · Bloomfield, NM · Accident · No injuries · Limited investigation · Final report · Oct 28, 2016 · N234PJ · Substantial damage > Maintenance personnel’s failure to fully torque the fuel port cap, which allowed the cap to back off in flight and interrupted fuel flow to the engine, which resulted in a total loss of engine power. - [NTSB WPR16FA183](https://openairdocs.org/ntsb/WPR16FA183.md): Cessna 182P · Gilbert, AZ · Accident · Serious injuries · Field investigation · Final report · Sep 18, 2016 · N20844 · Destroyed > An inadvertent explosion of pyrotechnics, which were contained in a box that had been installed on the airplane's left main landing gear assembly spring leg which resulted in shrapnel striking the airplane's left wing and breaching the left wing fuel tank,… - [NTSB CEN16LA047](https://openairdocs.org/ntsb/CEN16LA047.md): Eurocopter EC120B · Goshen, IN · Accident · No injuries · Limited investigation · Final report · Nov 16, 2015 · N88HA · Substantial damage > The failure of the Thomas coupling at the interface with the main gear box tail rotor output shaft, which resulted in the helicopter's loss of tail rotor control. - [NTSB CEN15LA421](https://openairdocs.org/ntsb/CEN15LA421.md): Lerch RV6A · Deckerville, MI · Accident · Serious injuries · Limited investigation · Final report · Sep 22, 2015 · N215DG · Substantial damage > The in-flight loss of engine oil after the oil filter separated from the engine adapter assembly because of an incorrect modification of the oil filter adapter assembly, which resulted in a precautionary landing in a field. - [NTSB GAA15CA242](https://openairdocs.org/ntsb/GAA15CA242.md): Cessna 305A · Midlothian, TX · Accident · No injuries · Data collection · Final report · Aug 29, 2015 · N5255G · Substantial damage > The failure of the brake line tubing for the right main landing gear brake, due to a non-standard method used to secure the brake line, which resulted in a loss of control during landing, and a ground loop. - [NTSB WPR15LA228](https://openairdocs.org/ntsb/WPR15LA228.md): Hudson Zodiac CH 601 XLB · Hubbard, OR · Accident · No injuries · Limited investigation · Final report · Aug 2, 2015 · N234S · Substantial damage > A severe propeller vibration due to the pilot's improper installation of the propeller spacer assembly, which necessitated an engine shutdown, an off-airport landing, and a collision with a sprinkler system. - [NTSB ERA15IA198](https://openairdocs.org/ntsb/ERA15IA198.md): Dassault-Breguet Mystere Falcon 900 · Orlando, FL · Incident · No injuries · Class 2 · Incident · Final report · Apr 16, 2015 · N610RL · Minor damage > Unknown maintenance personnel’s inadequate securing of a wiring bundle during a maintenance, repair, or modification event, which led to chafing of the wiring bundle, an electrical short and arcing, and a subsequent in-flight fire. - [NTSB WPR15LA067](https://openairdocs.org/ntsb/WPR15LA067.md): Farthing James W II Beaver · Perris, CA · Accident · Serious injuries · Limited investigation · Final report · Dec 21, 2014 · N105JF · Substantial damage > The partial loss of engine power during takeoff due to an improperly configured carburetor and fuel supply system. Contributing to the accident was the pilot's loss of airplane control during the off-field landing, which resulted in an aerodynamic stall. - [NTSB WPR15CA066](https://openairdocs.org/ntsb/WPR15CA066.md): Ferdon Thorp T 18 · San Rafael, CA · Accident · No injuries · Data collection · Final report · Dec 20, 2014 · N25VP · Substantial damage > The pilot's delayed decision to abort the takeoff. Contributing to the accident are an inadequate modification to the seat position, and the pilot's failure to check flight controls for freedom and correct movement. - [NTSB ERA14FA350](https://openairdocs.org/ntsb/ERA14FA350.md): Wilderoder Great Lakes 2TIA · Lillian, AL · Accident · 2 fatal · Field investigation · Final report · Jul 23, 2014 · N47149 · Substantial damage > A loss of engine power due to an inoperative magneto and possible carburetor ice, which resulted in a forced landing into unsuitable terrain. Contributing to the accident was an inadequate magneto overhaul by unknown personnel and the modification to the… - [NTSB ENG14IA019](https://openairdocs.org/ntsb/ENG14IA019.md): Boeing 767 332 · Los Angeles, CA · Incident · No injuries · Incident investigation · Final report · Jul 11, 2014 · N139DL · Minor damage > The 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 WPR14LA225](https://openairdocs.org/ntsb/WPR14LA225.md): Emery Mark Rotorway 162F · Merced, CA · Accident · No injuries · Limited investigation · Final report · Jun 4, 2014 · N78291 · Destroyed > The helicopter pilot/owner's decision to install a belt type not recommended by the kit manufacturer in the tail rotor drive system using the incorrect tension values, which led to the belt’s in-flight failure and the subsequent loss of tail rotor drive… - [NTSB WPR14FA135](https://openairdocs.org/ntsb/WPR14FA135.md): Evolution Trikes Revo · Kekaha, HI · Accident · 2 fatal · Field investigation · Final report · Mar 11, 2014 · N98EV · Substantial damage > The pilot's reconfiguration of the fuel venting system, which resulted in a loss of engine power and subsequent loss of aircraft control. - [NTSB ERA14LA099](https://openairdocs.org/ntsb/ERA14LA099.md): Bell 47D1 · Pell City, AL · Accident · Minor injuries · Limited investigation · Final report · Jan 21, 2014 · N93067 · Substantial damage > The pilot’s use of an improper clutch engagement procedure, which resulted in clutch glazing, slippage, and, ultimately, the in-flight disengagement of the clutch and a loss of rotor rpm. Contributing to the accident were the installation of a light-weight… - [NTSB WPR14LA031](https://openairdocs.org/ntsb/WPR14LA031.md): Piper PA 28-180 · Big Creek, CA · Accident · Serious injuries · Limited investigation · Final report · Oct 24, 2013 · N30865 · Substantial damage > The loss of engine power due to the improper installation of an oil pressure sending unit by the pilot, who was not a certificated mechanic, which resulted in a forced landing in mountainous terrain. - [NTSB WPR13LA290](https://openairdocs.org/ntsb/WPR13LA290.md): Mcdonnell Douglas Helicopter 369E · Casa Grande, AZ · Accident · Minor injuries · Limited investigation · Final report · Jun 25, 2013 · N34CT · Substantial damage > The total loss of engine power due to the ingestion of a foreign object and maintenance personnel's failure to remove shop rags before completing the installation of the air inlet barrier system. - [NTSB WPR13LA272](https://openairdocs.org/ntsb/WPR13LA272.md): Cessna 175 · Needles, CA · Accident · Serious injuries · Limited investigation · Final report · Jun 16, 2013 · N9370B · Substantial damage > A loss of engine power due to fuel exhaustion as a result of the pilot’s inadequate fuel planning. Contributing to the severity of the front passenger’s injuries was the pilot’s decision to depart with more passengers than available seats, which resulted in… - [NTSB WPR13LA216](https://openairdocs.org/ntsb/WPR13LA216.md): Rans S-17 · Fontana, CA · Accident · Minor injuries · Limited investigation · Final report · May 4, 2013 · N6171R · Substantial damage > A loss of engine power due to improper construction and inadequate maintenance of the fuel system and engine. Contributing to the accident was the airplane’s inadvertent contact with an unseen guy wire during the landing flare. - [NTSB ERA13LA199](https://openairdocs.org/ntsb/ERA13LA199.md): Maxfly Inc/Mckay WM Searey · Polk City, FL · Accident · Minor injuries · Limited investigation · Final report · Apr 11, 2013 · N914WM · Substantial damage > The improper installation of incorrect attachment hardware by maintenance personnel during an undocumented repair, which resulted in an in-flight structural failure and subsequent loss of aircraft control. Contributing to the accident was the covering of the… - [NTSB WPR13FA169](https://openairdocs.org/ntsb/WPR13FA169.md): Mooney M20A · Wikieup, AZ · Accident · 1 fatal · Field investigation · Final report · Mar 28, 2013 · N6018X · Substantial damage > The manufacture and installation of a nonstandard part by unknown maintenance personnel to compensate for a bent, misaligned crankshaft propeller flange, which resulted in the improper clearance of the bearings on the crankshaft journal, a loss of oil… Next page: https://openairdocs.org/ntsb-findings/02062030/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", '02062030')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-findings/02062030/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.