# NTSB investigations: Equipment manufacture 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. ## Latest cases - [NTSB CEN25LA117](https://openairdocs.org/ntsb/CEN25LA117.md): Vans RV-7A · Plainview, TX · Accident · No injuries · Class 3 · Limited · Final report · Mar 10, 2025 · N923ZA · Substantial damage > The improper machining of the propeller blade bearing seat, which resulted in an inflight propeller blade fatigue failure. Contributing to the accident was the improper machining of the propeller hub and propeller blade root and machining surface quality… - [NTSB CEN25LA043](https://openairdocs.org/ntsb/CEN25LA043.md): Pitts S1E · Seguin, TX · Accident · No injuries · Class 3 · Limited · Final report · Nov 17, 2024 · N52B · Substantial damage > The improper construction of the rudder cable assembly by the airplane builder, which resulted in the fatigue failure of the left rudder cable during the landing roll and the pilot’s subsequent inability to maintain directional control. - [NTSB ERA24LA392](https://openairdocs.org/ntsb/ERA24LA392.md): Piper PA28 · LaGrange, GA · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 23, 2024 · N4298V · Substantial damage > Improper manufacture of a cylinder exhaust valve guide by the engine manufacturer, which resulted in a stuck exhaust valve and a partial loss of engine power during initial climb. - [NTSB CEN24FA218](https://openairdocs.org/ntsb/CEN24FA218.md): Cessna 172 · Gainesville, TX · Accident · 1 fatal · Class 3 · Field · Final report · Jun 12, 2024 · N656MA · Substantial damage > The fuel pump manufacturer’s improper torquing of screws on the engine-driven fuel pump, which resulted in a disruption in the fuel system and a loss of engine power on initial climb. - [NTSB CEN24LA121](https://openairdocs.org/ntsb/CEN24LA121.md): Piper PA-28-181 · Watertown, SD · Accident · No injuries · Class 3 · Limited · Final report · Feb 25, 2024 · N38696 · Substantial damage > The stuck No. 2 cylinder exhaust valve, which resulted in a partial loss of engine power and a forced landing due to an undersized exhaust valve guide. Contributing to the accident were the improper manufacture of the engine cylinders, and the operation of… - [NTSB ERA24LA066](https://openairdocs.org/ntsb/ERA24LA066.md): Diamond Aircraft Ind DA 40 NG · Asheville, NC · Accident · Serious injuries · Class 3 · Limited · Final report · Dec 15, 2023 · N907L · Substantial damage > Fatigue failure of the No. 4 inner main bearing cap screw and connecting rod bolts, which resulted in a total loss of engine power. Contributing to the failure were the low material strength of the inner main bearing cap screw and the increased loads on the… - [NTSB WPR24FA053](https://openairdocs.org/ntsb/WPR24FA053.md): Beauchamp Norm Kitfox · Eloy, AZ · Accident · 1 fatal · Class 3 · Field · Final report · Dec 8, 2023 · N66180 · Destroyed > The separation of a propeller blade during the initial climb due to insufficient blade retention forces. Contributing to the accident was the propeller blade retention design, manufacturing defects that prevented the propeller from achieving adequate grip… - [NTSB ENG24FA003](https://openairdocs.org/ntsb/ENG24FA003.md): Boeing 767-300F · Memphis, TN · Incident · No injuries · Class 3 · Field · Final report · Oct 18, 2023 · N287FE · Minor damage > A high-pressure fuel leak from a gap in the bolted flange interface between the main fuel pump’s fuel crossover supply tube and the hydromechanical unit idler adapter pad, which resulted in the crossover tube flange bolts partially pulling out and allowing… - [NTSB WPR23LA270](https://openairdocs.org/ntsb/WPR23LA270.md): Sling Sling LSA · Palm Springs, CA · Accident · No injuries · Class 3 · Limited · Final report · Jul 11, 2023 · N294JY · Substantial damage > Failure of the landing gear strut during takeoff due to a preexisting cracks that were caused by a manufacturing anomaly during the composite fiber layup process. - [NTSB ERA23LA293](https://openairdocs.org/ntsb/ERA23LA293.md): Hughes 369D · Waldorf, MD · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 9, 2023 · N5027P · Substantial damage > Fatigue failure of the overrunning clutch outer race and a subsequent inflight loss of power due to abnormal bending loads as a result of improper reassembly of the clutch subassembly following maintenance and the presence of microcracks on the clutch’s outer… - [NTSB WPR22LA357](https://openairdocs.org/ntsb/WPR22LA357.md): Vashon Ranger R7 · Glendale, AZ · Accident · No injuries · Class 3 · Limited · Final report · Sep 27, 2022 · N151VR · Substantial damage > Failure of the landing gear due to material deficiencies that reduced the strength of the landing gear. - [NTSB CEN22LA430](https://openairdocs.org/ntsb/CEN22LA430.md): Agusta AW139 · Houma, LA · Accident · No injuries · Class 3 · Limited · Final report · Sep 24, 2022 · N811TA · Substantial damage > The inflight loss of collective control of the helicopter due to thermal damage of a collective control torque tube that abraded with misrouted electrical wiring, which resulted in an electrical short and inflight fire. Contributing to the accident were the… - [NTSB ENG21LA011](https://openairdocs.org/ntsb/ENG21LA011.md): Cessna 501 · Opa Locka, FL · Incident · No injuries · Class 3 · Limited · Final report · Dec 31, 2020 · N75TL · Minor damage > An uncontained left engine failure caused by a low cycle fatigue crack that originated from a manufacturing machining groove on the high pressure compressor impeller aft face. Contributing to the incident was service bulletin borescope inspection criteria… - [NTSB ENG19IA008](https://openairdocs.org/ntsb/ENG19IA008.md): Airbus A220 · Busan, South Korea · Incident · Class 3 · Incident · Final report · Dec 26, 2018 · HL8314 · No damage > The manufacturer’s inadequate cleaning of the crucible before melting the nickel alloy used in casting the low pressure turbine stage 3 blades that resulted in a casting anomaly from where an intergranular crack occurred became the origin of a fatigue crack… - [NTSB ANC18LA018](https://openairdocs.org/ntsb/ANC18LA018.md): Costruzioni Aeronautiche Tecna P2006 · Lynchburg, VA · Accident · No injuries · Class 2 · Limited · Final report · Jan 1, 2018 · N594MA · Substantial damage > The failure of the left main landing gear assembly due to a fatigue fracture along the inside circumferential weld on the trailing arm’s attachment flange, which resulted from the manufacturer’s inadequate welding of the trailing arm connecting the lower arm… - [NTSB ANC18LA008](https://openairdocs.org/ntsb/ANC18LA008.md): Cloud Jeffrey Ferrell Long EZ · Eufaula, AL · Accident · No injuries · Limited investigation · Final report · Nov 11, 2017 · N754T · Substantial damage > The in-flight separation of a portion of the propeller, which subsequently penetrated the right rudder, as a result of the failure of the bond line between two of the propeller’s wood layers. Contributing to the failure of the propeller was the manufacturer’s… - [NTSB DCA17FA021](https://openairdocs.org/ntsb/DCA17FA021.md): Boeing 767 · Chicago, IL · Accident · Serious injuries · Class 1 · Field · Final report · Oct 28, 2016 · N345AN · Substantial damage > The failure of the high-pressure turbine (HPT) stage 2 disk, which severed the main engine fuel feed line and breached the right main wing fuel tank, releasing fuel that resulted in a fire on the right side of the airplane during the takeoff roll. The HPT… - [NTSB CEN16LA401](https://openairdocs.org/ntsb/CEN16LA401.md): Agustawestland Philadelphia AW139 · Galliano, LA · Accident · No injuries · Limited investigation · Final report · Apr 7, 2016 · N639NA · Substantial damage > The fatigue failure of a tail rotor blade erosion shield extension, which resulted in in-flight damage to a main rotor blade. - [NTSB CEN15LA238](https://openairdocs.org/ntsb/CEN15LA238.md): Piper PA-25-235 · Omega, OK · Accident · No injuries · Limited investigation · Final report · May 11, 2015 · N7279Z · Substantial damage > Improper base metal preparation or contamination of the No. 5 cylinder wall before it was coated, which resulted in the coating peeling off of the cylinder wall and contaminating the engine oil and the subsequent partial loss of engine power. - [NTSB CEN15FA126](https://openairdocs.org/ntsb/CEN15FA126.md): Enstrom 280FX · Erie, CO · Accident · 2 fatal · Field investigation · Final report · Jan 26, 2015 · N86235 · Destroyed > An in-flight failure of the helicopter's #2 main rotor spindle due to undetected fatigue cracking, which resulted in an in-flight breakup. Contributing to failure were the nonconforming thread root radius of the spindle and the manufacturer's failure to… - [NTSB ENG14IA028](https://openairdocs.org/ntsb/ENG14IA028.md): Airbus A320 232 · Long Beach, CA · Incident · No injuries · Incident investigation · Final report · Sep 18, 2014 · N656JB · Minor damage > The probable cause of the engine failure and subsequent undercowl engine fire was due to the fatigue fracture of a high pressure turbine stage 2 disk blade retaining lug that released two blades which impacted the low pressure turbine case causing a fuel line… - [NTSB ERA14LA202](https://openairdocs.org/ntsb/ERA14LA202.md): Oconnor Paul A Ultimate Aero 10-200 · Saint Albans, VT · Accident · No injuries · Limited investigation · Final report · Apr 18, 2014 · N827D · Destroyed > The propeller blade’s failure due to fatigue cracks that initiated from pitch change pin attachment holes that had been drilled too deep during manufacture. - [NTSB CEN13LA225](https://openairdocs.org/ntsb/CEN13LA225.md): Atkins ACRO-SPORT I · Midland, LA · Accident · Minor injuries · Limited investigation · Final report · Apr 12, 2013 · N5897 · Substantial damage > The failure of the left elevator torque tube due to poor quality welds by the manufacturer, which resulted in the loss of pitch control. - [NTSB WPR13IA144](https://openairdocs.org/ntsb/WPR13IA144.md): Bombardier DHC-8-402 · Danville, CA · Incident · No injuries · Incident investigation · Final report · Mar 5, 2013 · N417QX · Minor damage > The failure and separation of a section of the No. 2 engine's combustion chamber's small exit duct (SED), which created an airflow disruption that led to an engine surge and subsequent fire. Contributing to the accident was the insufficient weld penetration… - [NTSB CEN13IA024](https://openairdocs.org/ntsb/CEN13IA024.md): Flight Design Ctls · Elyria, OH · Incident · No injuries · Incident investigation · Final report · Oct 17, 2012 · N21ZA · Minor damage > The manufacturing defects in the main landing gear leg, which resulted in its eventual failure. - [NTSB CEN12LA676](https://openairdocs.org/ntsb/CEN12LA676.md): Flight Design Ctls · Elyria, OH · Accident · No injuries · Limited investigation · Final report · Jul 20, 2012 · N21ZA · Substantial damage > The pilot’s misjudged landing flare, which resulted in a hard landing. - [NTSB ENG12IA004](https://openairdocs.org/ntsb/ENG12IA004.md): Bombardier CL600 2C10 · Atlanta, GA · Incident · No injuries · Incident investigation · Final report · Oct 23, 2011 · N751EV · No damage > The Start Operability Bleed Valve (OBV) fuel return adapter-fitting fractured and separated in cyclic fatigue, which allowed fuel to spill onto a hot engine case that ignited the undercowl fire. The OBV fuel adapter-fitting was dropped and the damage reduced… - [NTSB ERA12FA023](https://openairdocs.org/ntsb/ERA12FA023.md): Socata TBM 700 · Hollywood, FL · Accident · Minor injuries · Field investigation · Final report · Oct 12, 2011 · N37SV · Substantial damage > The pilot’s failure to terminate the flight after observing multiple conflicting errors associated with the inaccurate right fuel quantity indication. Contributing to the accident were the total loss of engine power due to fuel starvation from the right tank,… - [NTSB ENG11IA032](https://openairdocs.org/ntsb/ENG11IA032.md): Dehavilland DHC-6-300 · Peach Springs, AZ · Incident · No injuries · Incident investigation · Final report · May 21, 2011 · N178GC · No damage > A quality control failure in the Sungear, Inc. manufacturing and quality control process allowed sungears with surface finishes of the root fillet radius of the spline that did not conform to the drawing specifications to be released. The surface finish… - [NTSB WPR11FA158](https://openairdocs.org/ntsb/WPR11FA158.md): Cessna 208B · Bakersfield, CA · Accident · No injuries · Field investigation · Final report · Mar 10, 2011 · N930FE · Substantial damage > The malfunction of a master brake cylinder, which resulted in a loss of braking action and subsequent loss of directional control and collision with three vehicles during taxi. Contributing to the accident was the inappropriate design and manufacture of the… - [NTSB DCA11IA015](https://openairdocs.org/ntsb/DCA11IA015.md): Boeing 757-223 · Jackson Hole, WY · Incident · No injuries · Class 1 · Incident · Final report · Dec 29, 2010 · N668AA · No damage > a manufacturing defect in a clutch mechanism that prevented the speedbrakes from automatically deploying after touchdown, and the captain’s failure to monitor and extend the speedbrakes manually. Also causal was the failure of the thrust reversers to deploy… - [NTSB DCA11FA004](https://openairdocs.org/ntsb/DCA11FA004.md): Boeing 757-223 · Miami, FL · Accident · No injuries · Field investigation · Final report · Oct 27, 2010 · N626AA · Substantial damage > Fatigue failure of the fuselage crown skin due to incorrect manufacturing of the crown skin panel that resulted in a skin thickness less than the manufacturer-specified thickness. - [NTSB ERA10FA409](https://openairdocs.org/ntsb/ERA10FA409.md): Piper PA-32R-301 · Washington, GA · Accident · 1 fatal · Field investigation · Final report · Aug 10, 2010 · N220ST · Substantial damage > The manufacturer's inadequate quality control and improper manufacture of the fuel servo diaphragm assembly, which resulted in fatigue cracking of the hub stud and subsequent loss of engine power due to fuel starvation. - [NTSB ERA10LA370](https://openairdocs.org/ntsb/ERA10LA370.md): Piper PA-28R-200 · New Bern, NC · Accident · No injuries · Limited investigation · Final report · Jul 20, 2010 · N8900E · Substantial damage > Inadequate quality control at the fuel servo overhaul facility, which resulted in contamination of the fuel servo and a subsequent loss of engine power due to fuel starvation. - [NTSB SEA08IA217](https://openairdocs.org/ntsb/SEA08IA217.md): Diamond DA 40 · San Carlos, CA · Incident · No injuries · Incident investigation · Final report · Sep 13, 2008 · N419JS · Minor damage > The improper assembly of the governor during manufacture. - [NTSB DEN08FA140](https://openairdocs.org/ntsb/DEN08FA140.md): Aircraft Mfg & Dev. CH601XLi · Farmersville, TX · Accident · Serious injuries · Field investigation · Final report · Aug 14, 2008 · N451BB · Substantial damage > The inadvertent tail stall and subsequent loss of airplane control as a result of the open canopy. Contributing to the accident was the inadequate emergency procedures provided by the airplane manufacturer and the inadequate design of the canopy latching… ## 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", '04013010')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-findings/04013010/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.