# NTSB investigations, WI: Sys/Comp malf/fail (non-power) 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 CEN26LA231](https://openairdocs.org/ntsb/CEN26LA231.md): Bailey-Moyes Dragonfly · Whitewater, WI · Accident · 1 fatal · Class 3 · Limited · Preliminary report · Jun 23, 2026 · N3849A · No damage > On June 22, 2026, about 1915 central daylight time, a Bailey-Moyes Dragonfly, N3849A, was involved in an accident near Whitewater, Wisconsin. The pilot of the Dragonfly was not injured. The pilot of the hang glider in tow was fatally injured. The tow… - [NTSB CEN25LA287](https://openairdocs.org/ntsb/CEN25LA287.md): Aerotek Pitts S-2A · New Holstein, WI · Accident · No injuries · Class 4 · Limited · Final report · Jul 26, 2025 · N83PS · Substantial damage > The pilot’s loss of direction control during landing due to an unapproved tailwheel assembly and tail spring that resulted in a tailwheel shimmy and a subsequent ground loop. - [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 CEN20LA179](https://openairdocs.org/ntsb/CEN20LA179.md): Cessna P210 · Burlington, WI · Accident · 1 fatal · Class 3 · Limited · Final report · May 15, 2020 · N1JA · Substantial damage > The pilot did not maintain a safe altitude during the visual approach, and subsequently lost control which resulted an impact with trees and terrain. - [NTSB CEN18LA360](https://openairdocs.org/ntsb/CEN18LA360.md): Stearman A75N1(PT17) · Kenosha, WI · Accident · No injuries · Limited investigation · Final report · Aug 31, 2018 · N64604 · Substantial damage > The failed retaining bolt and cracked backing plate, which resulted in a shift of the brake lining to contact the brake drum and a subsequent wheel lock when the brakes were applied. - [NTSB CEN18LA115](https://openairdocs.org/ntsb/CEN18LA115.md): Messerschmitt-Bolkow-Blohm BK 117 B-2 · Sheboygan, WI · Accident · No injuries · Limited investigation · Final report · Mar 5, 2018 · N1174U · Substantial damage > The restricted cyclic control movement for reasons that could not be determined because postaccident examination and testing of the cyclic control system did not reveal any evidence of mechanical malfunctions or failures that would have precluded normal… - [NTSB CEN17FA196](https://openairdocs.org/ntsb/CEN17FA196.md): Piper J3C · Chetek, WI · Accident · 1 fatal · Field investigation · Final report · May 24, 2017 · N35132 · Substantial damage > The pilot's failure to maintain control of the airplane while flying at a low altitude, which resulted in the airplane exceeding the critical angle of attack and a subsequent aerodynamic stall. - [NTSB CEN12CA567](https://openairdocs.org/ntsb/CEN12CA567.md): Fantasy Air Allegro 2000 · Bear Creek, WI · Accident · No injuries · Data collection · Final report · Aug 17, 2012 · N5064E · Substantial damage > A malfunction of the right brake for reasons that could not be determined because of the perishable evidence, which resulted in the pilot’s inability to maintain directional control of the airplane during landing. - [NTSB CEN12IA498](https://openairdocs.org/ntsb/CEN12IA498.md): American Champion 8KCAB · Oshkosh, WI · Incident · No injuries · Incident investigation · Final report · Jul 26, 2012 · N60GK · No damage > The failure of the pilot’s seat bottom frame due to the manufacturer’s improper production, installation, and inspection of that seat bottom, which resulted in a temporary loss of control during an air show performance. - [NTSB CEN12LA133](https://openairdocs.org/ntsb/CEN12LA133.md): Cessna 150J · Denmark, WI · Accident · Serious injuries · Limited investigation · Final report · Jan 12, 2012 · N60676 · Substantial damage > The pilot’s loss of control due to his alcohol impairment. Contributing to the accident was the pilot's decision to fly at night with a known interior lighting malfunction. - [NTSB CEN11CA523](https://openairdocs.org/ntsb/CEN11CA523.md): Cessna 195 · Oshkosh, WI · Accident · No injuries · Data collection · Final report · Jul 28, 2011 · N195SM · Substantial damage > The failure of the left brake which resulted in a ground-loop. - [NTSB CEN11IA379](https://openairdocs.org/ntsb/CEN11IA379.md): Bombardier CL-600-2B19 · Milwaukee, WI · Incident · No injuries · Incident investigation · Final report · Jun 7, 2011 · N866AS · Minor damage > The failure of the right main landing gear (MLG) to extend normally, which resulted from the combination of a slightly worn uplock pin, the operation of the hydraulic pumps below their specified operating pressures, and contamination within the landing gear… - [NTSB CEN11FA193](https://openairdocs.org/ntsb/CEN11FA193.md): Gulfstream Aerospace GV-SP · Appleton, WI · Accident · No injuries · Field investigation · Final report · Feb 14, 2011 · N535GA · Substantial damage > The pilot flying's (PF) decision to land on a shorter-than-recommended runway with a known left hydraulic system failure rather than go around as suggested by the pilot-not-flying, his failure to immediately apply emergency brakes following the detection of… - [NTSB CEN09CA537](https://openairdocs.org/ntsb/CEN09CA537.md): Rewey William M CH 801 · Cottage Grove, WI · Accident · No injuries · Data collection · Final report · Aug 23, 2009 · N171WR · Substantial damage > A total loss of engine power during initial climb due to fuel starvation from a blocked fuel screen that resulted from the pilot/owner's inadequate inspection and maintenance of the fuel system. - [NTSB CEN09LA463](https://openairdocs.org/ntsb/CEN09LA463.md): Pilgrim Samuel W JR RV-6 · Oshkosh, WI · Accident · No injuries · Limited investigation · Final report · Jul 25, 2009 · N56SP · Substantial damage > The failure of the rudder pedal which resulted in the pilot's inability to maintain directional control of the aircraft. - [NTSB CHI08LA272](https://openairdocs.org/ntsb/CHI08LA272.md): Socata TB-20 Trinidad · Cassville, WI · Accident · 1 fatal · Limited investigation · Final report · Sep 3, 2008 · N597TB · Substantial damage > The left seat pilot's failure to maintain control of the airplane during a go-around and the inadvertent in-flight opening of the cabin door for undetermined reasons. Contributing to the accident was the distraction of the door opening. - [NTSB CHI08CA287](https://openairdocs.org/ntsb/CHI08CA287.md): Cessna 172M · Three Lakes, WI · Accident · Minor injuries · Data collection · Final report · Sep 1, 2008 · N12809 · Substantial damage > The pilot's failure to attain sufficient altitude to avoid the trees during initial climb. Contributing to the accident were the pilot's failure to ensure the security of the entrance door before takeoff and the unintentional opening of the door. - [NTSB CHI08CA203](https://openairdocs.org/ntsb/CHI08CA203.md): Enstrom F28F · Amberg, WI · Accident · No injuries · Data collection · Final report · Jul 23, 2008 · N8626E · Substantial damage > The unsuitable terrain encountered by the pilot during a forced landing following a loss of engine power due to a cylinder head separation. Contributing to the accident was the tree. - [NTSB CHI08FA172](https://openairdocs.org/ntsb/CHI08FA172.md): Enstrom Helicopter 480B · Marinette, WI · Accident · No injuries · Field investigation · Final report · Jun 24, 2008 · N480PD · Substantial damage > The pilot inadvertently operating the helicopter at a gross weight greater than its maximum allowable operating weight, and flying the helicopter at an airspeed greater than the never-to-exceed speed for the helicopter’s gross weight condition, resulting in… - [NTSB CHI08CA076](https://openairdocs.org/ntsb/CHI08CA076.md): American AA-1A · Grantsburg, WI · Accident · No injuries · Data collection · Final report · Feb 6, 2008 · N9483L · Substantial damage > The seizure of the left brake due to a buildup of ice between the rotor and brake pad. Contributing to the accident was the snow and slush covered runway, and the snowbank. ## 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."eventStateOrRegion" = 'WI' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '330' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-events/330/sequence?state=WI --- 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.