# NTSB investigations, WI: Enroute 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 12 · 580 cases ## Latest cases - [NTSB CEN27LA031](https://openairdocs.org/ntsb/CEN27LA031.md): Aeronca 65CA · Hartford, WI · Accident · No injuries · Class 4 · Limited · Investigation open · Oct 24, 2026 · N34402 · Substantial damage - [NTSB CEN27FA016](https://openairdocs.org/ntsb/CEN27FA016.md): Piper PA 46-350P · Reedsburg, WI · Accident · 5 fatal · Class 3 · Field · Investigation open · Oct 14, 2026 · N931TT - [NTSB CEN26LA268](https://openairdocs.org/ntsb/CEN26LA268.md): Kitfox III · Ephraim, WI · Accident · No injuries · Class 3 · Limited · Preliminary report · Jul 27, 2026 · N573TB · Substantial damage > On July 26, 2026, at 1941 central daylight time, an experimental Kitfox III airplane, N573TB, sustained substantial damage when it was involved in an accident near Ephraim, Wisconsin. The private pilot and a passenger were uninjured. The airplane was operated… - [NTSB CEN26LA258](https://openairdocs.org/ntsb/CEN26LA258.md): Vans RV-8A · Mineral Point, WI · Accident · No injuries · Class 3 · Limited · Preliminary report · Jul 17, 2026 · N22SZ · Substantial damage > On July 17, 2026, at 1748 central daylight time, an experimental amateur-built Vans Aircraft Inc RV-8A, N22SZ, sustained substantial damage when it was involved in an accident in Mineral Point, Wisconsin. The commercial pilot was uninjured. The airplane was… - [NTSB CEN26LA208](https://openairdocs.org/ntsb/CEN26LA208.md): American AA-1A · Amery, WI · Accident · Minor injuries · Class 3 · Limited · Preliminary report · May 30, 2026 · N6416L · Substantial damage > On May 30, 2026, about 1113 central daylight time, a Grumman AA-1A airplane, N6416L, was substantially damaged when it was involved in an accident near Amery, Wisconsin. The pilot sustained minor injuries. The airplane was operated as a Title 14 Code of… - [NTSB CEN25LA378](https://openairdocs.org/ntsb/CEN25LA378.md): Cirrus Design SR22T · Racine, WI · Accident · No injuries · Class 4 · Limited · Final report · Sep 11, 2025 · N121JB · Substantial damage > A total loss of engine power for reasons that could not be determined. - [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 CEN24LA356](https://openairdocs.org/ntsb/CEN24LA356.md): Piper PA-12 · Cumberland, WI · Accident · No injuries · Class 3 · Limited · Final report · Sep 12, 2024 · N7878M · Substantial damage > The total loss of engine power due to carburetor icing and the pilot’s delayed use carburetor heat in weather conditions conducive to carburetor icing. - [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 CEN24FA024](https://openairdocs.org/ntsb/CEN24FA024.md): Lancair 320 · Manitowoc, WI · Accident · 1 fatal · Class 3 · Field · Final report · Oct 25, 2023 · N320P · Substantial damage > The pilot’s decision to continue the visual flight rules flight into instrument meteorological conditions and failure to maintain clearance from trees and terrain during an unapproved instrument approach. Contributing to the accident was the pilot’s… - [NTSB CEN24LA012](https://openairdocs.org/ntsb/CEN24LA012.md): Tvap 4 · Franksville, WI · Accident · No injuries · Class 3 · Limited · Final report · Oct 15, 2023 · N42VZ · Substantial damage > The improper installation of the supplemental ignition system, which resulted in a total loss of engine power. - [NTSB CEN23LA329](https://openairdocs.org/ntsb/CEN23LA329.md): Varga 2150A · Green Lake, WI · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 27, 2023 · N5601G · Substantial damage > A loss of engine power due to fuel exhaustion, which resulted from the pilot’s inadequate preflight planning. - [NTSB CEN23LA322](https://openairdocs.org/ntsb/CEN23LA322.md): Ercoupe 415-D · Waupun, WI · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 23, 2023 · N415JC · Substantial damage > The pilot’s decision to take off without correcting a misinstalled fuel cap, which resulted in a loss of engine power due to fuel starvation caused by improper venting of the fuel system. - [NTSB CEN23FA239](https://openairdocs.org/ntsb/CEN23FA239.md): Mooney M20R · Watertown, WI · Accident · 2 fatal · Class 3 · Field · Final report · Jun 14, 2023 · N1025C · Destroyed > The pilot’s loss of control due to spatial disorientation while operating in instrument meteorological conditions. Contributing to the accident was the pilot’s impairment from the prohibited substance; however, the extent of impairment could not be determined. - [NTSB CEN22LA353](https://openairdocs.org/ntsb/CEN22LA353.md): Sonex Sonex · River Falls, WI · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 29, 2022 · N1557S · Substantial damage > The pilot’s improper fuel planning, which resulted in a total loss of engine power due to fuel exhaustion. - [NTSB CEN22LA334](https://openairdocs.org/ntsb/CEN22LA334.md): Van's RV-10 · Beaver Dam, WI · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 22, 2022 · N4400K · Substantial damage > The improperly secured spark plug boot that resulted in smoke in the cockpit and a subsequent off-airport landing. - [NTSB CEN22FA021](https://openairdocs.org/ntsb/CEN22FA021.md): Beech B36TC · Lena, WI · Accident · 1 fatal · Class 3 · Field · Final report · Oct 27, 2021 · N75RM · Substantial damage > Impairment and subsequent incapacitation of the pilot for reasons that could not be determined. The incapacitation resulted in a loss of engine power due to fuel starvation. Likely contributing was pilot hypoxia due to altitude exposure, possibly worsened by… - [NTSB CEN22FA013](https://openairdocs.org/ntsb/CEN22FA013.md): New Glasair Glastar · Waukesha, WI · Accident · 2 fatal · Class 3 · Field · Final report · Oct 12, 2021 · N628RS · Destroyed > The noninstrument-rated pilot’s decision to depart and continue flight into instrument meteorological conditions, which resulted in a loss of control due to spatial disorientation. - [NTSB CEN21FA459](https://openairdocs.org/ntsb/CEN21FA459.md): Rockwell International 690B · Hiles, WI · Accident · 3 fatal · Class 3 · Field · Final report · Sep 28, 2021 · N690LS · Destroyed > The pilot’s failure to maintain adequate airspeed, which caused the airplane to exceed its critical angle of attack and enter an inadvertent stall and spin. - [NTSB CEN21LA343](https://openairdocs.org/ntsb/CEN21LA343.md): Stinson JR. SR · Ripon, WI · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 29, 2021 · N81Y · Substantial damage > A total loss of engine power due to fuel starvation. - [NTSB CEN21LA232](https://openairdocs.org/ntsb/CEN21LA232.md): Cirrus Design SR22 · Whitewater, WI · Accident · No injuries · Class 3 · Limited · Final report · May 16, 2021 · N4144B · Substantial damage > An inflight instrument malfunction for reasons that could not be determined based on available information, which led to the pilot’s decision to activate the airframe parachute system. - [NTSB CEN21LA213](https://openairdocs.org/ntsb/CEN21LA213.md): Beech C23 · Merrill, WI · Accident · Minor injuries · Class 3 · Limited · Final report · May 11, 2021 · N793Y · Substantial damage > The loss of engine power due to tappet failure. - [NTSB CEN20CA275](https://openairdocs.org/ntsb/CEN20CA275.md): Condor Condor · Freedom, WI · Accident · No injuries · Class 4 · Data collection · Final report · Jul 5, 2020 · N3502X · Substantial damage > The pilot's failure to initiate a climb in a timely manner which resulted in contact with wires. - [NTSB CEN19LA290](https://openairdocs.org/ntsb/CEN19LA290.md): Beech V35 · Monroe, WI · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 27, 2019 · N6245V · Substantial damage > A total loss of engine power due to the failure of the Nos. 5 and 6 connecting rods from a lack of oil lubrication for reasons that could not be determined. - [NTSB CEN19CA239](https://openairdocs.org/ntsb/CEN19CA239.md): Cessna 172 · Oshkosh, WI · Accident · No injuries · Data collection · Final report · Jul 28, 2019 · N79575 · Substantial damage > The pilot's improper fuel planning and decision to not divert to a closer airport when the planned flight profile changed, which resulted in a total loss of engine power due to fuel exhaustion. - [NTSB CEN19LA243](https://openairdocs.org/ntsb/CEN19LA243.md): Culver LCA · Viroqua, WI · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 25, 2019 · N29272 · Substantial damage > A total loss of engine power due to fuel exhaustion. - [NTSB CEN19IA234](https://openairdocs.org/ntsb/CEN19IA234.md): Mooney M20J · Oshkosh, WI · Incident · No injuries · Class 3 · Incident · Final report · Jul 21, 2019 · N9201A · 2 aircraft · Minor damage > The failure of both pilots to remain clear of the other while flying in formation. - [NTSB CEN19LA188](https://openairdocs.org/ntsb/CEN19LA188.md): Cessna 560 · Janesville, WI · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 27, 2019 · N318RW · Minor damage > The passenger’s decision to unbuckle her restraints during an in-flight turbulence event, resulting in serious injury. - [NTSB GAA19CA338](https://openairdocs.org/ntsb/GAA19CA338.md): Pzl-Swidnik PW-5 · Independence, WI · Accident · No injuries · Data collection · Final report · Jun 10, 2019 · N962JH · Substantial damage > The separation of the canopy from the glider during an off-airport landing for reasons that could not be determined. - [NTSB GAA19CA245](https://openairdocs.org/ntsb/GAA19CA245.md): Ercoupe 415 C · Rosendale, WI · Accident · No injuries · Data collection · Final report · May 6, 2019 · N2101H · Substantial damage > The pilot's selection of unsuitable terrain for an off-airport precautionary landing, which resulted in impact with a fence and a nose-over. - [NTSB GAA19CA166](https://openairdocs.org/ntsb/GAA19CA166.md): Cessna 177RG · Land O' Lakes, WI · Accident · Minor injuries · Data collection · Final report · Mar 9, 2019 · N52047 · Substantial damage > The pilot's improper fuel planning, which resulted in fuel exhaustion and the subsequent total loss of engine power. - [NTSB CEN19LA060](https://openairdocs.org/ntsb/CEN19LA060.md): Stinson 108 · Keshena, WI · Accident · Serious injuries · Class 3 · Limited · Final report · Jan 19, 2019 · N97969 · Substantial damage > A total loss of engine power during cruise flight for undetermined reasons, which resulted in a forced landing and subsequent impact with trees. - [NTSB CEN19LA071](https://openairdocs.org/ntsb/CEN19LA071.md): Piper PA24 · Beechwood, WI · Accident · Minor injuries · Class 3 · Limited · Final report · Jan 18, 2019 · N6497P · Substantial damage > A partial loss of engine power for reasons that could not be determined based on the available information. - [NTSB GAA19CA074](https://openairdocs.org/ntsb/GAA19CA074.md): Cirrus SR22 · Sand Creek, WI · Accident · No injuries · Data collection · Final report · Nov 21, 2018 · N579CP · Substantial damage > The mechanic's failure to properly secure the air reference line, which resulted in a loss of engine power. - [NTSB CEN19FA018](https://openairdocs.org/ntsb/CEN19FA018.md): Eurocopter AS350 · Odanah, WI · Accident · 1 fatal · Field investigation · Final report · Oct 29, 2018 · N910S · Destroyed > The pilot's loss of helicopter control for undetermined reasons. - [NTSB CEN18LA200](https://openairdocs.org/ntsb/CEN18LA200.md): Irlbeck Thomas H RV 8 · Somerset, WI · Accident · No injuries · Class 3 · Limited · Final report · May 29, 2018 · N214FF · Substantial damage > A total loss of engine power due to damaged and disconnected electronic ignition wires from both the main and backup batteries, which resulted in a forced landing. - [NTSB CEN18LA159](https://openairdocs.org/ntsb/CEN18LA159.md): Beech A36 · Shullsburg, WI · Accident · No injuries · Limited investigation · Final report · May 5, 2018 · N36LP · Substantial damage > A catastrophic engine failure due to improper torque on the engine through-bolt nuts, which resulted in relative movement between the crankcase halves, damage to a main journal bearing, and a loss of oil lubrication. - [NTSB CEN18FA149](https://openairdocs.org/ntsb/CEN18FA149.md): Eurocopter AS 350 B2 · Hazelhurst, WI · Accident · 3 fatal · Field investigation · Final report · Apr 27, 2018 · N127LN · Destroyed > The pilot's loss of helicopter control as a result of fatigue during cruise flight at night. - [NTSB CEN17LA344](https://openairdocs.org/ntsb/CEN17LA344.md): Aviat A 1B · Prairie du Chien, WI · Accident · No injuries · Limited investigation · Final report · Sep 9, 2017 · N299CA · Substantial damage > The fatigue failure of the aileron hinge bracket tubing for reasons that could not be determined based on the available evidence. - [NTSB CEN17FA248](https://openairdocs.org/ntsb/CEN17FA248.md): Cessna 421C · Catawba, WI · Accident · 6 fatal · Field investigation · Final report · Jul 1, 2017 · N2655B · Destroyed > A loss of control and subsequent in-flight breakup for reasons that could not be determined based on the available information. - [NTSB GAA17CA244](https://openairdocs.org/ntsb/GAA17CA244.md): Beech 99 · Waukesha, WI · Accident · No injuries · Data collection · Final report · Apr 24, 2017 · N899CZ · Substantial damage > An in-flight collision with a bird during the approach. - [NTSB CEN17LA076](https://openairdocs.org/ntsb/CEN17LA076.md): Cessna 182T · Green Bay, WI · Accident · No injuries · Limited investigation · Final report · Jan 11, 2017 · C-GTBI · Substantial damage > The airplane’s encounter with unforecast icing conditions, which led to structural icing that obscured the pilot’s vision, an aerodynamic stall, and a subsequent hard landing. - [NTSB CEN16LA309](https://openairdocs.org/ntsb/CEN16LA309.md): Cessna 172K · Neenah, WI · Accident · No injuries · Limited investigation · Final report · Aug 2, 2016 · N46459 · Substantial damage > A loss of engine power due to oil starvation, which resulted from the pilot, who was not a certified airframe and powerplant mechanic, removing the vacuum pump from the engine, and his misconception that he could operate the airplane without the pump. - [NTSB CEN16LA273](https://openairdocs.org/ntsb/CEN16LA273.md): Brandt Sonex · Lodi, WI · Accident · No injuries · Limited investigation · Final report · Jul 19, 2016 · N393SX · Substantial damage > The separated rocker arm assembly for undetermined reasons, which resulted in the partial loss of engine power and led to the landing gear collapsing during the subsequent forced landing. - [NTSB CEN16LA069](https://openairdocs.org/ntsb/CEN16LA069.md): Cirrus Design SR22 · Watertown, WI · Accident · Serious injuries · Limited investigation · Final report · Dec 27, 2015 · N5PF · Substantial damage > The pilot’s improper in-flight fuel management, which resulted in a total loss of engine power due to fuel starvation. Contributing to the accident was the pilot’s failure to switch fuel tanks after the engine lost power, and his delayed decision to activate… - [NTSB CEN15FA315](https://openairdocs.org/ntsb/CEN15FA315.md): Sanford Zenith CH 601XL · Bristol, WI · Accident · 2 fatal · Field investigation · Final report · Jul 25, 2015 · N9601 · Substantial damage > The pilot’s failure to maintain airspeed and airplane control following a loss of engine power during cruise flight. Contributing to the accident was the installation of ignition system coils that were not engine-manufacturer replacement parts, which… - [NTSB CEN15LA217](https://openairdocs.org/ntsb/CEN15LA217.md): Cessna 150F · Neillsville, WI · Accident · Minor injuries · Limited investigation · Final report · May 2, 2015 · N8558G · Substantial damage > A partial loss of engine power for reasons that could not be determined because a postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation. - [NTSB GAA15CA009](https://openairdocs.org/ntsb/GAA15CA009.md): Beech 76 · Juda, WI · Accident · No injuries · Data collection · Final report · Mar 16, 2015 · N6700D · Substantial damage > The pilot's improper fuel planning, which resulted in fuel exhaustion, and a loss of engine power enroute. - [NTSB CEN15FA119](https://openairdocs.org/ntsb/CEN15FA119.md): Cessna 182L · Owen, WI · Accident · 1 fatal · Field investigation · Final report · Jan 26, 2015 · N3181R · Substantial damage > The flight instructor's decision to initiate flight into forecasted icing conditions in an airplane that was not certified or equipped for flight into icing conditions, which resulted in significant structural ice accumulation to the extent that the airplane… - [NTSB CEN15FA027](https://openairdocs.org/ntsb/CEN15FA027.md): Cessna T210M · Bay City, WI · Accident · 1 fatal · Field investigation · Final report · Oct 24, 2014 · N761SU · Destroyed > The non-instrument rated pilot’s continued visual flight into instrument flight rules conditions, which resulted in an in-flight loss of control. Next page: https://openairdocs.org/ntsb-phases/400/cases.md?state=WI&page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')), crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')), current_codes AS ( SELECT e.case_mkey, TRY_CAST(e."tier1Number" AS INTEGER) AS code, row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e."isDefiningEvent", false) DESC, e.position) AS n FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.aircrafts_position = 1 AND e."tier1Number" GLOB '[1-9][0-9]*' AND (e."isDefiningEvent" OR e.case_mkey IN (SELECT "mKey" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE "isPre1982")) ), phases AS ( SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main FROM current_codes WHERE n = 1 UNION ALL SELECT o.case_mkey, 'older', o."phaseOfFlightCode", w.main FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o."phaseOfFlightCode" WHERE o.aircrafts_position = 1 AND o."occurrenceNumber" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes) ), case_phases AS ( SELECT p.*, c."eventDate", c."highestInjuryLevel" = 'Fatal' AS fatal, a.aircraft_model_code FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = p.case_mkey LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1 WHERE c."eventDate" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names) ) 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 case_mkey FROM case_phases WHERE main = 400) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-phases/400/cases?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.