# NTSB investigations, 2021, WI

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 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 CEN22FA019](https://openairdocs.org/ntsb/CEN22FA019.md): American Champion 8KCAB · Marengo, WI · Accident · 2 fatal · Class 3 · Field · Final report · Oct 23, 2021 · N843AC · Destroyed
  > The pilot’s failure to maintain adequate airspeed during the steep turn, which resulted in the airplane exceeding its critical angle of attack and an aerodynamic stall. Also causal was the pilot’s decision to conduct steep turns without sufficient altitude to…
- [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 CEN21LA474](https://openairdocs.org/ntsb/CEN21LA474.md): Navion Navion H · Burlington, WI · Accident · No injuries · Class 4 · Limited · Final report · Sep 16, 2021 · N1061Y · Substantial damage
  > The pilot’s failure to maintain aircraft control during landing with a gusting crosswind that resulted in an aerodynamic stall and a hard impact on the runway.
- [NTSB CEN21LA407](https://openairdocs.org/ntsb/CEN21LA407.md): Aeromot AMT-100 · Menomonie, WI · Accident · No injuries · Class 4 · Limited · Final report · Sep 7, 2021 · N69FW · Substantial damage
  > The pilot’s failure to extend the landing gear.
- [NTSB CEN21LA398](https://openairdocs.org/ntsb/CEN21LA398.md): Segarra Lucas JR Zenith Stoll 701 · Grantsburg, WI · Accident · No injuries · Class 4 · Limited · Final report · Sep 1, 2021 · N705L · Substantial damage
  > The pilot’s improper landing flare, which resulted in abnormal runway contact and the nose landing gear collapsing.
- [NTSB CEN21LA367](https://openairdocs.org/ntsb/CEN21LA367.md): Pulsar Sport 150 · Osceola, WI · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 9, 2021 · N997EM · Substantial damage
  > The total loss of engine power for undermined reasons based on available information
- [NTSB CEN21LA349](https://openairdocs.org/ntsb/CEN21LA349.md): Robinson Helicopter R44 II · Randolph, WI · Accident · Serious injuries · Class 4 · Limited · Final report · Jul 31, 2021 · N285RG · Substantial damage
  > The pilot’s failure to maintain clearance from power lines during a low-level aerial application flight.
- [NTSB CEN21FA345](https://openairdocs.org/ntsb/CEN21FA345.md): Piper J3C-65 · Hartford, WI · Accident · 1 fatal · Class 3 · Field · Final report · Jul 31, 2021 · N42522 · Substantial damage
  > The flight crew’s exceedance of the airplane’s critical angle of attack during a simulated engine failure during initial climb after takeoff, which led to an aerodynamic stall/spin and loss of control. Contributing to the severity of the occupants’ injuries…
- [NTSB CEN21LA344](https://openairdocs.org/ntsb/CEN21LA344.md): Weiss Denis Sparrow II · Oshkosh, WI · Accident · Minor injuries · Class 4 · Limited · Final report · Jul 30, 2021 · N725DW · Substantial damage
  > The pilot’s improper landing flare which resulted in a bounced landing, a loss of control, and runway excursion.
- [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 CEN21LA336](https://openairdocs.org/ntsb/CEN21LA336.md): Driver RV-7 · Oshkosh, WI · Accident · No injuries · Class 3 · Limited · Final report · Jul 23, 2021 · N977RV · 2 aircraft · Substantial damage
  > The RV-8 pilot’s failure to account for the position of the RV-7 behind him during the landing roll in a staggered landing formation, which resulted in a ground collision of the two airplanes. Contributing to the accident was the self-induced pressure created…
- [NTSB CEN21LA333](https://openairdocs.org/ntsb/CEN21LA333.md): Boeing E75 · Baraboo, WI · Accident · No injuries · Class 4 · Limited · Final report · Jul 23, 2021 · N51CF · Substantial damage
  > The pilot’s failure to maintain clearance from the fence while on final approach.
- [NTSB CEN21LA452](https://openairdocs.org/ntsb/CEN21LA452.md): Robinson Helicopter R44 · Mineral Point, WI · Accident · No injuries · Class 4 · Limited · Final report · Jul 20, 2021 · N44XB · Substantial damage
  > The pilot’s failure to see and avoid a wire during an aerial application flight, resulting in a collision with the wire.
- [NTSB CEN21LA324](https://openairdocs.org/ntsb/CEN21LA324.md): Aeronca 7AC · Rhinelander, WI · Accident · No injuries · Class 4 · Limited · Final report · Jul 15, 2021 · N84318 · Substantial damage
  > The pilot’s failure to maintain directional control during landing.
- [NTSB CEN21FA297](https://openairdocs.org/ntsb/CEN21FA297.md): Earthstar Gull 2000 · Curtiss, WI · Accident · 1 fatal · Class 3 · Field · Final report · Jun 30, 2021 · N1712L · Substantial damage
  > The non-instrument-rated pilot’s decision to depart into instrument meteorological conditions with dense fog and low clouds, which resulted in spatial disorientation and a loss of airplane control. Contributing to the accident was the pilot’s self-imposed…
- [NTSB CEN21LA280](https://openairdocs.org/ntsb/CEN21LA280.md): Cirrus Design SR22 · Hayward, WI · Accident · No injuries · Class 4 · Limited · Final report · Jun 18, 2021 · N729SA · Substantial damage
  > The pilot's failure to maintain directional control during landing with gusting wind.
- [NTSB CEN21LA222](https://openairdocs.org/ntsb/CEN21LA222.md): Flight Design Ctls · Racine, WI · Accident · Minor injuries · Class 3 · Limited · Final report · May 18, 2021 · N521CT · Destroyed
  > The fatigue failure of the carburetor throttle control cable, which resulted in a partial loss of engine control.
- [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 CEN21LA180](https://openairdocs.org/ntsb/CEN21LA180.md): Cessna 180 · Delavan, WI · Accident · Minor injuries · Class 4 · Limited · Final report · Apr 3, 2021 · N1522C · Substantial damage
  > The pilot’s failure to maintain control of the airplane during the landing roll with gusting crosswinds, which resulted in his excessive brake input and a subsequent nose over.
- [NTSB CEN21LA147](https://openairdocs.org/ntsb/CEN21LA147.md): Piper PA-23 · Oshkosh, WI · Accident · No injuries · Class 3 · Limited · Final report · Feb 27, 2021 · N1460P · Substantial damage
  > The failure of the nose landing gear lower drag link for reasons that could not be determined based on available information, which resulted in the collapse of the nose landing gear.
- [NTSB CEN21FA130](https://openairdocs.org/ntsb/CEN21FA130.md): Velocity Vtwin · Janesville, WI · Accident · 2 fatal · Class 3 · Field · Final report · Feb 16, 2021 · N13VT · Substantial damage
  > The exceedance of the maximum airspeed for flight with the landing gear extended, which resulted in a separation of the right main landing gear door that subsequently impacted the right propeller and resulted in a total loss of right engine power.…
- [NTSB CEN21LA127](https://openairdocs.org/ntsb/CEN21LA127.md): Cessna 172N · Prairie du Sac, WI · Accident · No injuries · Class 4 · Limited · Final report · Feb 12, 2021 · N3477E · Substantial damage
  > The student pilot’s loss of directional control during takeoff, which resulted in the collision with a snowbank. Contributing to the accident was the compacted snow conditions on the runway surface.

## 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 year(c."eventDate") = 2021
  AND c."eventStateOrRegion" = 'WI' AND c."eventCountry" = 'USA'
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?state=WI&year=2021

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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.