# NTSB investigations, WI: Aerodynamic stall/spin

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 CEN26LA125](https://openairdocs.org/ntsb/CEN26LA125.md): Vans RV-12IS · Appleton, WI · Accident · No injuries · Class 4 · Limited · Final report · Feb 24, 2026 · N46TB · Substantial damage
  > The pilot’s failure to maintain proper airspeed during landing and exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall and impact with the runway. Contributing to the accident was the flight instructor’s delayed…
- [NTSB CEN25LA196](https://openairdocs.org/ntsb/CEN25LA196.md): Gallow Daniel A Kitfox Classic IV · Waupaca, WI · Accident · Minor injuries · Class 4 · Limited · Final report · Jun 5, 2025 · N755SD · Substantial damage
  > The pilot’s failure to maintain adequate air speed during final approach, which resulted in an aerodynamic stall and impact with terrain.
- [NTSB CEN23FA332](https://openairdocs.org/ntsb/CEN23FA332.md): North American AT-6D · Oshkosh, WI · Accident · 2 fatal · Class 3 · Field · Final report · Jul 29, 2023 · N49961 · Destroyed
  > The pilot’s failure to maintain airspeed while maneuvering, which resulted in the exceedance of the airplane’s critical angle of attack and an aerodynamic stall/spin.
- [NTSB CEN22FA214](https://openairdocs.org/ntsb/CEN22FA214.md): Cessna 152 · Wauwatosa, WI · Accident · 1 fatal · Class 3 · Field · Final report · May 26, 2022 · N4978B · Substantial damage
  > The student pilot’s exceedance of the airplane’s critical angle of attack, which resulted in a stall from which the student pilot could not recover.
- [NTSB GAA19CA096](https://openairdocs.org/ntsb/GAA19CA096.md): Beech 36 · Hartford, WI · Accident · No injuries · Data collection · Final report · Dec 12, 2018 · N6650M · Substantial damage
  > The pilot's exceedance of the airplane's critical angle of attack, which resulted in an aerodynamic stall and impact with terrain during landing in icing conditions.
- [NTSB CEN17FA287](https://openairdocs.org/ntsb/CEN17FA287.md): Aerofab Lake LA 4 250 · Oshkosh, WI · Accident · 2 fatal · Field investigation · Final report · Jul 28, 2017 · N1400P · Substantial damage
  > The pilot's failure to properly configure the airplane for takeoff and his decision to takeoff with a tailwind in unfavorable water conditions, which resulted in the airplane entering an aerodynamic stall and the pilot losing control.
- [NTSB GAA16CA067](https://openairdocs.org/ntsb/GAA16CA067.md): Taylorcraft BC12 65 · New Lisbon, WI · Accident · Minor injuries · Data collection · Final report · Nov 2, 2015 · N33939 · Substantial damage
  > The pilot's exceedance of the airplane's critical angle of attack, resulting in an inadvertent aerodynamic stall and impact with terrain.
- [NTSB CEN15LA345](https://openairdocs.org/ntsb/CEN15LA345.md): Air Tractor AT 401 · Nekoosa, WI · Accident · No injuries · Limited investigation · Final report · Aug 5, 2015 · N1539U · Substantial damage
  > The pilot’s inadequate preflight planning, which resulted in his attempt to take off for the agricultural application flight with the airplane over its maximum gross weight in high-density altitude conditions and led to the airplane’s degraded climb…
- [NTSB CEN15FA311](https://openairdocs.org/ntsb/CEN15FA311.md): Piper PA-46-310P · Oshkosh, WI · Accident · Serious injuries · Field investigation · Final report · Jul 22, 2015 · N4BP · Substantial damage
  > The pilot's failure to perform a go-around after receiving a modified landing clearance and his failure to maintain adequate airspeed while maneuvering to land, which resulted in the airplane exceeding its critical angle of attack in a steep bank and entering…
- [NTSB CEN15FA249](https://openairdocs.org/ntsb/CEN15FA249.md): Monnett John T JR Sonex SA · Oshkosh, WI · Accident · 2 fatal · Field investigation · Final report · Jun 2, 2015 · N123SX · Substantial damage
  > The pilot's failure to maintain sufficient airspeed following a loss of engine power during initial takeoff climb, which resulted in the airplane's wing exceeding its critical angle-of-attack and a subsequent aerodynamic stall. The reason for the loss of…
- [NTSB CEN15CA071](https://openairdocs.org/ntsb/CEN15CA071.md): Piper PA 18-150 · Minocqua, WI · Accident · Minor injuries · Data collection · Final report · Dec 7, 2014 · N41594 · Substantial damage
  > The pilot did not maintain directional control of the airplane during the landing flare when a sudden wind shift occurred.
- [NTSB CEN13FA060](https://openairdocs.org/ntsb/CEN13FA060.md): Grumman American Avn. AA-1B · Burlington, WI · Accident · 2 fatal · Field investigation · Final report · Nov 18, 2012 · N6273L · Substantial damage
  > The pilot’s failure to maintain control of the airplane while maneuvering at a low altitude, which resulted in an inadvertent stall and spin.
- [NTSB CEN11LA546](https://openairdocs.org/ntsb/CEN11LA546.md): Reinboldt Richard A Challenger II · Reedsburg, WI · Accident · 2 fatal · Limited investigation · Final report · Aug 4, 2011 · N340BR · Substantial damage
  > The pilot did not maintain adequate airspeed during takeoff, which resulted in an aerodynamic stall.
- [NTSB CEN11CA453](https://openairdocs.org/ntsb/CEN11CA453.md): Powrachute Airwolf 912 · Oconto, WI · Accident · Serious injuries · Data collection · Final report · Jun 30, 2011 · N734MP · Substantial damage
  > The powered parachute pilot's decision to execute an in-flight full-flare which resulted in exceeding the angle of attack capabilities of the parachute wing, and subsequent inadvertent stall.
- [NTSB CEN10LA208](https://openairdocs.org/ntsb/CEN10LA208.md): Reed William A Kitfox 4 · Baraboo, WI · Accident · Serious injuries · Limited investigation · Final report · Apr 15, 2010 · N421KF · Substantial damage
  > The pilot's failure to compensate for wind gusts and maintain sufficient airspeed, which resulted in a stall.
- [NTSB CEN09LA263](https://openairdocs.org/ntsb/CEN09LA263.md): Laseure Sonerai II · Grantsburg, WI · Accident · 1 fatal · Limited investigation · Final report · Apr 22, 2009 · N232PE · Destroyed
  > The pilot's failure to maintain airspeed during initial climb which resulted in a stall/spin. Contributing to the accident was the degraded engine performance.
- [NTSB CEN09GA242](https://openairdocs.org/ntsb/CEN09GA242.md): Cessna 337 · Pittsville, WI · Accident · 1 fatal · Final report · Apr 8, 2009 · N2489S · No damage
  > The pilot's failure to maintain adequate airspeed which resulted in an aerodynamic stall at a low altitude.
- [NTSB CHI08FA222](https://openairdocs.org/ntsb/CHI08FA222.md): Piper PA-22 · Oshkosh, WI · Accident · Minor injuries · Field investigation · Final report · Jul 30, 2008 · N3671A · Substantial damage
  > The pilot's failure to maintain adequate airspeed while taking off in gusting winds, which resulted in an aerodynamic stall and subsequent loss of control.
- [NTSB CHI08LA216](https://openairdocs.org/ntsb/CHI08LA216.md): Cirrus Design SR22 · Watertown, WI · Accident · Serious injuries · Limited investigation · Final report · Jul 26, 2008 · N620SR · Destroyed
  > The pilot's failure to maintain adequate airspeed during the go-around, resulting in an aerodynamic stall. Contributing to the accident was the pilot's delayed recovery from the bounced landing.
- [NTSB CHI08LA123](https://openairdocs.org/ntsb/CHI08LA123.md): Dickenson Bathtub · Broadhead, WI · Accident · 1 fatal · Limited investigation · Final report · May 5, 2008 · N538 · Destroyed
  > The pilot's failure to maintain adequate airspeed during approach, which resulted in an aerodynamic stall.

## 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 e.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e."isDefiningEvent" AND e."tier2Number" = '241')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/241/cases?state=WI

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