# NTSB investigations: Pratt & Whitney PT6A series: Loss of control on ground

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 ERA26LA172](https://openairdocs.org/ntsb/ERA26LA172.md): Dehavilland DHC-3 · Dry Tortugas, FL · Accident · No injuries · Class 3 · Limited · Preliminary report · Apr 11, 2026 · N708KA · Substantial damage
  > On April 11, 2026, about 0845 eastern daylight time, an amphibious DeHavilland DHC-3, N708KA, was substantially damaged when it was involved in an accident near Dry Tortugas, Florida. The pilot was not injured. The airplane was operated as a Title 14 Code of…
- [NTSB CEN26LA127](https://openairdocs.org/ntsb/CEN26LA127.md): Raytheon B36TC · Durango, CO · Accident · No injuries · Class 4 · Limited · Final report · Feb 26, 2026 · N2251Q · Substantial damage
  > The pilot’s improper landing flare and subsequent loss of directional control while attempting to land during high crosswind conditions.
- [NTSB CEN25FA197](https://openairdocs.org/ntsb/CEN25FA197.md): Air Tractor AT-502 · Grady, AR · Accident · 1 fatal · Class 3 · Field · Preliminary report · Jun 6, 2025 · N9185F · Substantial damage
  > On June 6, 2025, about 1830 central daylight time, an Air Tractor AT-502 airplane, N9185F, was substantially damaged when it was involved in an accident near Grady, Arkansas. The pilot was fatally injured. The airplane was operated as a Title 14 Code of…
- [NTSB ERA25LA061](https://openairdocs.org/ntsb/ERA25LA061.md): Beech B300 · Franklin, NC · Accident · No injuries · Class 3 · Limited · Preliminary report · Nov 28, 2024 · N907EJ · Substantial damage
  > On November 28, 2024, about 1019 eastern standard time, a Beech B300, N907EJ, was substantially damaged when it was involved in an accident near Franklin, North Carolina. The airline transport pilot was not injured. The airplane was operated as a Title…
- [NTSB ANC21LA025](https://openairdocs.org/ntsb/ANC21LA025.md): Cessna 208B · Chevak, AK · Accident · No injuries · Class 4 · Limited · Final report · Mar 13, 2021 · N407GV · Substantial damage
  > The pilot’s loss of directional control during the back-taxi for departure in strong crosswind conditions which resulted in a runway excursion. Contributing to the accident was the snow-and-ice-covered runway.
- [NTSB CEN20CA190](https://openairdocs.org/ntsb/CEN20CA190.md): Air Tractor AT502 · Bunkie, LA · Accident · Minor injuries · Class 4 · Data collection · Final report · May 23, 2020 · N571LA · Substantial damage
  > The pilot's failure to maintain directional control during takeoff.
- [NTSB CEN20CA103](https://openairdocs.org/ntsb/CEN20CA103.md): Air Tractor AT 602 · Bunkie, LA · Accident · No injuries · Data collection · Final report · Feb 22, 2020 · N602BK · Substantial damage
  > The pilot's failure to lock the tailwheel before landing, which resulted in his loss of directional control during the landing roll, a runway excursion onto soft ground, and a subsequent ground loop.
- [NTSB GAA19CA010](https://openairdocs.org/ntsb/GAA19CA010.md): Air Tractor AT 402 · Crowley, LA · Accident · No injuries · Data collection · Final report · Oct 8, 2018 · N1500E · Substantial damage
  > The pilot's selection of unsuitable terrain for takeoff, which resulted in a collision with vegetation and a subsequent loss of directional control.
- [NTSB GAA18CA476](https://openairdocs.org/ntsb/GAA18CA476.md): Air Tractor AT502 · Louise, MS · Accident · No injuries · Data collection · Final report · Jul 30, 2018 · N205SK · Substantial damage
  > The pilot's improper landing flare, which resulted in a hard, bounced landing and a subsequent loss of directional control.
- [NTSB WPR17LA177](https://openairdocs.org/ntsb/WPR17LA177.md): Air Tractor AT 802A · Wells, NV · Accident · No injuries · Limited investigation · Final report · Jul 31, 2017 · N70LA · Substantial damage
  > The pilot's failure to maintain directional control during a period of thermal activity, which led to a runway excursion and impact with terrain.
- [NTSB CEN17LA123](https://openairdocs.org/ntsb/CEN17LA123.md): Beech C 99 · Durango, CO · Accident · No injuries · Limited investigation · Final report · Jan 24, 2017 · N216CS · Substantial damage
  > The pilot's inability to maintain directional control during takeoff in crosswind conditions on a contaminated runway, which resulted in a runway excursion.
- [NTSB GAA16CA477](https://openairdocs.org/ntsb/GAA16CA477.md): Pacific Aerospace 750XL · Warrenton, VA · Accident · No injuries · Data collection · Final report · Sep 9, 2016 · N750SS · Substantial damage
  > The pilot's failure to set the wing flaps for takeoff, which resulted in an aerodynamic stall, an aborted takeoff, and a runway overrun.
- [NTSB GAA16CA224](https://openairdocs.org/ntsb/GAA16CA224.md): Air Tractor AT 502 · Oberlin, KS · Accident · No injuries · Data collection · Final report · May 8, 2016 · N6181Q · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll, which resulted in runway excursion, and a ground loop.
- [NTSB ERA15LA124](https://openairdocs.org/ntsb/ERA15LA124.md): Dehavilland DHC 6 Twin Otter · Sebastian, FL · Accident · No injuries · Limited investigation · Final report · Feb 9, 2015 · N30EA · 2 aircraft · Substantial damage
  > The pilot's failure to conduct all of the required items on the Before Starting Engines checklist, which resulted in her failure to detect an open hydraulic circuit breaker and led to insufficient hydraulic pressure to operate the airplane's brakes, her…
- [NTSB CEN13LA171](https://openairdocs.org/ntsb/CEN13LA171.md): Piper PA46 · Grand Island, NE · Accident · No injuries · Limited investigation · Final report · Feb 13, 2013 · N32CA · Substantial damage
  > The pilot's failure to maintain airplane control after engine start.
- [NTSB CEN13CA043](https://openairdocs.org/ntsb/CEN13CA043.md): Fairchild Heli-Porter Pilatus PC6/B1A-H2 · Georgetown, OH · Accident · Minor injuries · Data collection · Final report · Nov 3, 2012 · N476XP · Substantial damage
  > The pilot's improper recovery from a bounced landing, which resulted in a loss of control.
- [NTSB ERA12CA517](https://openairdocs.org/ntsb/ERA12CA517.md): Air Tractor AT-402B · Gum Neck, NC · Accident · No injuries · Data collection · Final report · Aug 17, 2012 · N5127T · Substantial damage
  > The pilot's failure to maintain airplane control during the takeoff roll. Contributing to the accident was the rough condition of the runway.
- [NTSB CEN12LA323](https://openairdocs.org/ntsb/CEN12LA323.md): Thrush S2RHG-T65 · Alicia, AR · Accident · No injuries · Limited investigation · Final report · May 25, 2012 · N40475 · 2 aircraft · Substantial damage
  > The pilot of the Thrush did not execute a go-around prior to landing, which resulted in excessive ground speed after touchdown, and his subsequent loss of directional control, which resulted in a collision with the Air Tractor.
- [NTSB ANC11LA048](https://openairdocs.org/ntsb/ANC11LA048.md): Dehavilland DHC-3T · Bettles Field, AK · Accident · No injuries · Limited investigation · Final report · May 28, 2011 · N87AW · Substantial damage
  > The pilot's selection of unsuitable terrain for the landing, which resulted in a loss of directional control.
- [NTSB WPR11CA222](https://openairdocs.org/ntsb/WPR11CA222.md): Thrush S2R-T34 · Pleasant Grove, CA · Accident · No injuries · Data collection · Final report · May 11, 2011 · N510CW · Substantial damage
  > The pilot's failure to maintain directional control during the landing.
- [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 ERA09CA428](https://openairdocs.org/ntsb/ERA09CA428.md): Air Tractor AT502 · Dundee, MS · Accident · Minor injuries · Data collection · Final report · Jul 29, 2009 · N502AJ · Substantial damage
  > The pilot's failure to maintain aircraft control during takeoff.
- [NTSB WPR09CA067](https://openairdocs.org/ntsb/WPR09CA067.md): Cessna 208B · Rock Springs, WY · Accident · No injuries · Data collection · Final report · Dec 27, 2008 · N890FE · Substantial damage
  > The pilot's failure to maintain control of the airplane while taxiing. Contributing to the accident were the gusty winds.
- [NTSB DEN08CA136](https://openairdocs.org/ntsb/DEN08CA136.md): Air Tractor AT-402 · Dexter, NM · Accident · No injuries · Data collection · Final report · Aug 9, 2008 · N4555Y · Substantial damage
  > The pilot's failure to maintain directional control of the airplane.

## 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52032', '52034')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '230'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/230/cases?engine=52032

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