# NTSB investigations: Pratt & Whitney Canada PT6A-34AG

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 WPR26LA249](https://openairdocs.org/ntsb/WPR26LA249.md): Air Tractor AT-502B · Ogden, UT · Accident · No injuries · Class 3 · Limited · Preliminary report · Jul 7, 2026 · N647LA · Substantial damage
  > On July 7, 2026, about 1259 mountain daylight time, an Air Tractor, Inc. AT-502B airplane, N647LA, was substantially damaged when it was involved in an accident near Ogden, Utah. The commercial pilot was not injured. The flight was conducted as a Title 14…
- [NTSB ANC26FA054](https://openairdocs.org/ntsb/ANC26FA054.md): Air Tractor AT-502B · Forbes, MO · Accident · 1 fatal · Class 3 · Field · Preliminary report · Jun 16, 2026 · N503GK · Substantial damage
  > On June 15, 2026, about 2015 Central daylight time, an Air Tractor AT-502B airplane, N503GK, sustained substantial damage when it was involved in an accident near Forbes, Missouri. The pilot was fatally injured. The airplane was operated as a Title 14 Code of…
- [NTSB CEN25LA274](https://openairdocs.org/ntsb/CEN25LA274.md): Air Tractor AT502 · Hastings, NE · Accident · No injuries · Class 4 · Limited · Final report · Jul 22, 2025 · N502KB · Substantial damage
  > The pilot’s failure to maintain clearance from powerlines while maneuvering at low altitude.
- [NTSB CEN25LA267](https://openairdocs.org/ntsb/CEN25LA267.md): Air Tractor AT-402B · Wyoming, IL · Accident · Minor injuries · Class 4 · Limited · Final report · Jul 15, 2025 · N647RA · Substantial damage
  > The pilot’s failure to attain a positive climb rate due to airplane’s improper takeoff configuration.
- [NTSB CEN25LA221](https://openairdocs.org/ntsb/CEN25LA221.md): Air Tractor AT-402B · Pierre, SD · Accident · Serious injuries · Class 4 · Limited · Final report · Jun 24, 2025 · N107ML · Substantial damage
  > The pilot’s failure to maintain clearance with the power lines while maneuvering that resulted in an in-flight collision with the power lines and impact with terrain.
- [NTSB CEN25LA219](https://openairdocs.org/ntsb/CEN25LA219.md): Air Tractor AT-502B · Charleston, MO · Accident · Minor injuries · Class 4 · Limited · Final report · Jun 23, 2025 · N114WL · Substantial damage
  > The pilot’s loss of control during the spray pass, which resulted in impact with vegetation and terrain.
- [NTSB GAA25WA281](https://openairdocs.org/ntsb/GAA25WA281.md): Air Tractor AT-504 · Gizan, Saudi Arabia · Accident · Serious injuries · Class 4 · Foreign · Oct 9, 2024 · N149SH · Destroyed
- [NTSB WPR25LA011](https://openairdocs.org/ntsb/WPR25LA011.md): Air Tractor AT502 · Corcoran, CA · Accident · No injuries · Class 4 · Limited · Final report · Oct 8, 2024 · N243LA · Substantial damage
  > A total loss of engine power due to the pilot's improper manipulation of the condition lever during flight, which resulted in fuel starvation and a forced landing.
- [NTSB CEN24FA221](https://openairdocs.org/ntsb/CEN24FA221.md): Air Tractor AT502 · Whiteface, TX · Accident · 1 fatal · Class 3 · Field · Final report · Jun 14, 2024 · N2032K · 2 aircraft · Substantial damage
  > Both pilot’s failure to see and avoid the other airplane during simultaneous aerial application operations over the same area. Contributing to the accident was the operator’s poor decision to assign the pilots to conduct separate aerial application operations…
- [NTSB CEN23FA412](https://openairdocs.org/ntsb/CEN23FA412.md): Air Tractor AT-502B · New Rockford, ND · Accident · 1 fatal · Class 3 · Field · Final report · Sep 19, 2023 · N502NB · Substantial damage
  > The pilot’s failure to maintain clearance from overhead power lines during an aerial application flight. Contributing to the accident was the pilot’s decision to fly under the power lines with a small area of clearance available for the airplane.
- [NTSB CEN23LA223](https://openairdocs.org/ntsb/CEN23LA223.md): Air Tractor AT-502B · Lake Village, AR · Accident · No injuries · Class 3 · Limited · Final report · Jun 3, 2023 · N509HB · Substantial damage
  > A reported loss of thrust for reasons that could not be determined.
- [NTSB CEN22LA312](https://openairdocs.org/ntsb/CEN22LA312.md): Air Tractor AT-502B · Decatur, IL · Accident · No injuries · Class 3 · Limited · Final report · Jul 11, 2022 · N5850R · Substantial damage
  > Fracture of the compressor turbine (CT) blades due to creep.
- [NTSB CEN21LA362](https://openairdocs.org/ntsb/CEN21LA362.md): Air Tractor AT-502B · Topeka, KS · Accident · No injuries · Class 4 · Limited · Final report · Aug 6, 2021 · N502CP · Substantial damage
  > The pilot’s decision to continue low-level aerial application flight maneuvers after the low fuel warning light illuminated, which resulted in a partial loss of engine power due to fuel exhaustion.
- [NTSB CEN21LA322](https://openairdocs.org/ntsb/CEN21LA322.md): Air Tractor AT502 · Edcouch, TX · Accident · No injuries · Class 4 · Limited · Final report · Jul 15, 2021 · N334LA · Substantial damage
  > The pilot’s inadequate compensation for a gusting wind during takeoff.
- [NTSB ERA21FA257](https://openairdocs.org/ntsb/ERA21FA257.md): Air Tractor AT-402B · Kinston, NC · Accident · 1 fatal · Class 3 · Field · Final report · Jun 18, 2021 · N402SJ · Destroyed
  > The pilot’s decision to conduct low-level aerobatic maneuvers in an airplane not approved for aerobatic flight, which resulted in an aerodynamic stall and spin, a loss of control, and an impact with terrain.
- [NTSB CEN20LA306](https://openairdocs.org/ntsb/CEN20LA306.md): Air Tractor AT502 · Grant, NE · Accident · 1 fatal · Class 3 · Limited · Final report · Jul 25, 2020 · N502KJ · Substantial damage
  > The pilot’s exceedance of the airplane’s critical angle of attack while maneuvering during an agricultural flight, which resulted in an aerodynamic stall and a loss of control at too low of an altitude to recover. Contributing to the accident was the pilot’s…
- [NTSB ERA20CA253](https://openairdocs.org/ntsb/ERA20CA253.md): Air Tractor AT502 · Washington, NC · Accident · No injuries · Class 4 · Data collection · Final report · Jul 15, 2020 · N2038Q · Substantial damage
  > The pilot's failure to maintain directional during landing on a wet grass runway.
- [NTSB ERA20CA231](https://openairdocs.org/ntsb/ERA20CA231.md): Air Tractor AT502 · South Bay, FL · Accident · No injuries · Class 4 · Data collection · Final report · Jun 29, 2020 · N42190 · Substantial damage
  > The pilot's loss of airplane control during the approach, which resulted in an aerodynamic stall and impact with vegetation and terrain.
- [NTSB ERA20LA217](https://openairdocs.org/ntsb/ERA20LA217.md): Air Tractor AT502 · Atmore, AL · Accident · 1 fatal · Class 3 · Limited · Final report · Jun 16, 2020 · N879JA · Substantial damage
  > The pilot’s exceedance of the airplane’s critical angle of attack while maneuvering at low altitude, which resulted in an aerodynamic stall, spin, and loss of control.
- [NTSB CEN20CA079](https://openairdocs.org/ntsb/CEN20CA079.md): Air Tractor AT-504 · Fort Morgan, CO · Accident · No injuries · Data collection · Final report · Feb 8, 2020 · N970FA · Substantial damage
  > The pilot's improper landing flare, which resulted in a bounced landing, and his subsequent failure to maintain directional control, which resulted in the left main landing gear tire bursting and the tailwheel assembly failing.
- [NTSB GAA19CA502](https://openairdocs.org/ntsb/GAA19CA502.md): Air Tractor AT502 · Onida, SD · Accident · No injuries · Data collection · Final report · Aug 16, 2019 · N500KA · Substantial damage
  > The pilot's failure to maintain clearance from power wires during agricultural application operations.
- [NTSB GAA19CA480](https://openairdocs.org/ntsb/GAA19CA480.md): Air Tractor AT502 · Waco, NE · Accident · No injuries · Data collection · Final report · Aug 4, 2019 · N730JD · Substantial damage
  > The pilot's failure to maintain clearance from wires during an agricultural application flight.
- [NTSB GAA19CA339](https://openairdocs.org/ntsb/GAA19CA339.md): Air Tractor AT502 · San Benito, TX · Accident · No injuries · Data collection · Final report · Jun 13, 2019 · N103CK · Substantial damage
  > The pilot's improper decision to take off with the airplane near its maximum allowable gross takeoff weight and his subsequent exceedance of the airplane's critical angle of attack during takeoff, which resulted in an aerodynamic stall.
- [NTSB CEN18FA339](https://openairdocs.org/ntsb/CEN18FA339.md): Air Tractor AT502 · Bronson, MI · Accident · 1 fatal · Field investigation · Final report · Aug 18, 2018 · N502RL · Destroyed
  > The pilot's failure to maintain airspeed while maneuvering, which resulted in exceedance of the airplane's critical angle of attack, an aerodynamic stall, and loss of control at an altitude too low for recovery.
- [NTSB CEN18FA232](https://openairdocs.org/ntsb/CEN18FA232.md): Air Tractor AT 502B · Enid, OK · Accident · 1 fatal · Class 2 · Field · Final report · Jun 19, 2018 · N2063B · Destroyed
  > The pilot's failure to see and avoid a known obstacle (communications tower) during agricultural spraying operations.
- [NTSB GAA18CA010](https://openairdocs.org/ntsb/GAA18CA010.md): Air Tractor AT 402B · Brawley, CA · Accident · No injuries · Data collection · Final report · Oct 11, 2017 · N80060 · Substantial damage
  > The pilot’s failure to maintain directional control during landing in gusting crosswind conditions.
- [NTSB CEN17CA294](https://openairdocs.org/ntsb/CEN17CA294.md): Air Tractor AT 502B · Harrold, SD · Accident · Minor injuries · Data collection · Final report · Jul 26, 2017 · N421CA · Substantial damage
  > The pilot’s improper attempt at a low-pass maneuver, which resulted in a collision with a tractor.
- [NTSB CEN17LA176](https://openairdocs.org/ntsb/CEN17LA176.md): Thrush S2R-H80 · Gypsum, KS · Accident · No injuries · Limited investigation · Final report · May 5, 2017 · N3045R · Substantial damage
  > A total loss of engine power during a low-altitude agricultural application flight for reasons that could not be determined during detailed examinations. Contributing to the accident was the pilot’s failure to follow the airplane manufacturer's emergency…
- [NTSB ERA17WA055](https://openairdocs.org/ntsb/ERA17WA055.md): Ayres S2R · Valparaiso, Chile · Accident · 1 fatal · Foreign investigation · Nov 23, 2016 · N5532G · Substantial damage
  > On November 23, 2016, about 1410 universal coordinated time, an Ayres S2-R, United States registration N5532G, was destroyed when it impacted mountainous terrain near Paso Internacional Los Libertadores, Chile. The pilot was fatally injured. The flight…
- [NTSB GAA17CA030](https://openairdocs.org/ntsb/GAA17CA030.md): Air Tractor AT 502 · Paragould, AR · Accident · Minor injuries · Data collection · Final report · Oct 18, 2016 · N4218E · Substantial damage
  > The pilot's failure to avoid electrical wires during low-altitude maneuvering, which resulted in a wire strike.
- [NTSB WPR16FA148](https://openairdocs.org/ntsb/WPR16FA148.md): Air Tractor AT 502B · Zamora, CA · Accident · 1 fatal · Field investigation · Final report · Jul 23, 2016 · N502WC · 2 aircraft · Substantial damage
  > The failure of both pilots to maintain an adequate visual lookout, which resulted in a midair collision. Also causal was the other pilot's use of two sedating antihistamines and two impairing medication and the effect of sun glare on his visual lookout, which…
- [NTSB CEN16LA154](https://openairdocs.org/ntsb/CEN16LA154.md): Air Tractor AT 502 · Kilbourne, LA · Accident · 1 fatal · Class 3 · Limited · Final report · Apr 18, 2016 · N301LA · Destroyed
  > The failure of the operator to comply with the terminating action of the airworthiness directive, which resulted in the subsequent failure and separation of the vertical stabilizer due to fatigue.
- [NTSB CEN15LA335](https://openairdocs.org/ntsb/CEN15LA335.md): Air Tractor AT 502B · Virden, IL · Accident · No injuries · Limited investigation · Final report · Aug 1, 2015 · N502LH · Substantial damage
  > The pilot’s failure to establish a proper airspeed during takeoff with the airplane near its maximum gross weight and with a quartering tailwind.
- [NTSB GAA15CA152](https://openairdocs.org/ntsb/GAA15CA152.md): Air Tractor AT 502B · Edna, TX · Accident · No injuries · Data collection · Final report · Jun 24, 2015 · N6107W · Substantial damage
  > The pilot's failure to maintain directional control during the takeoff roll, resulting in a runway excursion, and collision with a fence.
- [NTSB WPR15LA176](https://openairdocs.org/ntsb/WPR15LA176.md): Ayres S2R T34 · Blythe, CA · Accident · 1 fatal · Limited investigation · Final report · Jun 2, 2015 · N4018Q · Destroyed
  > The pilot's failure to maintain adequate airspeed while maneuvering, which resulted in the airplane exceeding its critical angle-of-attack and experiencing an aerodynamic stall.
- [NTSB GAA15LA101](https://openairdocs.org/ntsb/GAA15LA101.md): Air Tractor AT 502B · Archer City, TX · Accident · Serious injuries · Limited investigation · Final report · May 31, 2015 · N120TF · Substantial damage
  > The pilot’s failure to maintain adequate clearance from power transmission lines during an aerial application flight.
- [NTSB CEN15LA226](https://openairdocs.org/ntsb/CEN15LA226.md): Air Tractor AT 502B · Dighton, KS · Accident · No injuries · Limited investigation · Final report · May 10, 2015 · N879JA · Substantial damage
  > The pilot's failure to follow the Preflight checklist and his inadequate preflight inspection, during which he failed to detect the water contamination of the fuel, which resulted in a partial loss of engine power during initial climb.
- [NTSB CEN15LA222](https://openairdocs.org/ntsb/CEN15LA222.md): Air Tractor AT 502B · Basile, LA · Accident · 1 fatal · Limited investigation · Final report · May 5, 2015 · N4221G · Destroyed
  > The pilot’ failure to maintain adequate clearance from trees while maneuvering during an aerial application flight.
- [NTSB WPR15LA048](https://openairdocs.org/ntsb/WPR15LA048.md): Air Tractor AT 502B · Somerton, AZ · Accident · 1 fatal · Limited investigation · Final report · Nov 30, 2014 · N946TR · Destroyed
  > A loss of airplane control for reasons that could not be determined based on available evidence.
- [NTSB CEN14CA464](https://openairdocs.org/ntsb/CEN14CA464.md): Air Tractor AT 502B · Colusa, IL · Accident · No injuries · Data collection · Final report · Aug 27, 2014 · N369AB · Substantial damage
  > The pilot did not maintain control of the airplane during takeoff from a grass strip. Contributing was the airplane being loaded beyond its capability for the runway.
- [NTSB CEN14CA429](https://openairdocs.org/ntsb/CEN14CA429.md): Air Tractor AT 502B · Minden, NE · Accident · No injuries · Data collection · Final report · Jul 29, 2014 · N502NR · Substantial damage
  > The pilot's inadequate survey of the aerial application field which resulted in a collision with a windmill.
- [NTSB CEN14CA341](https://openairdocs.org/ntsb/CEN14CA341.md): Air Tractor AT 402B · Sudan, TX · Accident · Minor injuries · Data collection · Final report · Jun 26, 2014 · N5197U · Substantial damage
  > The pilot's lapse in monitoring the airplane's speed during a low level aerial application maneuver and its subsequent stall during the maneuver.
- [NTSB WPR14CA003](https://openairdocs.org/ntsb/WPR14CA003.md): Air Tractor AT 402B · Wellton, AZ · Accident · No injuries · Data collection · Final report · Oct 2, 2013 · N402TR · Substantial damage
  > The pilot’s distracted attention and failure to maintain sufficient altitude to clear terrain while maneuvering in dark night conditions.
- [NTSB CEN13LA391](https://openairdocs.org/ntsb/CEN13LA391.md): Air Tractor AT-402B · Ipswich, SD · Accident · No injuries · Limited investigation · Final report · Jul 2, 2013 · N2072D · Substantial damage
  > The pilot’s failure to obtain adequate airspeed during the takeoff roll, which resulted in an aerodynamic stall.
- [NTSB CEN13LA384](https://openairdocs.org/ntsb/CEN13LA384.md): Ayres S2R-T34 · Heth, AR · Accident · No injuries · Limited investigation · Final report · Jun 28, 2013 · N455JM · Substantial damage
  > The partial collapse of the right main landing gear during landing due to an improper previous weld repair to the right main landing gear and subsequent corrosion, which resulted in a loss of directional control and impact with terrain.
- [NTSB CEN11LA487](https://openairdocs.org/ntsb/CEN11LA487.md): Ayres S2R · Burlington, CO · Accident · No injuries · Limited investigation · Final report · Jul 18, 2011 · N70216 · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB CEN09CA194](https://openairdocs.org/ntsb/CEN09CA194.md): Air Tractor AT-502B · Harrold, SD · Accident · Minor injuries · Data collection · Final report · Mar 6, 2009 · N648LA · Substantial damage
  > The pilot's failure to maintain clearance from the power lines during his turn to reverse course due to weather. Contributing to the accident was the reduced visibility at the time of the accident.
- [NTSB DFW05LA182](https://openairdocs.org/ntsb/DFW05LA182.md): Ayres S2R-T34 · Bonita, LA · Accident · No injuries · Limited investigation · Final report · Jul 14, 2005 · N61220 · 2 aircraft · Substantial damage
  > The failure of the pilot to maintain adequate visual lookout, which resulted in a midair collision.

## 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 ('52251'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52251

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