# NTSB investigations: Air Tractor AT-502: Collision with terr/obj (non-CFIT)

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 CEN24LA193](https://openairdocs.org/ntsb/CEN24LA193.md): Air Tractor AT-502 · Covert, KS · Accident · No injuries · Class 3 · Limited · Final report · May 19, 2024 · N15189 · Substantial damage
  > The improper maintenance of the fuel control unit, which resulted in air leakage and a loss of control of fuel flow to the engine.
- [NTSB ERA22FA350](https://openairdocs.org/ntsb/ERA22FA350.md): Air Tractor AT-502 · Cheneyville, LA · Accident · 1 fatal · Class 3 · Field · Final report · Aug 2, 2022 · N9184Q · Substantial damage
  > The pilot’s loss of control after exceeding the airplane’s critical angle of attack for reasons that could not be determined.
- [NTSB CEN22LA352](https://openairdocs.org/ntsb/CEN22LA352.md): Air Tractor AT-502 · Washington, LA · Accident · No injuries · Class 4 · Limited · Final report · Aug 1, 2022 · N407CT · Substantial damage
  > The pilot’s failure to maintain clearance from a wire during an aerial application of a field.
- [NTSB CEN20LA013](https://openairdocs.org/ntsb/CEN20LA013.md): Air Tractor AT 502 · Lamesa, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Oct 22, 2019 · N9143F · Minor damage
  > The pilot's improper decision to maneuver at a low altitude and in close proximity to a wind turbine undergoing maintenance, which resulted in a collision with a tagline rope being held by a worker on the ground and serious injury to the worker.
- [NTSB GAA19CA453](https://openairdocs.org/ntsb/GAA19CA453.md): Air Tractor AT 502 · Stanton, TX · Accident · No injuries · Data collection · Final report · Jul 24, 2019 · N15400 · Substantial damage
  > The pilot's failure to maintain clearance from wires during an agricultural application flight.
- [NTSB CEN19FA117](https://openairdocs.org/ntsb/CEN19FA117.md): Air Tractor AT 502 · Harlingen, TX · Accident · 1 fatal · Class 3 · Field · Final report · Apr 9, 2019 · N7314D · Destroyed
  > The pilot’s failure to maintain clearance from power transmission lines during low altitude flight operations. Contributing to the accident was the pilot’s impairment due to a sedating medication.
- [NTSB GAA16CA321](https://openairdocs.org/ntsb/GAA16CA321.md): Air Tractor AT 502 · Delhi, LA · Accident · No injuries · Data collection · Final report · Jun 15, 2016 · N1002L · Substantial damage
  > The pilot's inability to maintain directional control during the landing roll as a result of a piece of concrete from the runway impacting the right main landing gear brake during the landing roll, resulting in a right brake failure and a ground loop.
- [NTSB CEN16LA208](https://openairdocs.org/ntsb/CEN16LA208.md): Air Tractor AT-502 · Ropesville, TX · Accident · Serious injuries · Limited investigation · Final report · Jun 6, 2016 · N10325 · Destroyed
  > The pilot's failure to maintain airspeed and his exceedance of the airplane's critical angle of attack, which resulted in an aerodynamic stall while maneuvering.
- [NTSB CEN16LA181](https://openairdocs.org/ntsb/CEN16LA181.md): Air Tractor AT 502 · West, TX · Accident · 1 fatal · Limited investigation · Final report · May 14, 2016 · N1546Z · Destroyed
  > The pilot’s failure to see and avoid cellular tower guy wires. Contributing to the accident was the pilot’s decision to operate at low altitude.
- [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 CEN14LA349](https://openairdocs.org/ntsb/CEN14LA349.md): Air Tractor AT-502 · Carthage, IL · Accident · Minor injuries · Limited investigation · Final report · Jul 7, 2014 · N9185G · Substantial damage
  > The airplane’s inability to climb out of ground effect, which resulted from the pilot using a lower power setting than needed for takeoff due to the mechanic’s installation of the wrong engine torque gauge.
- [NTSB CEN12CA546](https://openairdocs.org/ntsb/CEN12CA546.md): Air Tractor AT-502 · Hanley Falls, MN · Accident · Minor injuries · Data collection · Final report · Aug 14, 2012 · N1021D · Substantial damage
  > The pilot’s failure to maintain clearance from a guy wire during an agricultural application pass.
- [NTSB CEN12CA375](https://openairdocs.org/ntsb/CEN12CA375.md): Air Tractor AT-502 · Ipswich, SD · Accident · No injuries · Data collection · Final report · Jun 15, 2012 · N45379 · Substantial damage
  > The pilot's failure to abort the takeoff, which resulted in a runway excursion.
- [NTSB CEN11LA499](https://openairdocs.org/ntsb/CEN11LA499.md): Air Tractor AT-502 · Fergus Falls, MN · Accident · No injuries · Limited investigation · Final report · Jul 22, 2011 · N1516G · Substantial damage
  > The total loss of engine power for reasons that could not be determined because the airplane came to rest inverted in water.
- [NTSB WPR11LA288](https://openairdocs.org/ntsb/WPR11LA288.md): Air Tractor AT-502 · Lewistown, MT · Accident · No injuries · Limited investigation · Final report · Jun 25, 2011 · N1022N · Substantial damage
  > The fatigue fracture and separation of the fuel bypass line, which resulted in a total loss of engine power.
- [NTSB CEN09CA540](https://openairdocs.org/ntsb/CEN09CA540.md): Air Tractor AT-502 · East Grand Forks, MN · Accident · Minor injuries · Data collection · Final report · Aug 22, 2009 · N4516K · Substantial damage
  > The pilot's failure to maintain clearance with the crops while maneuvering at low altitude.
- [NTSB MIA08CA170](https://openairdocs.org/ntsb/MIA08CA170.md): Air Tractor AT-502 · Satartia, MS · Accident · Minor injuries · Data collection · Final report · Aug 22, 2008 · N1520X · Substantial damage
  > The pilot's inadequate visual lookout resulting in the in-flight collision with a 40-foot-tall antenna.

## 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.aircraft_model_code IN ('0390303')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '470' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/470/sequence?model=0390303

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