# NTSB investigations: Air Tractor AT-502B: Loss of engine power (total)

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 CEN26LA128](https://openairdocs.org/ntsb/CEN26LA128.md): Air Tractor AT-502 · Larose, LA · Accident · No injuries · Class 4 · Limited · Final report · Mar 1, 2026 · N5063N · Substantial damage
  > The pilot’s improper fuel planning and his failure to adequately monitor the fuel level during flight, which resulted in fuel exhaustion, and a total loss of engine power. Contributing to the accident was the pilot’s lack of attention performing the task,…
- [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 ERA23LA327](https://openairdocs.org/ntsb/ERA23LA327.md): Air Tractor AT502 · Leipsic, OH · Accident · No injuries · Class 3 · Limited · Final report · Aug 4, 2023 · N5048S · Substantial damage
  > The incorrect assembly of the turbine engine’s reduction gear box second-stage ring gear, which resulted in an internal failure of multiple engine components and a total loss of power.
- [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 CEN20LA279](https://openairdocs.org/ntsb/CEN20LA279.md): Air Tractor AT502 · Dalhart, TX · Accident · No injuries · Class 3 · Limited · Final report · Jul 10, 2020 · N61315 · Substantial damage
  > The total loss of engine power due to a failed fuel control unit bearing.
- [NTSB WPR14LA267](https://openairdocs.org/ntsb/WPR14LA267.md): Air Tractor AT 502B · Sacramento, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 23, 2014 · N61150 · Substantial damage
  > The total loss of engine power for reasons that could not be determined because the airplane was not available for postaccident examination.
- [NTSB CEN13LA473](https://openairdocs.org/ntsb/CEN13LA473.md): Air Tractor AT-502B · Nauvoo, IL · Accident · No injuries · Limited investigation · Final report · Jul 15, 2013 · N6113C · Substantial damage
  > A fatigue failure of an engine compressor turbine blade, which resulted in extensive secondary engine damage and a complete loss of engine power.
- [NTSB CEN10LA298](https://openairdocs.org/ntsb/CEN10LA298.md): Air Tractor AT-502B · Pollard, AR · Accident · No injuries · Limited investigation · Final report · Jun 4, 2010 · N6083G · Substantial damage
  > A loss of engine power for undetermined reasons.

## 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 ('0390307')
    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" = '341' 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/341/sequence?model=0390307

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