# NTSB investigations: Air Tractor AT-502: 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 ERA17LA326](https://openairdocs.org/ntsb/ERA17LA326.md): Air Tractor AT 502 · Union City, TN · Accident · No injuries · Limited investigation · Final report · Sep 15, 2017 · N4531K · Substantial damage
  > The catastrophic failure of the compressor turbine blades, which resulted in a total loss of engine power. Contributing to the accident was the installation of undocumented, time-limited engine components of indeterminate age.
- [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 WPR09CA064](https://openairdocs.org/ntsb/WPR09CA064.md): Air Tractor AT-502 · Dinuba, CA · Accident · No injuries · Data collection · Final report · Dec 16, 2008 · N1035F · Substantial damage
  > The failure of maintenance personnel to properly install the engine's Py line correctly, which resulted in the total loss of engine power and subsequent force landing. Contributing to the accident was the lack of suitable terrain.

## 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" = '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=0390303

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