# NTSB investigations: Air Tractor AT-301: Loss of engine power (partial)

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 CEN22LA354](https://openairdocs.org/ntsb/CEN22LA354.md): Air Tractor AT-301 · Lamoni, IA · Accident · No injuries · Class 3 · Limited · Final report · Aug 1, 2022 · N4326S · Destroyed
  > A loss of airplane performance for reasons that could not be determined.
- [NTSB WPR16LA159](https://openairdocs.org/ntsb/WPR16LA159.md): Air Tractor AT 301 · Weiser, ID · Accident · No injuries · Limited investigation · Final report · Aug 2, 2016 · N23923 · Substantial damage
  > A partial loss of engine power due to an internal catastrophic failure of the master rod crankpin bearing.
- [NTSB CEN14LA287](https://openairdocs.org/ntsb/CEN14LA287.md): Air Tractor AT 301 · Pearsall, TX · Accident · No injuries · Limited investigation · Final report · Jun 12, 2014 · N8593S · Substantial damage
  > The failure of the No. 1 cylinder rod at the link pin. Contributing to the accident was oil starvation to the rod bearing due to the improper flushing of the oil cooler, which allowed metal and other debris in the oil to clog the drain and the led to the…
- [NTSB CEN14LA229](https://openairdocs.org/ntsb/CEN14LA229.md): Air Tractor AT 301 · Hessmer, LA · Accident · No injuries · Limited investigation · Final report · May 5, 2014 · N7309Z · Substantial damage
  > A partial loss of engine power for reasons that could not be determined because a full examination of the engine could not be performed.
- [NTSB CEN13LA341](https://openairdocs.org/ntsb/CEN13LA341.md): Air Tractor AT-301 · Farnsworth, TX · Accident · No injuries · Limited investigation · Final report · Jun 9, 2013 · N4421S · Substantial damage
  > The partial loss of engine power for reasons that could not be determined because the postaccident engine examination revealed no anomalies.
- [NTSB CEN11LA598](https://openairdocs.org/ntsb/CEN11LA598.md): Air Tractor AT-301 · Edgeley, ND · Accident · No injuries · Limited investigation · Final report · Aug 13, 2011 · N73071 · Substantial damage
  > The loss of engine power for reasons that could not be determined because postaccident examination of the airplane and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN10CA582](https://openairdocs.org/ntsb/CEN10CA582.md): Air Tractor AT-301 · Atkins, AR · Accident · No injuries · Data collection · Final report · Sep 17, 2010 · N2309F · Substantial damage
  > A partial loss of engine power during low-altitude flight for undetermined reasons.
- [NTSB WPR09LA085](https://openairdocs.org/ntsb/WPR09LA085.md): Air Tractor AT-301 · Beaver, UT · Accident · Minor injuries · Limited investigation · Final report · Jan 15, 2009 · N3170C · Substantial damage
  > A loss of engine power while maneuvering due to a sheared propeller blade's pitch change link. Contributing to the accident was lack of suitable terrain for the forced landing.
- [NTSB DEN08LA105](https://openairdocs.org/ntsb/DEN08LA105.md): Air Tractor AT-301A · Garwood, TX · Accident · No injuries · Limited investigation · Final report · Jun 19, 2008 · N3166H · Destroyed
  > A loss of engine power due to the total failure of the number 2 cylinder.

## 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 ('0390103', '0390105')
    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" = '342' 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/342/sequence?model=0390103

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