# NTSB investigations: Pratt & Whitney R1340 series, IA

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 CEN21LA393](https://openairdocs.org/ntsb/CEN21LA393.md): Air Tractor AT-401B · Storm Lake, IA · Accident · No injuries · Class 4 · Limited · Final report · Sep 1, 2021 · N5081W · Substantial damage
  > The pilot’s failure to maintain adequate airspeed during a landing approach with a tailwind that resulted in a landing overrun and impact with terrain.
- [NTSB CEN21LA319](https://openairdocs.org/ntsb/CEN21LA319.md): Air Tractor AT-401 · Carroll, IA · Accident · No injuries · Class 3 · Limited · Final report · Jul 13, 2021 · N7315P · Substantial damage
  > The wear-related failure of the airframe fuel boost pump, which resulted in fuel starvation and a loss of engine power.
- [NTSB CEN20LA294](https://openairdocs.org/ntsb/CEN20LA294.md): Rockwell S2R · Harlan, IA · Accident · No injuries · Class 3 · Limited · Final report · Jul 20, 2020 · N1662S · Substantial damage
  > The fatigue fracture of the upper rudder hinge that resulted in a partial separation of the rudder from the airplane during a spray pass.
- [NTSB CEN20LA276](https://openairdocs.org/ntsb/CEN20LA276.md): Rockwell S2R R1340 · Keokuk, IA · Accident · No injuries · Class 3 · Limited · Final report · Jul 12, 2020 · N3104S · Substantial damage
  > The improper installation of a fuel vent line during maintenance, which resulted in fuel starvation and a total loss of engine power.
- [NTSB CEN18LA288](https://openairdocs.org/ntsb/CEN18LA288.md): Air Tractor AT 301 · Milford, IA · Accident · No injuries · Limited investigation · Final report · Jul 22, 2018 · N3169H · Substantial damage
  > The pilot's loss of airplane control during takeoff for reasons that could not be determined because no anomalies consistent with a flight control system malfunction were observed.
- [NTSB CEN18LA278](https://openairdocs.org/ntsb/CEN18LA278.md): Aero Commander S2R · Vinton, IA · Accident · No injuries · Class 3 · Limited · Final report · Jul 17, 2018 · N5553X · Substantial damage
  > Loss of throttle control input due to a failure in the throttle control system. Contributing to the accident was the inadequate inspection and reinstallation of worn parts by maintenance personnel.
- [NTSB CEN13LA533](https://openairdocs.org/ntsb/CEN13LA533.md): Grumman G-164A · Atlantic, IA · Accident · Minor injuries · Limited investigation · Final report · Sep 6, 2013 · N7843 · Destroyed
  > The pilot’s delay in releasing product to reduce the airplane’s weight and improve its climb performance, which was reduced because of the high density altitude.
- [NTSB CEN11LA543](https://openairdocs.org/ntsb/CEN11LA543.md): Aero Commander S2R · Washington, IA · Accident · No injuries · Limited investigation · Final report · Aug 3, 2011 · N1735S · Substantial damage
  > The loss of engine power for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN10CA402](https://openairdocs.org/ntsb/CEN10CA402.md): Grumman Acft ENG Cor-Schweizer G-164B · Independence, IA · Accident · No injuries · Data collection · Final report · Jul 13, 2010 · N8260K · Substantial damage
  > The pilot's failure to pay attention to the power lines and his subsequent failure to maintain clearance from the corn field during the aerial application flight.
- [NTSB CEN09CA516](https://openairdocs.org/ntsb/CEN09CA516.md): Grumman Acft ENG Cor-Schweizer G-164A · Harlan, IA · Accident · No injuries · Data collection · Final report · Aug 10, 2009 · N4598 · Substantial damage
  > The pilot's failure to perform accurate weight and balance calculations which resulted in exceeding the maximum takeoff weight and the airplane's climb capability.
- [NTSB CEN09LA503](https://openairdocs.org/ntsb/CEN09LA503.md): Air Tractor AT401 · Waterloo, IA · Accident · No injuries · Limited investigation · Final report · Aug 4, 2009 · N60747 · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB CEN09LA451](https://openairdocs.org/ntsb/CEN09LA451.md): Grumman Acft ENG Cor-Schweizer G-164B · Beaman, IA · Accident · No injuries · Limited investigation · Final report · Jul 10, 2009 · N6683K · Substantial damage
  > The loss of engine power during initial climb for undetermined reasons.
- [NTSB CHI08CA251](https://openairdocs.org/ntsb/CHI08CA251.md): Air Tractor AT-301B · Monticello, IA · Accident · Minor injuries · Data collection · Final report · Aug 13, 2008 · N3161D · Substantial damage
  > Poor preflight planning in that the pilot failed to assure an adequate fuel supply was on board for the flight which resulted in fuel exhaustion. Factors associated with the accident were the low altitude of the airplane when the loss of power occurred and…
- [NTSB CHI08CA213](https://openairdocs.org/ntsb/CHI08CA213.md): Air Tractor AT-401 · Ida Grove, IA · Accident · No injuries · Data collection · Final report · Aug 12, 2008 · N45029 · Substantial damage
  > A failure of the turbocharger blower which resulted in the partial loss of power. Factors associated with the accident were the low altitude of the airplane and the embankment.
- [NTSB CHI08CA242](https://openairdocs.org/ntsb/CHI08CA242.md): Schweizer G-164A · Jefferson, IA · Accident · No injuries · Data collection · Final report · Aug 8, 2008 · N73PB · Substantial damage
  > The loss of engine power for an undetermined reason and the unsuitable terrain encountered during the forced landing. The corn crop was a factor.
- [NTSB CHI08CA220](https://openairdocs.org/ntsb/CHI08CA220.md): Air Tractor AT-401 · Lake View, IA · Accident · Minor injuries · Data collection · Final report · Jul 26, 2008 · N9193F · Substantial damage
  > The pilot not obtaining/maintaining altitude/clearance from the power line while performing an aerial application maneuver.
- [NTSB CHI07CA250](https://openairdocs.org/ntsb/CHI07CA250.md): Grumman G-164A · Vinton, IA · Accident · Minor injuries · Data collection · Final report · Aug 5, 2007 · N48558 · Destroyed
  > The pilot failed to maintain clearance from the power line while maneuvering during an aerial application flight. A factor was the power line.
- [NTSB CHI07CA220](https://openairdocs.org/ntsb/CHI07CA220.md): Schweizer G-164B · West Liberty, IA · Accident · Minor injuries · Data collection · Final report · Jul 20, 2007 · N8490K · Substantial damage
  > The pilot's inadvertent encounter with birds immediately after takeoff and the resulting loss of engine power. Contributing factors were the fence and ditch encountered during the overrun.
- [NTSB CHI05LA229](https://openairdocs.org/ntsb/CHI05LA229.md): Grumman G-164A · Marshalltown, IA · Accident · No injuries · Limited investigation · Final report · Aug 12, 2005 · N9632 · Substantial damage
  > The loss of engine power for undetermined reasons during initial climb and the unsuitable landing area encountered by the pilot during a forced landing.
- [NTSB CHI03LA261](https://openairdocs.org/ntsb/CHI03LA261.md): Air Tractor AT-301 · Aplington, IA · Accident · Serious injuries · Limited investigation · Final report · Aug 14, 2003 · N4339S · Substantial damage
  > The pilot not maintaining proper altitude/clearance from the wire during the aerial application flight. The factor to the accident was the power line.
- [NTSB CHI02LA095](https://openairdocs.org/ntsb/CHI02LA095.md): Schweizer G-164A · Cascade, IA · Accident · Serious injuries · Limited investigation · Final report · Mar 20, 2002 · N9763 · Substantial damage
  > The pilot's inadequate preflight planning/preparation and his failure to maintain clearance with the wire. A factor associated with the accident was the wire that the airplane contacted.
- [NTSB CHI01LA300](https://openairdocs.org/ntsb/CHI01LA300.md): Grumman-Schweizer G-164B · Atlantic, IA · Accident · No injuries · Limited investigation · Final report · Sep 3, 2001 · N6598K · Destroyed
  > The loss of engine power for undetermined reasons during the takeoff and initial climb, and the unsuitable terrain encountered during the forced landing. Factors relating to this accident were the corn crop and the low altitude.
- [NTSB CHI99LA274](https://openairdocs.org/ntsb/CHI99LA274.md): North American AT-6G · Harlan, IA · Accident · No injuries · Limited investigation · Final report · Aug 1, 1999 · N98FP · Substantial damage
  > the failure of the pilot to maintain directional control of the aircraft during landing. Factors to the accident were the crosswind, the failure of the pilot to maintain compensation for the crosswind condition on approach, and the inadvertent ground loop…
- [NTSB CHI98LA250](https://openairdocs.org/ntsb/CHI98LA250.md): Canadian Car & Foundry Harvard MK IV · Dyersville, IA · Accident · Minor injuries · Limited investigation · Final report · Jul 14, 1998 · N5101W · Substantial damage
  > the pilot in command's not maintaining control of the airplane and his inadvertently allowing the airplane to enter a stall. A factor was the undetermined loss of engine power.
- [NTSB MKC73FCD04](https://openairdocs.org/ntsb/MKC73FCD04.md): Grumman G164 · Northwood, IA · Accident · Serious injuries · Closed · Jul 15, 1972 · N7228 · Destroyed

## 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."eventStateOrRegion" = 'IA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52016'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52016&state=IA

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.