# NTSB investigations: Pratt & Whitney R1340 series, 2011

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 ERA12CA291](https://openairdocs.org/ntsb/ERA12CA291.md): North American SNJ-6 · Kissimmee, FL · Accident · Serious injuries · Data collection · Final report · Nov 11, 2011 · N452WA · No damage
  > The passenger’s fall from the airplane during a normal egress.
- [NTSB WPR12CA026](https://openairdocs.org/ntsb/WPR12CA026.md): Ayres S2R-600 · Kahlotus, WA · Accident · Serious injuries · Data collection · Final report · Nov 2, 2011 · N1206S · Substantial damage
  > The pilot’s failure to maintain clearance from the ground due to his distraction with programming a global positioning system receiver.
- [NTSB ERA12CA050](https://openairdocs.org/ntsb/ERA12CA050.md): Air Tractor AT-301 · McAlpin, FL · Accident · No injuries · Data collection · Final report · Oct 24, 2011 · N3169C · Substantial damage
  > The pilot's misjudgment of the airplane's distance from known transmission lines.
- [NTSB ANC11FA107](https://openairdocs.org/ntsb/ANC11FA107.md): Dehavilland DHC-3T · Kodiak, AK · Accident · 1 fatal · Field investigation · Final report · Sep 24, 2011 · N361TT · Substantial damage
  > The pilot’s failure to maintain clearance from a tree during a low altitude maneuver and his failure to maintain control of the airplane. Contributing to the accident was the pilot’s use of over-the-counter sedating medications.
- [NTSB CEN11LA610](https://openairdocs.org/ntsb/CEN11LA610.md): Grumman Acft ENG Cor-Schweizer G-164A · Monette, AR · Accident · No injuries · Limited investigation · Final report · Aug 29, 2011 · N48378 · Substantial damage
  > The fracture of the throttle cable in tensile overstress because of wear damage, which resulted in the partial loss of engine power.
- [NTSB CEN11LA556](https://openairdocs.org/ntsb/CEN11LA556.md): Grumman G-164A · El Campo, TX · Accident · No injuries · Limited investigation · Final report · Aug 18, 2011 · N6567 · Substantial damage
  > Separation of the No. 3 cylinder exhaust valve rocker arm, which resulted in a loss of engine power.
- [NTSB WPR11LA386](https://openairdocs.org/ntsb/WPR11LA386.md): Air Tractor AT-401 · Hardin, MT · Accident · No injuries · Limited investigation · Final report · Aug 16, 2011 · N1012T · Substantial damage
  > The loss of engine power during takeoff due to the fatigue failure of the turbine wheel blades, which resulted from inadequate maintenance and inspections.
- [NTSB ERA11CA449](https://openairdocs.org/ntsb/ERA11CA449.md): North American AT-6D · Canon, GA · Accident · Minor injuries · Data collection · Final report · Aug 13, 2011 · N7435U · Substantial damage
  > The pilot's improper fuel management, which resulted in a loss of engine power due to fuel exhaustion.
- [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 CEN11FA562](https://openairdocs.org/ntsb/CEN11FA562.md): Air Tractor AT-301 · Nekoosa, WI · Accident · No injuries · Field investigation · Final report · Aug 4, 2011 · N4345S · Substantial damage
  > A total loss of engine power during initial climb for undetermined reasons.
- [NTSB WPR11LA366](https://openairdocs.org/ntsb/WPR11LA366.md): Ayres S2R-600 · Hazelton, ID · Accident · No injuries · Limited investigation · Final report · Aug 3, 2011 · N4021S · Substantial damage
  > Partial loss of engine power for undetermined reasons.
- [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 CEN11CA570](https://openairdocs.org/ntsb/CEN11CA570.md): Air Tractor AT-301 · Minot, ND · Accident · No injuries · Data collection · Final report · Aug 3, 2011 · N8764S · Substantial damage
  > The pilot's failure to maintain directional control during the crosswind landing, resulting in a ground loop.
- [NTSB WPR11LA320](https://openairdocs.org/ntsb/WPR11LA320.md): Schweizer G-164B · Yuba City, CA · Accident · No injuries · Limited investigation · Final report · Jul 9, 2011 · N7503L · Substantial damage
  > High-cycle fatigue on the 1st-stage compressor blade retaining ring, which resulted in the ring’s fracture and a subsequent loss of engine power.
- [NTSB WPR11CA286](https://openairdocs.org/ntsb/WPR11CA286.md): Air Tractor AT301 · Circle, MT · Accident · No injuries · Data collection · Final report · Jun 24, 2011 · N2362D · Substantial damage
  > The pilot's failure to attain and maintain an adequate airspeed during initial climb.
- [NTSB WPR11LA279](https://openairdocs.org/ntsb/WPR11LA279.md): Rockwell International S-2R · Brawley, CA · Accident · Serious injuries · Limited investigation · Final report · Jun 23, 2011 · N8520V · Substantial damage
  > The partial loss of engine power shortly after takeoff, which likely resulted from the failure of the piston connecting rod in cylinder number 3 due to hydraulic lock in that cylinder.
- [NTSB WPR11LA273](https://openairdocs.org/ntsb/WPR11LA273.md): Schweizer G-164B · Marysville, CA · Accident · No injuries · Limited investigation · Final report · Jun 21, 2011 · N3627G · Substantial damage
  > The separation of the right main landing gear during takeoff, due to fatigue.
- [NTSB WPR11LA272](https://openairdocs.org/ntsb/WPR11LA272.md): Air Tractor AT-301 · Hogeland, MT · Accident · 1 fatal · Limited investigation · Final report · Jun 21, 2011 · N3661B · Substantial damage
  > Collision with the ground while maneuvering at low altitude for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.
- [NTSB WPR11CA261](https://openairdocs.org/ntsb/WPR11CA261.md): Grumman Acft ENG Cor-Schweizer G-164B · Pullman, WA · Accident · Minor injuries · Data collection · Final report · Jun 15, 2011 · N8376K · Substantial damage
  > The pilot's failure to maintain clearance from power lines while maneuvering.
- [NTSB CEN11LA484](https://openairdocs.org/ntsb/CEN11LA484.md): Schweizer G-164B · Cash, AR · Accident · No injuries · Limited investigation · Final report · Jun 11, 2011 · N3629C · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB WPR11CA252](https://openairdocs.org/ntsb/WPR11CA252.md): Air Tractor AT-502B · Odessa, WA · Accident · No injuries · Data collection · Final report · Jun 7, 2011 · N6072X · 2 aircraft · Minor damage
  > The pilot's failure to maintain clearance from the other aircraft.
- [NTSB WPR11LA238](https://openairdocs.org/ntsb/WPR11LA238.md): Grumman G-164A · Hazelton, ID · Accident · No injuries · Limited investigation · Final report · May 28, 2011 · N9724 · Substantial damage
  > A total loss of engine power during low-level maneuvering due to an excessively worn carburetor.
- [NTSB WPR11CA229](https://openairdocs.org/ntsb/WPR11CA229.md): Rockwell International S-2R · Kahlotus, WA · Accident · No injuries · Data collection · Final report · May 18, 2011 · N4996X · Substantial damage
  > The pilot's failure to maintain directional control during takeoff.
- [NTSB CEN11CA330](https://openairdocs.org/ntsb/CEN11CA330.md): Air Tractor AT-301 · Garwood, TX · Accident · No injuries · Data collection · Final report · May 10, 2011 · N5097S · Substantial damage
  > The pilot's failure to maintain adequate clearance from transmission wires during a low-level maneuvering flight.
- [NTSB CEN11CA174](https://openairdocs.org/ntsb/CEN11CA174.md): Gulfstream-Schweizer A/C Gulfstream AM G-164B · Walnut Ridge, AR · Accident · No injuries · Data collection · Final report · May 10, 2011 · N8402K · Substantial damage
  > The pilot's failure to maintain directional control while landing with a left quartering tailwind and wind gusts.
- [NTSB CEN11LA335](https://openairdocs.org/ntsb/CEN11LA335.md): Grumman Acft ENG Cor-Schweizer G-164A · Bono, AR · Accident · No injuries · Limited investigation · Final report · May 9, 2011 · N8930H · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB WPR11CA198](https://openairdocs.org/ntsb/WPR11CA198.md): Grumman G-164 · Princeton, CA · Accident · No injuries · Data collection · Final report · May 4, 2011 · N716Y · Substantial damage
  > The pilot’s failure to maintain adequate airspeed while maneuvering, resulting in an aerodynamic stall and collision with terrain.
- [NTSB CEN11CA301](https://openairdocs.org/ntsb/CEN11CA301.md): Ayres S2R-R1340 · Estelline, SD · Accident · No injuries · Data collection · Final report · Apr 25, 2011 · N3104S · Substantial damage
  > The pilot's failure to maintain directional control of the airplane during takeoff.
- [NTSB WPR11CA128](https://openairdocs.org/ntsb/WPR11CA128.md): Schweizer G-164B · Buttonwillow, CA · Accident · No injuries · Data collection · Final report · Feb 5, 2011 · N6725K · Substantial damage
  > The pilot's failure to maintain clearance from an irrigation vent pipe.

## 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 year(c."eventDate") = 2011
  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&year=2011

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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.