# NTSB investigations: Pratt & Whitney R1340 series, OK

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 CEN17CA120](https://openairdocs.org/ntsb/CEN17CA120.md): Aero Commander S2R · Fairmont, OK · Accident · Serious injuries · Data collection · Final report · Mar 2, 2017 · N1755S · Substantial damage
  > The pilot’s failure to maintain clearance from a power line while conducting agricultural spray operations.
- [NTSB GAA16CA176](https://openairdocs.org/ntsb/GAA16CA176.md): North American AT6 · Yukon, OK · Accident · No injuries · Data collection · Final report · Apr 2, 2016 · N107FG · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll in gusty wind conditions, which resulted in runway excursion and impact with terrain.
- [NTSB DFW07CA129](https://openairdocs.org/ntsb/DFW07CA129.md): Grumman G-164A · Sayre, OK · Accident · No injuries · Data collection · Final report · Jun 6, 2007 · N4673 · Substantial damage
  > The partial loss of engine power on takeoff-initial climb for an undetermined reason. A factor associated with the accident was the lack of suitable terrain for a forced landing.
- [NTSB FTW02LA256](https://openairdocs.org/ntsb/FTW02LA256.md): Air Tractor AT-301 · Altus, OK · Accident · Minor injuries · Limited investigation · Final report · Sep 14, 2002 · N23736 · Substantial damage
  > the pilot's failure to maintain clearance with electrical wires while maneuvering during an aerial application flight.
- [NTSB FTW99LA097](https://openairdocs.org/ntsb/FTW99LA097.md): Aero Commander S2R · Hobart, OK · Accident · Minor injuries · Limited investigation · Final report · Mar 19, 1999 · N5647X · Destroyed
  > The loss of engine power due to an undetermined reason. A factor was the ditch.
- [NTSB FTW98LA171](https://openairdocs.org/ntsb/FTW98LA171.md): Aero Commander S2R · Cushing, OK · Accident · No injuries · Limited investigation · Final report · Apr 4, 1998 · N8984Q · Substantial damage
  > The total loss of engine power resulting from a sheared accessory drive due to an undetermined reason. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW97LA228](https://openairdocs.org/ntsb/FTW97LA228.md): Rockwell S-2R · Pond Creek, OK · Accident · No injuries · Limited investigation · Final report · Jun 18, 1997 · N4859X · Destroyed
  > loss of engine power for undetermined reason(s). A factor relating to the accident was: the lack of suitable terrain for a forced landing.
- [NTSB FTW96LA326](https://openairdocs.org/ntsb/FTW96LA326.md): Rockwell International S2R · Tahlequah, OK · Accident · No injuries · Limited investigation · Final report · Jul 25, 1996 · N4886X · Substantial damage
  > the pilot's failure to refuel the airplane resulting in fuel exhaustion. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW96LA070](https://openairdocs.org/ntsb/FTW96LA070.md): Grumman G-164B · Pawnee, OK · Accident · No injuries · Limited investigation · Final report · Dec 13, 1995 · N6642K · Substantial damage
  > The pilot's failure to maintain adequate clearance from the terrain.
- [NTSB FTW89DPJ03](https://openairdocs.org/ntsb/FTW89DPJ03.md): Air Tractor 301 · Jefferson, OK · Accident · No injuries · Final report · Apr 7, 1989 · N4369S · Substantial damage
  > Loss of engine power, due to a cracked number 4 cylinder. A factor related to the accident was: the terrace (dirt bank) in the emergency landing area.
- [NTSB FTW87DPJ01](https://openairdocs.org/ntsb/FTW87DPJ01.md): Snow AT-301 · Hennessey, OK · Accident · No injuries · Final report · Nov 1, 1986 · N7309D · Substantial damage
  > The acft collided with a street sign during takeoff. Unablt to maintain flight, the plt landed the acft in a field collapsing the right landing gear.
- [NTSB FTW86FA076](https://openairdocs.org/ntsb/FTW86FA076.md): North American SNJ-5 · Anadarko, OK · Accident · 1 fatal · Field investigation · Final report · May 4, 1986 · N43775 · Destroyed
  > The pilot radioed that he had smoke in the cockpit. He immediately made an emergency landng, down wind, in a farmer's field. Witnesses saw the aircraft's right wing drop before the plane touched down. The resulting impact tore the wings and engine off,…
- [NTSB FTW85FA335](https://openairdocs.org/ntsb/FTW85FA335.md): North American British Harvard Mkii · Ada, OK · Accident · 2 fatal · Field investigation · Final report · Aug 28, 1985 · N711XX · Destroyed
  > Two fully qualified single engine plts were in the acft at the time of the accidnet. The acft was observed making low passes near the airport after takeoff. One plt's mother lived near the accident site. The acft was in a steep banked right turn when the…
- [NTSB FTW85LA162](https://openairdocs.org/ntsb/FTW85LA162.md): North American AT-6G · Frederick, OK · Accident · No injuries · Limited investigation · Final report · Mar 23, 1985 · N9035Z · Substantial damage
  > The passenger heard a loud mechanical noise from the tail of the aircraft during rollout from a touch-and-go landing. The pilot was unable to maintain directional control, the aircraft ground looped, the main landing gear collapsed, and the wings were…
- [NTSB FTW82DA177](https://openairdocs.org/ntsb/FTW82DA177.md): Grumman G-164A · Elreno, OK · Accident · No injuries · Final report · May 13, 1982 · N7843 · Destroyed
  > During takeoff the pilot encountered standing water on the runway. The aircraft swerved left and nosed over.
- [NTSB FTW79DPM24](https://openairdocs.org/ntsb/FTW79DPM24.md): Air Tractor 301 · Bartlesville, OK · Accident · No injuries · Closed · Jul 2, 1978 · N4430S · Substantial damage
- [NTSB FTW77DPJ23](https://openairdocs.org/ntsb/FTW77DPJ23.md): Rockwell S2R · Tyrone, OK · Accident · No injuries · Closed · Jun 17, 1977 · N5615X · Substantial damage

## 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" = 'OK' 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=OK

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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.