# NTSB investigations: Pratt & Whitney R1340 series, MN

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 CEN23LA375](https://openairdocs.org/ntsb/CEN23LA375.md): Schweizer G-164B · Rice, MN · Accident · No injuries · Class 4 · Limited · Final report · Aug 21, 2023 · N943QC · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll with a left crosswind.
- [NTSB CEN23FA269](https://openairdocs.org/ntsb/CEN23FA269.md): Schweizer G-164B · Beltrami, MN · Accident · 1 fatal · Class 3 · Field · Final report · Jun 27, 2023 · N7503H · Substantial damage
  > A collision with terrain and subsequent nose over for undetermined reasons.
- [NTSB CEN18LA332](https://openairdocs.org/ntsb/CEN18LA332.md): Aero Commander S2R · Westbrook, MN · Accident · Minor injuries · Limited investigation · Final report · Aug 15, 2018 · N5521X · Substantial damage
  > A runway excursion during takeoff for reasons that could not be determined based on the available evidence.
- [NTSB GAA18CA371](https://openairdocs.org/ntsb/GAA18CA371.md): Air Tractor AT 301 · Hutchinson, MN · Accident · No injuries · Data collection · Final report · Jun 20, 2018 · N3169D · Substantial damage
  > The pilot’s improper preflight fuel planning, which resulted in fuel exhaustion and the subsequent total loss of engine power.
- [NTSB GAA16CA399](https://openairdocs.org/ntsb/GAA16CA399.md): Air Tractor AT 301 · Bird Island, MN · Accident · No injuries · Data collection · Final report · Jul 27, 2016 · N7311X · Substantial damage
  > The pilot's diverted attention inside the cockpit and failure to maintain the airplane's altitude while maneuvering at a low altitude, resulting in an impact with terrain.
- [NTSB CEN14CA442](https://openairdocs.org/ntsb/CEN14CA442.md): Rockwell International S 2R · Kerkhoven, MN · Accident · No injuries · Data collection · Final report · Aug 19, 2014 · N9646A · Substantial damage
  > The pilot failure to see and avoid the guide wire during the aerial application flight.
- [NTSB CEN12LA491](https://openairdocs.org/ntsb/CEN12LA491.md): Grumman G-164A · Fergus Falls, MN · Accident · No injuries · Limited investigation · Final report · Jul 20, 2012 · N4638 · Substantial damage
  > A total loss of engine power due to a cracked No. 2 cylinder head.
- [NTSB CEN10LA338](https://openairdocs.org/ntsb/CEN10LA338.md): Pilatus P3-05 · Canby, MN · Accident · No injuries · Limited investigation · Final report · Jun 20, 2010 · N831AS · 2 aircraft · Substantial damage
  > The North American's pilot's failure to maintain adequate visual lookout, which resulted in an on-ground collision with the Pilatus.
- [NTSB CHI08CA266](https://openairdocs.org/ntsb/CHI08CA266.md): Air Tractor AT-301A · Jasper, MN · Accident · No injuries · Data collection · Final report · Aug 25, 2008 · N3654T · Substantial damage
  > The pilot's failure to assure the primer control was locked during the aircraft preflight. Factors associated with the accident were the low altitude at which the airplane was operating, the fence, the roadway, and the ditch.
- [NTSB CHI08CA176](https://openairdocs.org/ntsb/CHI08CA176.md): Aero Commander S2R · Clontarf, MN · Accident · No injuries · Data collection · Final report · Jul 6, 2008 · N5519X · Destroyed
  > The pilot's failure to maintain clearance from the power transmission lines. Contributing to the accident was the power transmission lines.
- [NTSB CHI07LA173](https://openairdocs.org/ntsb/CHI07LA173.md): Air Tractor AT-301 · Fergus Falls, MN · Accident · Minor injuries · Limited investigation · Final report · Jun 20, 2007 · N23667 · Substantial damage
  > The propeller blade failure during climb due to a fatigue crack. The oil leak that obstructed the pilot's vision was a factor in the accident.
- [NTSB CHI06CA222](https://openairdocs.org/ntsb/CHI06CA222.md): Rockwell S2R · Park Rapids, MN · Accident · Minor injuries · Data collection · Final report · Jul 30, 2006 · N7982V · Substantial damage
  > A loss of engine power for undetermined reasons and the inadequate airspeed during the forced landing which resulted in a stall/mush. A factor was the low altitude at which the airplane was being operated.
- [NTSB CHI03LA106](https://openairdocs.org/ntsb/CHI03LA106.md): Aero Commander S2R · Benson, MN · Accident · No injuries · Limited investigation · Final report · Apr 13, 2003 · N5519X · Substantial damage
  > The loss of engine power for undetermined reasons.
- [NTSB CHI02LA221](https://openairdocs.org/ntsb/CHI02LA221.md): Air Tractor 301 · Ulen, MN · Accident · Minor injuries · Limited investigation · Final report · Jul 26, 2002 · N3167P · Substantial damage
  > The pilot not performing an aborted takeoff. A factor was the soybean crop.
- [NTSB CHI01LA229](https://openairdocs.org/ntsb/CHI01LA229.md): Grumman-Schweizer G-164A · Dodge Center, MN · Accident · No injuries · Limited investigation · Final report · Jul 22, 2001 · N5398 · Destroyed
  > The pilot not maintaining directional control on the ground during the takeoff roll. Factors relating to this accident were the total failure of the propeller governor and the corn crop.
- [NTSB CHI01LA191](https://openairdocs.org/ntsb/CHI01LA191.md): Air Tractor AT-301 · Grygla, MN · Accident · No injuries · Limited investigation · Final report · Jun 30, 2001 · N3656B · Substantial damage
  > The pilot not maintaining altitude/clearance from terrain on takeoff. A factor was the high density altitude.
- [NTSB CHI98LA230](https://openairdocs.org/ntsb/CHI98LA230.md): Grumman G-164A · Red Lake Falls, MN · Accident · No injuries · Limited investigation · Final report · May 21, 1998 · N9632 · Substantial damage
  > a locked brake for undetermined reasons.
- [NTSB CHI97LA204](https://openairdocs.org/ntsb/CHI97LA204.md): Grumman-Schweizer G-164B · Donnelly, MN · Accident · No injuries · Limited investigation · Final report · Jul 7, 1997 · N6633K · Substantial damage
  > undetermined event resulting in the broken connecting rod and cylinder.
- [NTSB CHI95LA219](https://openairdocs.org/ntsb/CHI95LA219.md): Air Tractor AT-301 · Grygla, MN · Accident · No injuries · Limited investigation · Final report · Jul 12, 1995 · N8673S · Substantial damage
  > The pilot's failure to maintain altitude and/or clearance at the beginning of the spray run. A factor was turbulence due to the different Air temperatures of adjoining terrain.
- [NTSB CHI95LA163](https://openairdocs.org/ntsb/CHI95LA163.md): Schweizer G-164B · E. Grand Forks, MN · Accident · No injuries · Limited investigation · Final report · Jun 1, 1995 · N6682K · Substantial damage
  > The pilot's failure to maintain clearance with the wires.
- [NTSB MKC89LA091](https://openairdocs.org/ntsb/MKC89LA091.md): Air Tractor AT-301 · Roseau, MN · Accident · No injuries · Limited investigation · Final report · Apr 15, 1989 · N23702 · Substantial damage
  > Fuel starvation due to fuel ice.
- [NTSB CHI88LA106](https://openairdocs.org/ntsb/CHI88LA106.md): North American AT-6D · Eden Prairie, MN · Accident · No injuries · Limited investigation · Final report · May 3, 1988 · N29935 · Substantial damage
  > While on an aircraft familiarization for purpose of check out, the pilot encountered a gusty crosswind on landing and failed to maintain aircraft control. The instructor pilot took over the controls, but was unable to regain directional control, and the…
- [NTSB CHI85FER02](https://openairdocs.org/ntsb/CHI85FER02.md): Grumman 164A · Becker, MN · Accident · No injuries · Final report · Sep 18, 1985 · N48405 · Substantial damage
  > The plt reported the eng pwr dropped from 2000 to 1550 RPM during the aerial application flt. The plt increased throttleand advanced the prop with no increase in pwr. The acft then settled to ground impact and nosed over. Post accident inspection disclosed…
- [NTSB CHI85LA283](https://openairdocs.org/ntsb/CHI85LA283.md): Air Tractor AT301 · Roseau, MN · Accident · No injuries · Limited investigation · Final report · Jul 10, 1985 · N23702 · Substantial damage
  > The aircraft had been airborne about 15 min engaged in ag spray operations when the pilot described hearing a loud band. Engine power decreased to idle. Pilot ld in soft soil and nosed over inverted. Exam disclosed #2 piston had failed.
- [NTSB CHI84LA262](https://openairdocs.org/ntsb/CHI84LA262.md): Grumman G-164A · Mahnomen, MN · Accident · No injuries · Limited investigation · Final report · Jun 26, 1984 · N6584 · Substantial damage
  > Shortly after taking off, the eng lost power. The plt stated that the eng stopped completely 'like fuel starvation.' He dumped his load of chemicals & made an emergency landing. During the landing, the acft hit a ditch & nosed over. An investigation revealed…
- [NTSB CHI82DA247](https://openairdocs.org/ntsb/CHI82DA247.md): Aero Commander S2R · Graceville, MN · Accident · No injuries · Final report · Jul 14, 1982 · N3690X · Destroyed
  > The pilot was on an aerial application flight to a field with power lines alongside. The wind was reported to be from the southeast a 6, gusting 11 KTS. The pilot said that he encountered "dead air" while he was in his fourth porcedure turn. Due to the…
- [NTSB MKC80DER65](https://openairdocs.org/ntsb/MKC80DER65.md): Grumman G-164A · Red Lake Falls, MN · Accident · No injuries · Closed · Aug 2, 1979 · N8768H · Substantial damage
- [NTSB MKC78DER64](https://openairdocs.org/ntsb/MKC78DER64.md): Boeing A-75 · Felton, MN · Accident · No injuries · Closed · Jun 28, 1978 · N5413N · Destroyed
- [NTSB MKC77FER73](https://openairdocs.org/ntsb/MKC77FER73.md): Grumman G-164A · Perham, MN · Accident · No injuries · Closed · Aug 3, 1977 · N6606 · Substantial damage
- [NTSB MKC73FER12](https://openairdocs.org/ntsb/MKC73FER12.md): Grumman G-164A · Hollandale, MN · Accident · No injuries · Closed · Aug 17, 1972 · N7843 · Substantial damage
- [NTSB MKC72FER16](https://openairdocs.org/ntsb/MKC72FER16.md): Boeing A75N1 · Waseca, MN · Accident · No injuries · Closed · Aug 12, 1971 · N64514 · Destroyed
- [NTSB UNK64X3353](https://openairdocs.org/ntsb/UNK64X3353.md): Boeing A75N1 · Waseca, MN · Accident · No injuries · Closed · Aug 13, 1964 · N64514 · 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" = 'MN' 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=MN

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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.