# NTSB investigations: Pratt & Whitney R1340 series

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.

Page 14 of 34 · 1,656 cases

## Cases, newest first

- [NTSB LAX94LA299](https://openairdocs.org/ntsb/LAX94LA299.md): Schweizer G-164B · Live Oak, CA · Accident · No injuries · Limited investigation · Final report · Jul 27, 1994 · N3627Q · Substantial damage
  > the improper adjustment of the fuel control unit by contract maintenance personnel.
- [NTSB ATL94LA142](https://openairdocs.org/ntsb/ATL94LA142.md): Grumman G-164A · Samson, AL · Accident · No injuries · Limited investigation · Final report · Jul 18, 1994 · N4242X · Substantial damage
  > The failure of the aileron torque tube bolt from fatigue, which resulted in an inflight loss of aircraft control and collision with terrain.
- [NTSB FTW94LA238](https://openairdocs.org/ntsb/FTW94LA238.md): Rockwell S-2R · Winchester, AR · Accident · Serious injuries · Limited investigation · Final report · Jul 15, 1994 · N4903X · Substantial damage
  > The loss of power due to the number one cylinder head cracking. A factor was the lack of suitable terrain for the forced landing.
- [NTSB MIA94LA172](https://openairdocs.org/ntsb/MIA94LA172.md): Aero Commander S2R · Rolling Fork, MS · Accident · No injuries · Limited investigation · Final report · Jul 3, 1994 · N8820Q · Substantial damage
  > The loss of engine power for undetermined causes. Contributing to the accident was the unsuitable terrain encountered during the forced landing.
- [NTSB ATL94LA130](https://openairdocs.org/ntsb/ATL94LA130.md): Air Tractor AT-301 · Autaugaville, AL · Accident · No injuries · Limited investigation · Final report · Jul 3, 1994 · N3659D · Substantial damage
  > The pilot's inadequate preflight planning, in that he did not properly evaluate the condition of the runway prior to takeoff, and his failure to abort the takeoff when adequate acceleration was not observed. Factors were the high vegetation (grass) on the…
- [NTSB ATL94LA128](https://openairdocs.org/ntsb/ATL94LA128.md): Air Tractor AT-301 · Smithville, GA · Accident · Minor injuries · Limited investigation · Final report · Jul 2, 1994 · N3649B · Destroyed
  > The failure of # 2 cylinder head.
- [NTSB MIA94LA168](https://openairdocs.org/ntsb/MIA94LA168.md): Air Tractor AT-401 · Walls, MS · Accident · Minor injuries · Limited investigation · Final report · Jun 27, 1994 · N45332 · Substantial damage
  > The partial loss of engine power for undetermined reasons. The sandy terrain was a factor.
- [NTSB ATL94LA127](https://openairdocs.org/ntsb/ATL94LA127.md): Air Tractor AT-301 · Finley, TN · Accident · No injuries · Limited investigation · Final report · Jun 27, 1994 · N36484 · Substantial damage
  > The loss of engine power for undetermined reasons. Factors were wet and soft terrain.
- [NTSB FTW94LA211](https://openairdocs.org/ntsb/FTW94LA211.md): Grumman-Schweizer G-164A · Dumas, AR · Accident · No injuries · Limited investigation · Final report · Jun 25, 1994 · N4222P · Destroyed
  > The pilot's failure to establish the proper airspeed before beginning a turn after takeoff.
- [NTSB FTW94LA200](https://openairdocs.org/ntsb/FTW94LA200.md): Air Tractor AT-401 · Pioneer, LA · Accident · Minor injuries · Limited investigation · Final report · Jun 16, 1994 · N10112 · Substantial damage
  > Fuel exhaustion due to the pilot's failure to refuel. A factor was a lack of suitable terrain for the forced landing.
- [NTSB LAX94LA247](https://openairdocs.org/ntsb/LAX94LA247.md): Grumman G-164A · Bakersfield, CA · Accident · Serious injuries · Limited investigation · Final report · Jun 11, 1994 · N8507H · Substantial damage
  > The in-flight fire due to the spontaneous combustion of sulfur dust and subsequent forced landing. A factor was the high temperature.
- [NTSB ATL94GA111](https://openairdocs.org/ntsb/ATL94GA111.md): Grumman G-164A · Savannah, GA · Accident · No injuries · Final report · Jun 2, 1994 · N9868 · Substantial damage
  > The pilot's improper landing flare which resulted in a hard landing. A factor was the operators failure to provide a formal emergency dump procedure.
- [NTSB SEA94LA131](https://openairdocs.org/ntsb/SEA94LA131.md): Rockwell S-2R · Touchet, WA · Accident · Minor injuries · Limited investigation · Final report · May 28, 1994 · N5642X · Substantial damage
  > The pilot's inadequate compensation for wind conditions. The wind gusts were a factor.
- [NTSB CHI94LA176](https://openairdocs.org/ntsb/CHI94LA176.md): Snow 600-S2C · Bancroft, WI · Accident · No injuries · Limited investigation · Final report · May 25, 1994 · N1659S · Substantial damage
  > the pilots failure to select carburetor heat during an extended descent, which resulted in loss of engine power. Factors were carburetor icing conditions and the presence of a ditch at the forced landing site.
- [NTSB FTW94LA178](https://openairdocs.org/ntsb/FTW94LA178.md): Schweizer G-164B · Antonito, CO · Accident · No injuries · Limited investigation · Final report · May 24, 1994 · N6695K · Substantial damage
  > The pilot's improper compensation for wind conditions. A factor was the gusty crosswind and the pilot inadvertently becoming lost.
- [NTSB FTW94LA174](https://openairdocs.org/ntsb/FTW94LA174.md): Grumman G-164A · Stuttgart, AR · Accident · No injuries · Limited investigation · Final report · May 20, 1994 · N9678 · Substantial damage
  > Was the pilots failure to maintain terrain clearance.
- [NTSB ATL94LA104](https://openairdocs.org/ntsb/ATL94LA104.md): Grumman G-164B · Memphis, TN · Accident · No injuries · Limited investigation · Final report · May 20, 1994 · N6816Q · Substantial damage
  > The pilot's failure to maintain clearance from the earthen dike during the swath run.
- [NTSB FTW94LA164](https://openairdocs.org/ntsb/FTW94LA164.md): Aero Commander S2R · Monticello, AR · Accident · No injuries · Limited investigation · Final report · May 17, 1994 · N4080X · Substantial damage
  > The loss of engine power due to the number 2 cylinder cracking. A factor was the lack of suitable terrain for the forced landing.
- [NTSB SEA94LA117](https://openairdocs.org/ntsb/SEA94LA117.md): Schweizer G-164B · Yuba City, CA · Accident · No injuries · Limited investigation · Final report · May 12, 1994 · N8214S · Substantial damage
  > An inadvertent stall/mush after takeoff. The over-weight loading of the aircraft was a factor.
- [NTSB SEA94LA116](https://openairdocs.org/ntsb/SEA94LA116.md): Aero Commander S2R · Dayton, WA · Accident · No injuries · Limited investigation · Final report · May 7, 1994 · N5646X · Substantial damage
  > Total failure of the connecting rod.
- [NTSB FTW94LA145](https://openairdocs.org/ntsb/FTW94LA145.md): Grumman G-164A · El Campo, TX · Accident · Serious injuries · Limited investigation · Final report · May 7, 1994 · N9682 · Destroyed
  > The partial loss of engine power due to one magneto being weak and the other magneto arcing inside its case. A factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI94LA148](https://openairdocs.org/ntsb/CHI94LA148.md): North American T-6G · Prairie Du Sac, WI · Accident · Minor injuries · Limited investigation · Final report · May 5, 1994 · N3715G · Substantial damage
  > inadequate compensation for wind conditions which resulted in a failure to maintain directional control. Factors associated with the accident were the crosswind conditions and the soft terrain.
- [NTSB LAX94LA205](https://openairdocs.org/ntsb/LAX94LA205.md): Grumman G-164B · Robbins, CA · Accident · No injuries · Limited investigation · Final report · Apr 23, 1994 · N6774K · Substantial damage
  > The pilot's improper use of the brakes.
- [NTSB FTW94LA131](https://openairdocs.org/ntsb/FTW94LA131.md): Gulfstream G-164B · Delaplaine, AR · Accident · Minor injuries · Limited investigation · Final report · Apr 21, 1994 · N8402K · Substantial damage
  > The loss of engine power for undetermined reasons. A factor was the low altitude at which the power loss occurred.
- [NTSB FTW94LA122](https://openairdocs.org/ntsb/FTW94LA122.md): Schweizer G-164 · Mount Bellvue, TX · Accident · No injuries · Limited investigation · Final report · Apr 9, 1994 · N3628T · Substantial damage
  > The pilot's failure to maintain directional control. Factors were the soft runway and gusty winds.
- [NTSB CHI94LA106](https://openairdocs.org/ntsb/CHI94LA106.md): Grumman G-164A · Sublette, KS · Accident · No injuries · Limited investigation · Final report · Mar 15, 1994 · N9686 · Substantial damage
  > the commercial pilot's failure to maintain clearance from terrain. Related factors are sun glare and rising terrain.
- [NTSB LAX94LA133](https://openairdocs.org/ntsb/LAX94LA133.md): Schweizer G-164B · Clarksburg, CA · Accident · No injuries · Limited investigation · Final report · Feb 23, 1994 · N36265 · Substantial damage
  > The total failure of the no. 1 cylinder due to fatigue resulting from an improperly adjusted mixture causing detonation. The soft, wet plowed field was a factor in this accident.
- [NTSB LAX94LA099](https://openairdocs.org/ntsb/LAX94LA099.md): Grumman G-164A · Davis, CA · Accident · Serious injuries · Limited investigation · Final report · Jan 20, 1994 · N8649H · Destroyed
  > was that the pilot misjudged the airplane's altitude during the swath run.
- [NTSB LAX94LA063](https://openairdocs.org/ntsb/LAX94LA063.md): North American SNJ-5 · Santa Paula, CA · Accident · No injuries · Limited investigation · Final report · Dec 3, 1993 · N89014 · Substantial damage
  > was the failure of the needle valve pin assembly in the airplane's carburetor. A factor which contributed to the accident was the lack of suitable terrain for the emergency landing.
- [NTSB LAX94LA019](https://openairdocs.org/ntsb/LAX94LA019.md): Schweizer G-164B · Arvin, CA · Accident · No injuries · Limited investigation · Final report · Oct 19, 1993 · N7501K · Substantial damage
  > the loss of power for undetermined reasons.
- [NTSB NYC94LA009](https://openairdocs.org/ntsb/NYC94LA009.md): North American SNJ-2 · Skaneateles, NY · Accident · 1 fatal · Limited investigation · Final report · Oct 15, 1993 · N61563 · Substantial damage
  > The pilot's inadequate preflight preparation which failed to adequately secure cargo, resulting control interference. A factor was the overgross weight condition of the airplane.
- [NTSB LAX93LA365](https://openairdocs.org/ntsb/LAX93LA365.md): Snow 600-S2C · Surprise, AZ · Accident · Minor injuries · Limited investigation · Final report · Sep 22, 1993 · N1677S · Substantial damage
  > The pilot's improper inflight planning resulting in his airplane's encounter with wake turbulence.
- [NTSB ATL93LA157](https://openairdocs.org/ntsb/ATL93LA157.md): Air Tractor AT301 · Deatsville, AL · Accident · No injuries · Limited investigation · Final report · Sep 11, 1993 · N36613 · Substantial damage
  > Was a crack in no.3 cylinder head which resulted in the loss of engine power.
- [NTSB LAX93LA327](https://openairdocs.org/ntsb/LAX93LA327.md): Air Tractor AT-301 · Dos Palos, CA · Accident · No injuries · Limited investigation · Final report · Aug 18, 1993 · N2330V · Substantial damage
  > The failure of the master rod which resulted in a complete loss of engine power and subsequent forced landing. The irrigation ditch was a factor in this accident.
- [NTSB MIA93LA176](https://openairdocs.org/ntsb/MIA93LA176.md): Schweizer G-164B · Immokalee, FL · Accident · No injuries · Limited investigation · Final report · Aug 16, 1993 · N8451K · Substantial damage
  > The pilot-in-command's failure to maintain airspeed (vs) while maneuvering resulting in a stall/mush.
- [NTSB FTW93LA239](https://openairdocs.org/ntsb/FTW93LA239.md): Grumman-Schweizer G-164A · Garwood, TX · Accident · No injuries · Limited investigation · Final report · Aug 13, 1993 · N7993 · Substantial damage
  > The partial power loss for undetermined reasons. A factor was the lack of suitable terrain onto which a forced landing could be executed.
- [NTSB FTW93LA238](https://openairdocs.org/ntsb/FTW93LA238.md): Grumman G-164B · Pioneer, LA · Accident · No injuries · Limited investigation · Final report · Aug 12, 1993 · N8227K · 2 aircraft · Substantial damage
  > The failure by both pilots to maintain visual lookout. Factors were the inadequate radio communications by both pilots, and the departing pilot's failure to follow procedures and directives.
- [NTSB FTW93LA230](https://openairdocs.org/ntsb/FTW93LA230.md): Aero Commander S2R · England, AR · Accident · No injuries · Limited investigation · Final report · Aug 4, 1993 · N5570X · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [NTSB SEA93LA168](https://openairdocs.org/ntsb/SEA93LA168.md): Cessna A150L · Ephrata, WA · Accident · Serious injuries · Limited investigation · Final report · Aug 1, 1993 · N5958J · 2 aircraft · Destroyed
  > Inadequate visual lookout by both pilots, resulting in their failure to see-and-avoid each other's aircraft. A factor related to the accident was: failure of the Grumman 164B pilot to adequately monitor the UNICOM frequency.
- [NTSB BFO93LA142](https://openairdocs.org/ntsb/BFO93LA142.md): North American AT-6 · Matawan, NJ · Accident · No injuries · Limited investigation · Final report · Jul 30, 1993 · N6617X · Substantial damage
  > The water collection in the ignition harness which rendered the lower cylinder spark plugs inoperative resulting in partial power loss.
- [NTSB LAX93LA303](https://openairdocs.org/ntsb/LAX93LA303.md): Ayres S2R · Stratford, CA · Accident · No injuries · Limited investigation · Final report · Jul 28, 1993 · N4930X · Destroyed
  > That the pilot misjudged the airplane's altitude. Factors relating to this accident were the pilot's fatigue and the light conditions.
- [NTSB ATL93LA132](https://openairdocs.org/ntsb/ATL93LA132.md): Grumman G-164A · Atmore, AL · Accident · No injuries · Limited investigation · Final report · Jul 23, 1993 · N4824 · Substantial damage
  > The total failure of the engine supercharger, which resulted in engine stoppage. A factor was the rough terrain at the forced landing site.
- [NTSB DEN93LA081](https://openairdocs.org/ntsb/DEN93LA081.md): Air Tractor AT-401 · Dermott, AR · Accident · No injuries · Limited investigation · Final report · Jul 15, 1993 · N1009T · Substantial damage
  > Power loss due to the total failure of the engine's master rod. Factors were an improper engine overhaul and the lack of suitable terrain for a forced landing.
- [NTSB FTW93LA180](https://openairdocs.org/ntsb/FTW93LA180.md): Grumman G-164A · Dumas, AR · Accident · No injuries · Limited investigation · Final report · Jun 7, 1993 · N6622Q · Substantial damage
  > The pilot's inadequate compensation for wind conditions.
- [NTSB FTW93LA174](https://openairdocs.org/ntsb/FTW93LA174.md): Grumman G-164B · Stuttgart, AR · Accident · No injuries · Limited investigation · Final report · Jun 2, 1993 · N6695K · Substantial damage
  > The pilot's selection of the downwind runway for landing. Factors were the wind conditions and the left brake malfunction for undetermined reasons
- [NTSB FTW93LA173](https://openairdocs.org/ntsb/FTW93LA173.md): Grumman G-164A · Ganado, TX · Accident · 1 fatal · Limited investigation · Final report · Jun 2, 1993 · N6752Q · Destroyed
  > The pilot's failure to maintain clearance with the power lines
- [NTSB FTW93LA167](https://openairdocs.org/ntsb/FTW93LA167.md): Grumman G-164B · Stuttgart, AR · Accident · No injuries · Limited investigation · Final report · May 26, 1993 · N8405K · Destroyed
  > Pilot's failure to maintain clearance from the electrical wires.
- [NTSB FTW93LA156](https://openairdocs.org/ntsb/FTW93LA156.md): Grumman G-164A · Trumann, AR · Accident · No injuries · Limited investigation · Final report · May 15, 1993 · N6556 · Substantial damage
  > Pilot's failure to maintain terrain clearance. A factor was the diverted attention of the pilot.
- [NTSB LAX93LA200](https://openairdocs.org/ntsb/LAX93LA200.md): Grumman 164A · Biggs, CA · Accident · 1 fatal · Limited investigation · Final report · May 5, 1993 · N5249 · Destroyed
  > Failure of the number 2 engine cylinder. A factor related to the accident was the lack of altitude for the pilot to make a successfull forced landing.
- [NTSB DEN93LA051](https://openairdocs.org/ntsb/DEN93LA051.md): Grumman G-164A · Truman, AR · Accident · No injuries · Limited investigation · Final report · Apr 28, 1993 · N31182 · Destroyed
  > A power loss for undetermined reasons. A factor was: the lack of suitable terrain for the forced landing.

Next page: https://openairdocs.org/ntsb.md?engine=52016&page=15

## 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.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&page=14

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