# NTSB investigations: Pratt & Whitney R1340 series: Loss of engine power

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 1 of 3 · 126 cases

## Latest cases

- [NTSB NYC07LA203](https://openairdocs.org/ntsb/NYC07LA203.md): Air Tractor AT-301 · Vandemere, NC · Accident · No injuries · Limited investigation · Final report · Aug 23, 2007 · N3163T · Substantial damage
  > The loss of engine power due to the failure of the supercharger bearings.
- [NTSB DFW07LA187](https://openairdocs.org/ntsb/DFW07LA187.md): Air Tractor AT-402 · Cary, MS · Accident · Minor injuries · Limited investigation · Final report · Aug 20, 2007 · N1027V · Substantial damage
  > The total loss of engine power due to a power turbine failure. Contributing to the accident were the lack of suitable terrain available to pilot for the forced landing and the low altitude.
- [NTSB CHI07LA221](https://openairdocs.org/ntsb/CHI07LA221.md): Grumman G-164A · Moline, IL · Accident · Serious injuries · Limited investigation · Final report · Jul 22, 2007 · N9828 · Destroyed
  > Fatigue failure of the engine cylinder during cruise flight resulting in a loss of engine power. Additional causes were the pilot's failure to maintain sufficient airspeed and the resulting inadvertent stall during the forced landing. A contributing factor…
- [NTSB CHI07CA206](https://openairdocs.org/ntsb/CHI07CA206.md): Grumman G-164B · Alicia, AR · Accident · No injuries · Data collection · Final report · Jul 11, 2007 · N8066K · Substantial damage
  > A loss of engine power for undetermined reasons. Factors associated with the accident were the low altitude at which the loss of power occurred and the flooded rice field in which the airplane was landed.
- [NTSB DFW07LA138](https://openairdocs.org/ntsb/DFW07LA138.md): Air Tractor AT-401 · Oak Grove, LA · Accident · No injuries · Limited investigation · Final report · Jun 6, 2007 · N92PK · Substantial damage
  > A complete loss of power due to failure of the impeller drive gear train and displacement of the blower spring drive mechanism, which resulted in seizure of the propeller shaft/crankshaft. Also causal was the failure of the phenolic separator bracket of the…
- [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 LAX06LA280](https://openairdocs.org/ntsb/LAX06LA280.md): Sikorsky S-55 · Paramount, CA · Accident · No injuries · Limited investigation · Final report · Aug 26, 2006 · N111VA · Substantial damage
  > the loss of engine power for undetermined reasons. A factor was the unsuitable terrain for the landing.
- [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 NYC06LA180](https://openairdocs.org/ntsb/NYC06LA180.md): Grumman G-164A · Vineland, NJ · Accident · Minor injuries · Limited investigation · Final report · Jul 23, 2006 · N6620Q · Substantial damage
  > A loss of engine power due to foreign object damage for undetermined reasons. Contributing to the accident was the furrowed field.
- [NTSB CHI06CA195](https://openairdocs.org/ntsb/CHI06CA195.md): Grumman G-164A · Lakeview, MI · Accident · No injuries · Data collection · Final report · Jul 20, 2006 · N5068 · Substantial damage
  > A loss of engine power for undetermined reasons. A factor associated with the accident was the low altitude at which the airplane was being operated when the loss of engine power occurred.
- [NTSB SEA05LA192](https://openairdocs.org/ntsb/SEA05LA192.md): North American AT-6D · Chehalis, WA · Accident · No injuries · Limited investigation · Final report · Sep 9, 2005 · N3617F · Substantial damage
  > The pilot's failure to follow the checklist to switch to the fullest fuel tank prior to departure which resulted in fuel starvation and a loss of engine power during the initial takeoff climb. Subsequently, the aircraft landed hard damaging the landing gear…
- [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 NYC05LA129](https://openairdocs.org/ntsb/NYC05LA129.md): Grumman-Schweizer G-164A · Penn Yan, NY · Accident · No injuries · Limited investigation · Final report · Aug 6, 2005 · N48395 · Substantial damage
  > The loss of engine power due to a fatigue fractured pushrod.
- [NTSB DFW05CA177](https://openairdocs.org/ntsb/DFW05CA177.md): Grumman-Schweizer G-164C · Gillett, AR · Accident · No injuries · Data collection · Final report · Jul 1, 2005 · N6626K · Substantial damage
  > The loss of engine power resulting from a disconnected discharge pressure line at the fuel control unit. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB SEA05LA126](https://openairdocs.org/ntsb/SEA05LA126.md): Rockwell S-2R · Mountain Home, ID · Accident · No injuries · Limited investigation · Final report · Jun 24, 2005 · N4865X · Substantial damage
  > The pilot's inadequate in-flight decision by failing to refuel resulting in fuel exhaustion during cruise flight and the loss of engine power. A vehicle was a factor in the on ground collision.
- [NTSB DFW05CA166](https://openairdocs.org/ntsb/DFW05CA166.md): Rockwell International S-2R · Watson, AR · Accident · No injuries · Data collection · Final report · Jun 11, 2005 · N8856Q · Substantial damage
  > The loss of engine power for undetermined reasons and the pilot's failure to maintain adequate airspeed which resulted in a stall.
- [NTSB DFW05CA094](https://openairdocs.org/ntsb/DFW05CA094.md): Grumman G-164A · Tuckerman, AR · Accident · No injuries · Data collection · Final report · Feb 25, 2005 · N8501H · Substantial damage
  > The loss of engine power as result of the failure of the number nine cylinder.
- [NTSB FTW04LA182](https://openairdocs.org/ntsb/FTW04LA182.md): Gulfstream-Schweizer G-164B · Eagle Lake, TX · Accident · No injuries · Limited investigation · Final report · Jul 12, 2004 · N8222K · Substantial damage
  > The loss of engine power for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB SEA04LA125](https://openairdocs.org/ntsb/SEA04LA125.md): Schweizer G-164B · Wendell, ID · Accident · No injuries · Limited investigation · Final report · Jul 7, 2004 · N7502Y · Substantial damage
  > A cracked cylinder head which resulted in a loss of engine power while maneuvering. High vegetation was a factor.
- [NTSB FTW04LA150](https://openairdocs.org/ntsb/FTW04LA150.md): Air Tractor AT-301 · Cotton Plant, AR · Accident · No injuries · Limited investigation · Final report · Jun 4, 2004 · N3166U · Substantial damage
  > The loss of engine power due to fuel exhaustion. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW04LA091](https://openairdocs.org/ntsb/FTW04LA091.md): Air Tractor AT-301 · Plain Dealing, LA · Accident · No injuries · Limited investigation · Final report · Mar 13, 2004 · N4359S · Destroyed
  > A loss of engine power due to undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB LAX04LA126](https://openairdocs.org/ntsb/LAX04LA126.md): Grumman-Schweizer G-164B · Tracy, CA · Accident · No injuries · Limited investigation · Final report · Feb 17, 2004 · N6774K · Substantial damage
  > A loss of engine power for undetermined reasons during cruise flight.
- [NTSB FTW03LA204](https://openairdocs.org/ntsb/FTW03LA204.md): Air Tractor AT-301 · Winnsboro, LA · Accident · No injuries · Limited investigation · Final report · Aug 25, 2003 · N301AF · Substantial damage
  > The pilot's inadequate inflight planning, which resulted in a loss of engine power due to fuel exhaustion. A factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI03LA249](https://openairdocs.org/ntsb/CHI03LA249.md): North American AT-6D · Brookings, SD · Accident · No injuries · Limited investigation · Final report · Aug 7, 2003 · N9272K · Substantial damage
  > The inadequate fuel supply for the flight, and the inadequate preflight by the pilot resulting in exhaustion of the fuel supply and subsequent loss of engine power. The tree was a contributing factor.
- [NTSB SEA03LA152](https://openairdocs.org/ntsb/SEA03LA152.md): Rockwell S-2R · Hermiston, OR · Accident · No injuries · Limited investigation · Final report · Jul 21, 2003 · N4250X · Substantial damage
  > The pilot's inadequate in-flight decision by failing to refuel, resulting in fuel exhaustion and the loss of power. Rocky terrain was a factor.
- [NTSB LAX03LA158](https://openairdocs.org/ntsb/LAX03LA158.md): Ayres S2R-T34 · Willows, CA · Accident · No injuries · Limited investigation · Final report · May 21, 2003 · N5653X · Substantial damage
  > A loss of engine power for an undetermined reason during an aerial application.
- [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 CHI02LA238](https://openairdocs.org/ntsb/CHI02LA238.md): Schweizer G-164B · Sturgis, MI · Accident · No injuries · Limited investigation · Final report · Aug 7, 2002 · N8444K · Substantial damage
  > The failure of the turbine section of the engine, and the unsuitable terrain encountered for the forced landing. The low altitude was a factor.
- [NTSB CHI02CA224](https://openairdocs.org/ntsb/CHI02CA224.md): Air Tractor AT-301 · Malta, IL · Accident · Minor injuries · Data collection · Final report · Jul 26, 2002 · N2326S · Substantial damage
  > The probable cause of this accident was fuel exhaustion, due to a failure to properly compute initial fuel quantity and/or fuel consumption.
- [NTSB MIA02LA135](https://openairdocs.org/ntsb/MIA02LA135.md): Aero Commander S2R · Cochran, GA · Accident · No injuries · Limited investigation · Final report · Jul 17, 2002 · N8943Q · Substantial damage
  > A loss of power while conducting aerial application to cotton crops due to failure of a magneto housing, and the resultant emergency descent and landing to an unsuitable field, causing the collision with a tree.
- [NTSB FTW02LA152](https://openairdocs.org/ntsb/FTW02LA152.md): Grumman-Schweizer G-164A · Hathaway, LA · Accident · No injuries · Limited investigation · Final report · May 17, 2002 · N48533 · Substantial damage
  > the loss of engine power for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI02LA133](https://openairdocs.org/ntsb/CHI02LA133.md): Rockwell S-2R · Bancroft, WI · Accident · No injuries · Limited investigation · Final report · May 10, 2002 · N4224X · Substantial damage
  > The loss of engine power due to contamination of the fuel system from an unknown source and the blocked fuel filter. The rough terrain was a factor.
- [NTSB ATL02FA072](https://openairdocs.org/ntsb/ATL02FA072.md): North American T-6-AT6D · Gainesville, GA · Accident · 2 fatal · Field investigation · Final report · Apr 1, 2002 · N7471C · Substantial damage
  > A loss of engine power following a supercharger bearing failure and subsequent collision with the ground while maneuvering for an emergency landing.
- [NTSB FTW01LA209](https://openairdocs.org/ntsb/FTW01LA209.md): Grumman G-164A · Eagle Lake, TX · Accident · No injuries · Limited investigation · Final report · Sep 19, 2001 · N73PB · Destroyed
  > the partial loss of engine power for an undetermined reason, which resulted in an in flight collision with trees and terrain.
- [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 ATL01LA100](https://openairdocs.org/ntsb/ATL01LA100.md): Rockwell S2R · Bentonia, MS · Accident · No injuries · Limited investigation · Final report · Aug 29, 2001 · N8438V · Substantial damage
  > The loss of engine power due to the loss of throttle cable continunity. The throttle cable linkage was worn beyond servicable limits. A factor was uneven terrain at the emergency landing site.
- [NTSB ATL01LA099](https://openairdocs.org/ntsb/ATL01LA099.md): Air Tractor AT-401 · Batesville, MS · Accident · Minor injuries · Limited investigation · Final report · Aug 28, 2001 · N91922 · Destroyed
  > The loss of engine power for undetermined reasons. A factor was the lack of suitable terrain for an emergency landing.
- [NTSB SEA01LA146](https://openairdocs.org/ntsb/SEA01LA146.md): Rockwell S-2R · Latah, WA · Accident · No injuries · Limited investigation · Final report · Aug 4, 2001 · N4237X · Substantial damage
  > the failure of a cylinder head exhaust rocker shaft boss while the aircraft was performing aerial application. Factors include soft terrain and a drop-off in the field where the emergency landing took place.
- [NTSB MIA01LA204](https://openairdocs.org/ntsb/MIA01LA204.md): Grumman-Schweizer G-164B · Edison, GA · Accident · Minor injuries · Limited investigation · Final report · Jul 31, 2001 · N6816Q · Substantial damage
  > Partial loss of engine power for undetermined reasons during takeoff resulting in the airplane descending, colliding with the ground, and nosing over.
- [NTSB CHI01LA242](https://openairdocs.org/ntsb/CHI01LA242.md): Ag-Cat G-164B · Wallace, NE · Accident · No injuries · Limited investigation · Final report · Jul 26, 2001 · N80083 · Substantial damage
  > The inadequate preflight planning by the pilot, the pilot initiating the flight with an inadequate fuel supply, and the unsuitable terrain encountered during the forced landing. Factors were the fuel exhaustion, the low altitude and the soft field.
- [NTSB MIA01LA099](https://openairdocs.org/ntsb/MIA01LA099.md): Grumman G-164A · Poplarville, MS · Accident · No injuries · Limited investigation · Final report · Mar 13, 2001 · N5076 · Substantial damage
  > a loss of engine power due to a cracked number 2 cylinder which resulted in a forced landing, subsequent impact with the runway, departure from the runway down an embankment, soft terrain and nose over.
- [NTSB FTW00LA209](https://openairdocs.org/ntsb/FTW00LA209.md): Grumman-Schweizer G-164B · Kaplan, LA · Accident · No injuries · Limited investigation · Final report · Jul 13, 2000 · N8151K · Substantial damage
  > The loss of engine power for an undetermined reason. A factor was the lack of suitable terrain for the forced landing.
- [NTSB LAX00LA199](https://openairdocs.org/ntsb/LAX00LA199.md): Grumman G-164A · Biggs, CA · Accident · No injuries · Limited investigation · Final report · May 18, 2000 · N5335 · Substantial damage
  > The broken exhaust valve rocker arm of the number 3 cylinder that resulted in a total loss of engine power during an aerial application flight.
- [NTSB LAX00LA162](https://openairdocs.org/ntsb/LAX00LA162.md): Schweizer G-164B · Lodi, CA · Accident · Minor injuries · Limited investigation · Final report · Apr 20, 2000 · N3629F · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB LAX00LA105](https://openairdocs.org/ntsb/LAX00LA105.md): Ayres · Elko, NV · Accident · Minor injuries · Limited investigation · Final report · Feb 18, 2000 · N4011Y · Substantial damage
  > the loss of engine power for undetermined reasons. A contributing factor was the lack of suitable terrain for the ensuing forced landing.
- [NTSB FTW99LA225](https://openairdocs.org/ntsb/FTW99LA225.md): Rockwell S-2R · Dermott, AR · Accident · No injuries · Limited investigation · Final report · Aug 16, 1999 · N4896X · Substantial damage
  > The loss of engine power for undetermined reasons. A factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI99LA268](https://openairdocs.org/ntsb/CHI99LA268.md): Air Tractor AT-401B · Edelstein, IL · Accident · Serious injuries · Limited investigation · Final report · Jul 31, 1999 · N61775 · Substantial damage
  > an inadequate fuel supply which resulted in fuel exhaustion. Factors associated with the accident were the low altitude at which the power loss occurred and the corn crop the airplane contacted.
- [NTSB SEA99LA125](https://openairdocs.org/ntsb/SEA99LA125.md): Rockwell S-2R · American Falls, ID · Accident · Minor injuries · Limited investigation · Final report · Jul 23, 1999 · N3649X · Substantial damage
  > A loss of engine power for undetermined reasons, and overload of the (right) main landing gear. A contributing factor was the rough terrain.
- [NTSB MIA99LA203](https://openairdocs.org/ntsb/MIA99LA203.md): Air Tractor 301 · Drew, MS · Accident · No injuries · Limited investigation · Final report · Jul 23, 1999 · N2368R · Substantial damage
  > a loss of engine power due to the failure of cylinder No. 4 boss, which was caused by fatigue cracking, resulting in a forced landing in marshy terrain and subsequent nose over.
- [NTSB SEA99LA075](https://openairdocs.org/ntsb/SEA99LA075.md): Air Tractor AT-401 · Jerome, ID · Accident · No injuries · Limited investigation · Final report · May 27, 1999 · N6024M · Substantial damage
  > Fuel exhaustion. Carburetor contamination and rough terrain were factors.

Next page: https://openairdocs.org/ntsb.md?engine=52016&occurrence=350&page=2

## 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')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 350))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52016&occurrence=350

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