# NTSB investigations: Pratt & Whitney R1340 series: Loss of engine power(total) - mech failure/malf

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 · 115 cases

## Latest cases

- [NTSB CHI07LA219](https://openairdocs.org/ntsb/CHI07LA219.md): North American T-6G · Fond Du Lac, WI · Accident · No injuries · Limited investigation · Final report · Jul 23, 2007 · N22NA · Substantial damage
  > The loss of engine power due to the failure of the engine's master connecting rod which resulted in the forced landing. The road sign was a factor.
- [NTSB DEN05LA143](https://openairdocs.org/ntsb/DEN05LA143.md): North American SNJ-5 · Torrington, WY · Accident · No injuries · Limited investigation · Final report · Sep 19, 2005 · N212TC · Substantial damage
  > failure of the #7 connecting rod, causing engine seizure. A contributing factor was the berm.
- [NTSB DFW05IA222](https://openairdocs.org/ntsb/DFW05IA222.md): Air Tractor AT-401 · Winnie, TX · Incident · No injuries · Incident investigation · Final report · Aug 19, 2005 · N4545W · Minor damage
  > The loss of engine power due to the failure of the second-stage turbine wheel as a result of low cycle fatigue.
- [NTSB NYC05LA126](https://openairdocs.org/ntsb/NYC05LA126.md): Grumman G-164A · Felton, DE · Accident · No injuries · Limited investigation · Final report · Aug 1, 2005 · N5495 · Substantial damage
  > The mechanic's inadequate annual inspection, and failure to comply with an airworthiness directive, which resulted in a total failure of the second stage turbine rotor.
- [NTSB FTW04CA246](https://openairdocs.org/ntsb/FTW04CA246.md): Grumman G-164A · Gilbert, LA · Accident · No injuries · Data collection · Final report · Sep 28, 2004 · N8661H · Substantial damage
  > The failure of a piston connecting rod for undetermined reasons resulting in the loss of engine power. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW04LA227](https://openairdocs.org/ntsb/FTW04LA227.md): Grumman 164B · East Bernard, TX · Accident · No injuries · Limited investigation · Final report · Aug 31, 2004 · N8222K · Substantial damage
  > The loss of engine power as result of the failure of the number four cylinder. A factor was the lack of suitable terrain for the forced landing.
- [NTSB DEN04LA083](https://openairdocs.org/ntsb/DEN04LA083.md): Ayres S-2R · Beaver, UT · Accident · No injuries · Limited investigation · Final report · May 31, 2004 · N5686X · Substantial damage
  > the in-flight failure of the engine's P3 tube which resulted in the loss of engine power and the subsequent impact with terrain during a forced landing. Contributing factors include the lack of suitable terrain for a forced landing and the fence.
- [NTSB ATL03LA122](https://openairdocs.org/ntsb/ATL03LA122.md): Air Tractor AT401B · Girard, GA · Accident · No injuries · Limited investigation · Final report · Jul 30, 2003 · N61227 · Substantial damage
  > A loss of engine power due to the failure of the internal supercharger blower seals.
- [NTSB CHI03LA095](https://openairdocs.org/ntsb/CHI03LA095.md): Air Tractor AT-401 · Knox, IN · Accident · Serious injuries · Limited investigation · Final report · Mar 31, 2003 · N45297 · Substantial damage
  > A loss of engine power due to oil starvation as a result of the failure of the master rod bearing. Contributing factors were the tree line at the edge of the field, and the unsuitable terrain.
- [NTSB SEA02LA123](https://openairdocs.org/ntsb/SEA02LA123.md): Grumman-Schweizer G-164B · Weiser, ID · Accident · No injuries · Limited investigation · Final report · Jul 6, 2002 · N8440K · Substantial damage
  > The fracture of the number 3 cylinder exhaust pushrod resulting in the exhaust valve's inability to open during the exhaust cycle and the subsequent engine stoppage. Contributing factors were the ditch and elevated roadway which the aircraft crossed during…
- [NTSB LAX02LA143](https://openairdocs.org/ntsb/LAX02LA143.md): Grumman-Schweizer G-164C · Olivehurst, CA · Accident · No injuries · Limited investigation · Final report · Apr 25, 2002 · N6702K · Substantial damage
  > Fuel starvation due to the failure of an engine accessory component. A contributing factor was the rough terrain.
- [NTSB FTW02LA107](https://openairdocs.org/ntsb/FTW02LA107.md): Grumman-Schweizer G-164B · Ferriday, LA · Accident · No injuries · Limited investigation · Final report · Mar 28, 2002 · N8498K · Substantial damage
  > the failure of the number three cylinder exhaust rocker arm, resulting in a total loss of engine power. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI01LA286](https://openairdocs.org/ntsb/CHI01LA286.md): Grumman-Schweizer G-164A · Petersburg, NE · Accident · No injuries · Limited investigation · Final report · Aug 16, 2001 · N4598 · Substantial damage
  > The failure of the engine cylinder, and the unsuitable terrain for landing encountered by the pilot. Factors were the low altitude and the muddy field.
- [NTSB FTW01LA178](https://openairdocs.org/ntsb/FTW01LA178.md): Air Tractor AT-401 · Grand Coteau, LA · Accident · No injuries · Limited investigation · Final report · Aug 9, 2001 · N10140 · Substantial damage
  > the loss of engine power while maneuvering, which resulted from a fractured #4 cylinder head at the exhaust valve rocker arm boss. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW01LA156](https://openairdocs.org/ntsb/FTW01LA156.md): Rockwell International S-2R · Sabinal, TX · Accident · Minor injuries · Limited investigation · Final report · Jun 28, 2001 · N4888X · Substantial damage
  > a loss of engine power due to a crack in the #9 cylinder, which result in the failure of the connecting rod during the aerial application flight. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI01LA135](https://openairdocs.org/ntsb/CHI01LA135.md): Air Tractor AT-401 · Warsaw, IL · Accident · No injuries · Limited investigation · Final report · May 12, 2001 · N1008Q · Substantial damage
  > the rocker assembly failure during low level maneuvering. Factors were the soft and sandy terrain and the unsuitable terrain the pilot encountered during the forced landing.
- [NTSB CHI00LA247](https://openairdocs.org/ntsb/CHI00LA247.md): Schweizer G-164B · Wallace, NE · Accident · No injuries · Limited investigation · Final report · Aug 8, 2000 · N3629D · Substantial damage
  > the fractured number three exhaust push rod assembly and the unsuitable terrain encountered by the pilot.
- [NTSB FTW00LA168](https://openairdocs.org/ntsb/FTW00LA168.md): Air Tractor AT-301 · Garwood, TX · Accident · 1 fatal · Limited investigation · Final report · Jun 2, 2000 · N8886S · Substantial damage
  > the loss of engine power in cruise flight as a result of the failure of the right magneto. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW00LA159](https://openairdocs.org/ntsb/FTW00LA159.md): Air Tractor AT-301 · Garwood, TX · Accident · Minor injuries · Limited investigation · Final report · May 30, 2000 · N8594S · Substantial damage
  > The failure of the supercharger seal resulting in the loss of engine power. A factor was the lack of suitable terrain for the forced landing.
- [NTSB SEA00LA082](https://openairdocs.org/ntsb/SEA00LA082.md): Gulfstream-Schweizer G-164B · Ephrata, WA · Accident · No injuries · Limited investigation · Final report · May 4, 2000 · N8130K · Substantial damage
  > Loss of engine power due to failure of the number three cylinder exhaust valve push rod. Soft terrain encountered during the landing roll-out was a factor.
- [NTSB FTW00LA074](https://openairdocs.org/ntsb/FTW00LA074.md): Air Tractor AT-401 · Rayville, LA · Accident · No injuries · Limited investigation · Final report · Jan 25, 2000 · N91968 · Substantial damage
  > The loss of engine power due to a crack in the #6 cylinder. A factor was the lack of suitable terrain for the forced landing.
- [NTSB ATL99LA129](https://openairdocs.org/ntsb/ATL99LA129.md): Air Tractor AT-401 · Caledonia, MS · Accident · No injuries · Limited investigation · Final report · Sep 13, 1999 · N45205 · Substantial damage
  > The failure of the fuel control gear train due to oil contamination. A factor was Inadequate maintenance.
- [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 LAX98LA090](https://openairdocs.org/ntsb/LAX98LA090.md): Air Tractor AT-301 · Wasco, CA · Accident · No injuries · Limited investigation · Final report · Feb 18, 1998 · N3656C · Substantial damage
  > The pilot overboosting the engine on takeoff which resulted in a cracked cylinder and subsequent loss of engine power.
- [NTSB LAX97LA121](https://openairdocs.org/ntsb/LAX97LA121.md): Grumman G-164B · Winters, CA · Accident · No injuries · Limited investigation · Final report · Mar 11, 1997 · N36265 · Substantial damage
  > the failure of the engine cylinder head assembly due to operational fatigue.
- [NTSB FTW96LA341](https://openairdocs.org/ntsb/FTW96LA341.md): Ayres S-2R · Wharton, TX · Accident · No injuries · Limited investigation · Final report · Aug 12, 1996 · N3084X · Substantial damage
  > total loss of engine power due to a fractured torque sensor shaft. Factors relating to the accident were: the obstructions (fence and trees) in the emergency landing area.
- [NTSB MIA96LA183](https://openairdocs.org/ntsb/MIA96LA183.md): Rockwell S2R · Belzoni, MS · Accident · No injuries · Limited investigation · Final report · Jul 13, 1996 · N3695X · Substantial damage
  > fatigue failure of the #5 cylinder skirt, which resulted in debris that caused the oil scavenge pump to fail, oil starvation, cam drive seizure, loss of engine power, and a subsequent forced landing in a field of cotton.
- [NTSB LAX96LA213](https://openairdocs.org/ntsb/LAX96LA213.md): Rockwell S-2R · Lost Hills, CA · Accident · No injuries · Limited investigation · Final report · May 30, 1996 · N8447V · Substantial damage
  > the loss of engine power due to a cylinder failure. A contributing factor was the lack of a suitable field for the forced landing.
- [NTSB MIA96LA122](https://openairdocs.org/ntsb/MIA96LA122.md): Grumman G-164A · Edison, GA · Accident · Minor injuries · Limited investigation · Final report · Apr 18, 1996 · N4238 · Substantial damage
  > Failure of the mounting studs for the No. 4 cylinder, which resulted in separation of the cylinder and loss of engine power. The lack of suitable terrain for a forced landing was a related factor.
- [NTSB FTW96LA135](https://openairdocs.org/ntsb/FTW96LA135.md): Rockwell S-2R · Winchester, AR · Accident · Minor injuries · Limited investigation · Final report · Feb 27, 1996 · N431BL · Substantial damage
  > Failure of the engine master rod. A factor relating to the accident was: the lack of suitable terrain for a forced landing, due to the proximity of a power line and trees.
- [NTSB FTW96LA007](https://openairdocs.org/ntsb/FTW96LA007.md): Grumman G-164A · Hamburg, AR · Accident · Minor injuries · Limited investigation · Final report · Oct 5, 1995 · N9873 · Substantial damage
  > Loss of engine power due to a cylinder failure. A factor relating to the accident was: the lack of suitable terrain for the forced landing.
- [NTSB ATL95LA169](https://openairdocs.org/ntsb/ATL95LA169.md): Air Tractor AT-301 · Plains, GA · Accident · Minor injuries · Limited investigation · Final report · Sep 16, 1995 · N2362D · Substantial damage
  > Failure of the number four cylinder rocker arm housing and pin, which resulted in a closed exhaust valve and loss of engine power.
- [NTSB MIA95LA192](https://openairdocs.org/ntsb/MIA95LA192.md): Schweizer G-164B · Quitman, MS · Accident · No injuries · Limited investigation · Final report · Aug 5, 1995 · N7502A · Substantial damage
  > Improper (low) outflow from the fuel control unit, due to improper maintenance, which resulted in a loss of engine power and a forced landing.
- [NTSB SEA95LA161](https://openairdocs.org/ntsb/SEA95LA161.md): Air Tractor AT-301 · Havre, MT · Accident · No injuries · Limited investigation · Final report · Jul 24, 1995 · N3660U · Substantial damage
  > the loss of power due to a failure of the cylinder head exhaust valve rocker box. The tall crop encountered during the forced landing is a factor.
- [NTSB SEA95LA138](https://openairdocs.org/ntsb/SEA95LA138.md): Grumman G-164A · Burley, ID · Accident · No injuries · Limited investigation · Final report · Jul 8, 1995 · N8946H · Substantial damage
  > A total loss of engine power due to fatigue failure of the crankshaft. A factor in the accident was the lack of suitable terrain for the forced landing.
- [NTSB SEA95LA143](https://openairdocs.org/ntsb/SEA95LA143.md): Aero Commander S2R · Odessa, WA · Accident · No injuries · Limited investigation · Final report · Jul 6, 1995 · N3662X · Substantial damage
  > Loss of engine power due to a cracked cylinder.
- [NTSB CHI95LA198](https://openairdocs.org/ntsb/CHI95LA198.md): Air Tractor AT-301 · Hoxie, KS · Accident · No injuries · Limited investigation · Final report · Jun 11, 1995 · N23477 · Substantial damage
  > the loss of engine power due to the loose nut on the adjustment screw and the jammed exhaust valve on the number three cylinder. A factor in the accident was the ditch.
- [NTSB LAX95LA195](https://openairdocs.org/ntsb/LAX95LA195.md): Grumman G-164B · Robbins, CA · Accident · No injuries · Limited investigation · Final report · May 25, 1995 · N6774K · Substantial damage
  > a loss of engine power due to a separation of the number 6 cylinder, and the nose over during the subsequent forced landing.
- [NTSB FTW95LA213](https://openairdocs.org/ntsb/FTW95LA213.md): Air Tractor AT-301 · Caldwell, AR · Accident · No injuries · Limited investigation · Final report · May 19, 1995 · N3655Z · Substantial damage
  > The loss of power due to a crack in the #4 cylinder. Factors were the lack of suitable terrain for the forced landing and proper touchdown point not possible.
- [NTSB LAX95LA126](https://openairdocs.org/ntsb/LAX95LA126.md): Schweizer G-164A · Robbins, CA · Accident · No injuries · Limited investigation · Final report · Mar 4, 1995 · N5450 · Substantial damage
  > A failure of the engine master rod. A factor in the accident was the soft, wet condition of the field available for the forced landing.
- [NTSB LAX94LA327](https://openairdocs.org/ntsb/LAX94LA327.md): Aero Commander S2R · Firebaugh, CA · Accident · No injuries · Limited investigation · Final report · Aug 19, 1994 · N8843Q · Substantial damage
  > the loss of engine power due to the failure of the number 2 cylinder head. A factor was the dark night conditions which inhibited the pilot's ability to visually detect ground obstructions in the landing area.
- [NTSB FTW94LA256](https://openairdocs.org/ntsb/FTW94LA256.md): Air Tractor AT-401 · Mcgehee, AR · Accident · No injuries · Limited investigation · Final report · Aug 2, 1994 · N45297 · Substantial damage
  > Total loss of engine power as the engine seized due to a blower bearing failure. A factor was the lack of suitable terrain for the forced landing.
- [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 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 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 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 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 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 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.

Next page: https://openairdocs.org/ntsb.md?engine=52016&occurrence=351&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" = 351))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52016&occurrence=351

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