# NTSB investigations: Pratt & Whitney R-985 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 2 · 59 cases

## Latest cases

- [NTSB NYC07LA207](https://openairdocs.org/ntsb/NYC07LA207.md): Grumman G-164A · Goshen, NY · Accident · No injuries · Limited investigation · Final report · Sep 1, 2007 · N6578 · Substantial damage
  > A loss of engine power during cruise flight for undetermined reasons.
- [NTSB ANC06LA112](https://openairdocs.org/ntsb/ANC06LA112.md): Beech BE-18 · Culebra, PR · Accident · No injuries · Limited investigation · Final report · Aug 8, 2006 · N498BH · Substantial damage
  > A loss of engine power due to fuel starvation/exhaustion in all engines for an undetermined reason during cruise flight, which resulted in a forced landing and ditching.
- [NTSB CHI06LA147](https://openairdocs.org/ntsb/CHI06LA147.md): Allied Ag Cat Productions G-164A · Gonvick, MN · Accident · Minor injuries · Limited investigation · Final report · Jun 2, 2006 · N600T · Substantial damage
  > The aborted takeoff not performed by the pilot. A contributing factor is the reported loss of takeoff performance.
- [NTSB NYC06LA142](https://openairdocs.org/ntsb/NYC06LA142.md): Weatherly 201B · Southampton, NJ · Accident · Minor injuries · Limited investigation · Final report · May 31, 2006 · N1281W · Substantial damage
  > The failure of the engine's supercharger, which resulted in a loss of engine power, and subsequent forced landing.
- [NTSB LAX06LA169](https://openairdocs.org/ntsb/LAX06LA169.md): Grumman G-164B · Tracy, CA · Accident · No injuries · Limited investigation · Final report · May 15, 2006 · N8981H · Substantial damage
  > loss of power for undetermined reasons.
- [NTSB CHI05LA214](https://openairdocs.org/ntsb/CHI05LA214.md): Grumman G-164 · Marshalltown, IA · Accident · Minor injuries · Limited investigation · Final report · Aug 7, 2005 · N636U · Substantial damage
  > The loss of engine power for an undetermined reason. A factor was the corn crop.
- [NTSB CHI05LA213](https://openairdocs.org/ntsb/CHI05LA213.md): Weatherly 620-B · Osage, IA · Accident · Serious injuries · Limited investigation · Final report · Aug 6, 2005 · N6305W · Destroyed
  > The partial loss of engine power for an undetermined reason. Contributing factors were the wires and the trees.
- [NTSB CHI05LA176](https://openairdocs.org/ntsb/CHI05LA176.md): Schweizer G-164B · Buxton, ND · Accident · No injuries · Limited investigation · Final report · Jul 7, 2005 · N6631Q · Substantial damage
  > A loss of engine power on takeoff due to undetermined reasons. A factor was the ditch that the airplane contacted during the forced landing.
- [NTSB DFW05CA132](https://openairdocs.org/ntsb/DFW05CA132.md): Weatherly 201B · Tornillo, TX · Accident · Minor injuries · Data collection · Final report · May 24, 2005 · N1284W · Substantial damage
  > The loss of engine power as result of the failure of a cylinder.
- [NTSB CHI05LA104](https://openairdocs.org/ntsb/CHI05LA104.md): Weatherly 620B · Downs, KS · Accident · Minor injuries · Limited investigation · Final report · Apr 20, 2005 · N9026F · Substantial damage
  > The loss of engine power due to the failure of the number two cylinder which was the result of the maintenance facility's failure to detect the fatigue crack in the number two cylinder during the engine overhaul. A factor to the accident was the soft field.
- [NTSB CHI04LA184](https://openairdocs.org/ntsb/CHI04LA184.md): Grumman G-164B · York, NE · Accident · Serious injuries · Limited investigation · Final report · Jul 16, 2004 · N48675 · Destroyed
  > A loss of engine power for undetermined reasons. Contributing to the accident were the low altitude at the time of power loss and the unsuitable landing area encountered during the forced landing.
- [NTSB ATL03LA118](https://openairdocs.org/ntsb/ATL03LA118.md): Boeing PT-17 · Hendersonville, NC · Accident · Minor injuries · Limited investigation · Final report · Jul 19, 2003 · N411BT · Substantial damage
  > The pilot's inadequate preflight planning/preparation of fuel required for the flight, resulting in a total loss of engine power due to fuel exhaustion. A factor in the accident was pilot impairment due to alcohol consumption.
- [NTSB MIA02LA150](https://openairdocs.org/ntsb/MIA02LA150.md): Boeing E75 · Leesburg, FL · Accident · Minor injuries · Limited investigation · Final report · Jul 28, 2002 · N1242V · Destroyed
  > Loss of engine power for undetermined reasons during takeoff, resulting in the airplane colliding with the ground and nosing over during the subsequent forced landing.
- [NTSB FTW02LA194](https://openairdocs.org/ntsb/FTW02LA194.md): Grumman-Schweizer G-164A · Basile, LA · Accident · No injuries · Limited investigation · Final report · Jul 1, 2002 · N8917H · Substantial damage
  > the loss of engine power as a result of fuel starvation. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI02LA132](https://openairdocs.org/ntsb/CHI02LA132.md): Grumman-Schweizer G-164B · Hordville, NE · Accident · No injuries · Limited investigation · Final report · May 10, 2002 · N48485 · Substantial damage
  > A loss of engine power due to a fractured rocker arm shaf. Contributing to the accident was the soft, furrowed field.
- [NTSB FTW01LA177](https://openairdocs.org/ntsb/FTW01LA177.md): Grumman-Schweizer G-164B · Bunkie, LA · Accident · Minor injuries · Limited investigation · Final report · Aug 9, 2001 · N542KG · Destroyed
  > The loss of engine power for undetermined reasons while maneuvering. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB SEA01LA031](https://openairdocs.org/ntsb/SEA01LA031.md): de Havilland DHC-2 Mk. I · Kirkland, WA · Accident · No injuries · Limited investigation · Final report · Dec 22, 2000 · N2502 · Substantial damage
  > A malfunction of the aircraft's fuel selector valve and subsequent fuel starvation. Factors included a short emergency landing area, a wet landing surface, and a fence.
- [NTSB CHI00LA285](https://openairdocs.org/ntsb/CHI00LA285.md): Boeing Stearman B75N1 · Cape Girardeau, MO · Accident · No injuries · Limited investigation · Final report · Sep 2, 2000 · N66607 · Substantial damage
  > the pilot's improper decision to continue the flight when the fuel sight gauge indicated empty and the exhausted fuel supply. A factor was the corn crop.
- [NTSB LAX00LA246](https://openairdocs.org/ntsb/LAX00LA246.md): Grumman G-164B · King City, CA · Accident · No injuries · Limited investigation · Final report · Jul 3, 2000 · N48456 · Destroyed
  > The loss of engine power for undetermined reasons.
- [NTSB ATL99LA133](https://openairdocs.org/ntsb/ATL99LA133.md): Grumman-Schweizer G-164B · Enterprise, AL · Accident · Minor injuries · Limited investigation · Final report · Sep 19, 1999 · N6736Q · Destroyed
  > The loss of engine power for undetermined reasons. Contributing to the severity of the accident was the in-flight collision with a tree during the forced landing.
- [NTSB CHI99LA254](https://openairdocs.org/ntsb/CHI99LA254.md): Beech G18S · Minneapolis, MN · Accident · No injuries · Limited investigation · Final report · Jul 23, 1999 · N621KE · Substantial damage
  > the premature gear retraction and proper runway alignment not maintained during takeoff by the pilot. An additional cause was the proper descent rate not maintained by the pilot. Contributing factors were the carburetor icing conditions
- [NTSB MIA99FA114](https://openairdocs.org/ntsb/MIA99FA114.md): Grumman G-21A · Lauderdale Lake, FL · Accident · 1 fatal · Field investigation · Final report · Mar 25, 1999 · N5548A · Destroyed
  > The pilots failure to correctly identify an in-flight emergency (fluctuating manifold pressure and rpm due to a disconnected spark plug lead / unscrewed ignition lead shroud) and failure to complete the engine shutdown procedure once it was initiated…
- [NTSB MIA99LA041](https://openairdocs.org/ntsb/MIA99LA041.md): Grumman-Schweizer G-164B · Fort Gains, GA · Accident · No injuries · Limited investigation · Final report · Dec 1, 1998 · N6630Q · Substantial damage
  > a power loss due to internal damage to the second- and third- stage turbine rotor blades, due to thermal heat, rendering the engine incapable of producing full power, resulting in a forced landing, and subsequent impact with the terrain.
- [NTSB FTW98LA410](https://openairdocs.org/ntsb/FTW98LA410.md): Grumman G-164A · Mart, TX · Accident · No injuries · Limited investigation · Final report · Sep 25, 1998 · N983X · Substantial damage
  > The loss of engine power for an undetermined reason. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW98LA249](https://openairdocs.org/ntsb/FTW98LA249.md): Grumman G-164A · Iowa, LA · Accident · No injuries · Limited investigation · Final report · May 29, 1998 · N8629H · Substantial damage
  > partial loss of engine power during takeoff for undetermined reason(s). The obstructions (trees & dirt bank) were related factors.
- [NTSB FTW98LA193](https://openairdocs.org/ntsb/FTW98LA193.md): Lerille P & W 1937 · Lafayette, LA · Accident · Serious injuries · Limited investigation · Final report · Apr 25, 1998 · N546R · Substantial damage
  > The fuel exhaustion due to the pilot's failure to refuel. A factor was the lack of suitable terrain for the forced landing.
- [NTSB SEA98LA038](https://openairdocs.org/ntsb/SEA98LA038.md): Grumman-Schweizer G-164B · Stanwood, WA · Accident · No injuries · Limited investigation · Final report · Feb 19, 1998 · N48493 · Substantial damage
  > The pilot's failure to apply carburetor heat. Factors included carburetor icing conditions and soft terrain in the forced landing area.
- [NTSB NYC98LA044](https://openairdocs.org/ntsb/NYC98LA044.md): Consolidated-Vultee BT-13A · Oxford, CT · Accident · Minor injuries · Limited investigation · Final report · Dec 18, 1997 · N67868 · Substantial damage
  > The loss of power for undetermined reasons.
- [NTSB FTW98LA007](https://openairdocs.org/ntsb/FTW98LA007.md): Beech G18S · Crosbyton, TX · Accident · Serious injuries · Limited investigation · Final report · Oct 6, 1997 · N9312Y · Substantial damage
  > Inadequate maintenance which resulted in diminished carburetor heat effectiveness due to missing alternate air doors. Contributing were conducive carburetor icing weather conditions, low ceilings during the emergency descent, and the lack of suitable terrain…
- [NTSB ANC97LA090](https://openairdocs.org/ntsb/ANC97LA090.md): Beech D18S · Willow, AK · Accident · No injuries · Limited investigation · Final report · Jun 25, 1997 · N765D · Destroyed
  > The loss of engine power for an undetermined reason.
- [NTSB LAX96LA153](https://openairdocs.org/ntsb/LAX96LA153.md): Naval Aircraft Factory N3N-3 · Chandler, AZ · Accident · No injuries · Limited investigation · Final report · Apr 3, 1996 · N45043 · Substantial damage
  > The failure of both the engine driven and hand wobble fuel pumps, which resulted in fuel starvation to the engine.
- [NTSB LAX96LA101](https://openairdocs.org/ntsb/LAX96LA101.md): Boeing A75 · Barstow, CA · Accident · No injuries · Limited investigation · Final report · Jan 27, 1996 · N1359N · Substantial damage
  > a loss of engine power for an undetermined reason(s).
- [NTSB CHI95LA250](https://openairdocs.org/ntsb/CHI95LA250.md): Grumman G-164 · Park River, ND · Accident · No injuries · Limited investigation · Final report · Jul 27, 1995 · N949X · Substantial damage
  > the loss of power due to the primary lead in the left magneto being grounded against the case, and the improper clearance of the breaker point gaps. A factor was the lack of suitable terrain on which to perform the forced landing.
- [NTSB FTW95LA254](https://openairdocs.org/ntsb/FTW95LA254.md): Grumman G-164A · Cash, AR · Accident · No injuries · Limited investigation · Final report · Jun 17, 1995 · N4562 · Substantial damage
  > The loss of engine power for undetermined reasons. Factors were the low altitude at which the power loss occurred and the lack of suitable terrain for a forced landing.
- [NTSB SEA95LA119](https://openairdocs.org/ntsb/SEA95LA119.md): Grumman G-164B · Helena, MT · Accident · No injuries · Limited investigation · Final report · Jun 15, 1995 · N6669Q · Destroyed
  > The loss of engine power for undetermined reasons.
- [NTSB SEA95LA094](https://openairdocs.org/ntsb/SEA95LA094.md): Grumman G-164B · Stayton, OR · Accident · Minor injuries · Limited investigation · Final report · May 7, 1995 · N6895Q · Substantial damage
  > A power loss for undetermined reason(s). A factor was the soft terrain.
- [NTSB FTW94LA209](https://openairdocs.org/ntsb/FTW94LA209.md): Grumman G-164A · Parkin, AR · Accident · No injuries · Limited investigation · Final report · Jun 22, 1994 · N6535 · Substantial damage
  > Total power loss for undetermined reasons. A factor was unsuitable terrain for a forced landing.
- [NTSB LAX94LA204](https://openairdocs.org/ntsb/LAX94LA204.md): Beech UC-45J · Acampo, CA · Accident · No injuries · Limited investigation · Final report · Apr 24, 1994 · N35095 · Substantial damage
  > The pilot's failure to use carburetor heat during the extended power-off descent. The existing carburetor icing conditions, the pilot's diverted attention, and the power lines were factors in this accident.
- [NTSB ATL94LA084](https://openairdocs.org/ntsb/ATL94LA084.md): Grumman G-164B · Ozark, AL · Accident · No injuries · Limited investigation · Final report · Apr 20, 1994 · N48717 · Substantial damage
  > A loss of engine power for undetermined reasons. A factor was the soft terrain.
- [NTSB FTW93LA153](https://openairdocs.org/ntsb/FTW93LA153.md): Grumman G-164B · Arnaudville, LA · Accident · No injuries · Limited investigation · Final report · May 12, 1993 · N6639Q · Substantial damage
  > The loss of engine power for undetermined reasons. A factor was the unsuitable terrain
- [NTSB FTW92LA003](https://openairdocs.org/ntsb/FTW92LA003.md): Beech C-45H · Edinburg, TX · Accident · No injuries · Limited investigation · Final report · Oct 6, 1991 · N166ZA · Substantial damage
  > Power loss due to a loss of oil pressure for undetermined reasons. A factor was the lack of suitable terrain for forced landing.
- [NTSB LAX91LA228](https://openairdocs.org/ntsb/LAX91LA228.md): Beech C-45H · Lake Elsinore, CA · Accident · No injuries · Limited investigation · Final report · May 29, 1991 · N9903Z · Substantial damage
  > Fuel starvation due to an improper modification of the fuel system and the pilot's failure to ensure that the aircraft was airworthy prior to flight.
- [NTSB FTW90DPA01](https://openairdocs.org/ntsb/FTW90DPA01.md): Grumman G-164B · Bonham, TX · Accident · No injuries · Final report · Apr 4, 1990 · N48372 · Substantial damage
  > A power loss for undetermined reasons. A factor was the lack of suitable terrain for the forced landing.
- [NTSB LAX89LA218](https://openairdocs.org/ntsb/LAX89LA218.md): de Havilland DHC-2 · Trinity Center, CA · Accident · No injuries · Limited investigation · Final report · Jun 17, 1989 · N1215 · Substantial damage
  > An interruption of fuel to the engine for undetermined reasons.
- [NTSB FTW87DRD14](https://openairdocs.org/ntsb/FTW87DRD14.md): Grumman G-164B · Oak Grove, LA · Accident · No injuries · Final report · Aug 12, 1987 · N48614 · Substantial damage
  > After completing the last pass of an agricultural operation the pilot pulled up and started a turn. At this time the engine started shaking and losing power. The pilot attempted a forced landing in a soft field. The wheels bogged four or five inches into the…
- [NTSB ATL87LA184](https://openairdocs.org/ntsb/ATL87LA184.md): Grumman G-164A · Cottonwood, AL · Accident · No injuries · Limited investigation · Final report · Jun 21, 1987 · N7687 · Substantial damage
  > The plt stated that everything was normal for the acft during the preflt and runup. He had just about completed his first swath run when he reptd that the engine shook a little and started backfiring. He pulled up and started across a swamp toward a paved…
- [NTSB MKC86LA114](https://openairdocs.org/ntsb/MKC86LA114.md): Grumman-Schweizer G-164A · Winona, KS · Accident · No injuries · Limited investigation · Final report · May 20, 1986 · N6680Q · Substantial damage
  > The pilot stated that he borrowed the airplane from his father to practice takeoffs and landings at his father's private, crop dusting airstrip. There were no chemicals onboard, according to the pilot. He further stated that on a go-around maneuver, and as he…
- [NTSB ATL85LA233](https://openairdocs.org/ntsb/ATL85LA233.md): Schweizer G-164B · Leesburg, GA · Accident · No injuries · Limited investigation · Final report · Aug 4, 1985 · N48562 · Substantial damage
  > The aircraft suffered a loss of power due to water in fuel and made an emergency landing in a field. During landing roll the aircraft collided with trees at the end of the field.
- [NTSB DEN85LA018](https://openairdocs.org/ntsb/DEN85LA018.md): Beech C-45H · Heber City, UT · Accident · No injuries · Limited investigation · Final report · Oct 25, 1984 · N9561Z · Substantial damage
  > While in cruise flt, plt noted gradual left eng oil press drop from normal 70 PSI to 20 PSI. Plt shut down left eng, feathered prop and diverted to alternate airport. En route to alternate plt attempted to restart left eng to avoid single-engine landing. Plt…
- [NTSB MKC83LA138](https://openairdocs.org/ntsb/MKC83LA138.md): Grumman G-164A · Poplar Bluff, MO · Accident · Minor injuries · Limited investigation · Final report · Jun 28, 1983 · N7246 · Destroyed
  > After making 2 swath runs, the acft was in a procedure turn-around over a wooded area when the eng lost power. The plt tried to glide to a suitable area, but the acft hit the tops of trees & crashed. The owner stated the eng had a history of maintenance…

Next page: https://openairdocs.org/ntsb.md?engine=52008&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 ('52008')
    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=52008&occurrence=350

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