# NTSB investigations: Pratt & Whitney R-985 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. ## Latest cases - [NTSB DEN07LA122](https://openairdocs.org/ntsb/DEN07LA122.md): Beech C-45H · Longmont, CO · Accident · Serious injuries · Limited investigation · Final report · Jul 19, 2007 · N9562Z · Destroyed > The instructor pilot's improper preflight in that he failed to close the rocker box recovery system drain valves, resulting in a total loss of lubricating oil and subsequent oil starvation to both engines. A contributing factor was the trees. - [NTSB CHI03LA274](https://openairdocs.org/ntsb/CHI03LA274.md): Boeing A-75 · La Crosse, WI · Accident · No injuries · Limited investigation · Final report · Aug 20, 2003 · N806RB · Substantial damage > The total loss of engine power due to a fatigue fracture of the engine's crankshaft. A factor was the corn crop. - [NTSB NYC02LA002](https://openairdocs.org/ntsb/NYC02LA002.md): Beech C-45H · Hudson, NH · Accident · Minor injuries · Limited investigation · Final report · Oct 2, 2001 · N8393H · Substantial damage > The pilot/owner's failure to properly identify the inoperative engine prior to feathering the wrong propeller, and his lack of familiarity with the required corrective procedures. A factor was the initial engine failure. - [NTSB LAX00LA345](https://openairdocs.org/ntsb/LAX00LA345.md): Grumman-Schweizer G-164B · Tracy, CA · Accident · No injuries · Limited investigation · Final report · Sep 22, 2000 · N8981H · Substantial damage > Loss of engine power due to failure and separation of the number one connecting rod. - [NTSB DEN00LA072](https://openairdocs.org/ntsb/DEN00LA072.md): Weatherly 201B · Rocky Ford, CO · Accident · Minor injuries · Limited investigation · Final report · Apr 8, 2000 · N1292W · Substantial damage > A total loss of power due to an engine rocker arm failure and soft/unsuitable terrain during the subsequent forced landing. - [NTSB CHI96LA281](https://openairdocs.org/ntsb/CHI96LA281.md): Grumman-Schweizer G-164 · Grant, NE · Accident · No injuries · Limited investigation · Final report · Aug 7, 1996 · N8842H · Substantial damage > fatigue failure and subsequent catastrophic failure of the number nine cylinder. A factor was the corn. - [NTSB CHI96LA186](https://openairdocs.org/ntsb/CHI96LA186.md): Grumman-Schweizer G-164B · Crookston, MN · Accident · No injuries · Limited investigation · Final report · May 25, 1996 · N48518 · Substantial damage > catastrophic engine failure. - [NTSB LAX96LA124](https://openairdocs.org/ntsb/LAX96LA124.md): Schweizer G-164B · Tracy, CA · Accident · No injuries · Limited investigation · Final report · Feb 21, 1996 · N6674Q · Substantial damage > overheating and failure of the engine's master rod and master rod bearing due to oil starvation. A factor relating to the accident was: the lack of suitable terrain for an emergency landing. - [NTSB FTW95LA392](https://openairdocs.org/ntsb/FTW95LA392.md): Grumman G-164B · Springlake, TX · Accident · No injuries · Limited investigation · Final report · Jun 8, 1995 · N211JM · Substantial damage > The loss of engine power due to the uncontained failure of the third stage turbine wheel. A factor was the lack of suitable terrain for the forced landing. - [NTSB LAX95LA127](https://openairdocs.org/ntsb/LAX95LA127.md): Boeing B75N1 · Gaviota, CA · Accident · No injuries · Limited investigation · Final report · Mar 5, 1995 · N450SR · Substantial damage > inadequate maintenance and service of the aircraft's carburetor heat system, and the pilot's intentional flight into adverse weather conditions. The lack of a suitable area for the emergency landing was a factor. - [NTSB CHI95LA075](https://openairdocs.org/ntsb/CHI95LA075.md): Beech C45H · New Hudson, MI · Accident · No injuries · Limited investigation · Final report · Jan 24, 1995 · N618K · Substantial damage > The owner/pilot's inadequate maintenance practices which resulted in a loss of engine power shortly after takeoff and the pilot's inadequate emergency procedure after the power loss occurred. Related factors are trees, diminished airspeed and abrupt touchdown. - [NTSB CHI93LA303](https://openairdocs.org/ntsb/CHI93LA303.md): Schweizer G167B · Borup, MN · Accident · No injuries · Limited investigation · Final report · Jul 27, 1993 · N6637Q · Substantial damage > the loss of engine power due to a cracked cylinder head. - [NTSB DCA92MA048](https://openairdocs.org/ntsb/DCA92MA048.md): Beech C-45H · Hinckley, IL · Accident · 12 fatal · Major investigation · Final report · Sep 7, 1992 · N3657G · Destroyed > Inadequate maintenance and inspection by the operator which resulted in an engine power loss during the critical takeoff phase of flight. In addition, the pilot did not, or was unable to, attain a full-feather position on the left engine propeller, which… - [NTSB CHI92DEE04](https://openairdocs.org/ntsb/CHI92DEE04.md): Weatherly 201B · Chana, IL · Accident · No injuries · Final report · Sep 5, 1992 · N2935W · Substantial damage > Fracture of a connecting rod resulting in loss of engine power. - [NTSB FTW92DPG14](https://openairdocs.org/ntsb/FTW92DPG14.md): Air Tractor AT-300 · Wilmont, AR · Accident · No injuries · Final report · Aug 12, 1992 · N4420S · Substantial damage > Power loss due to a failed cracked cylinder. A factor was the lack of suitable terrain for the forced landing. - [NTSB CHI92DCJ05](https://openairdocs.org/ntsb/CHI92DCJ05.md): Grumman-Schweizer G-164B · Atkinson, NE · Accident · No injuries · Final report · Aug 11, 1992 · N48672 · Substantial damage > A cracked engine cylinder. - [NTSB ATL92LA154](https://openairdocs.org/ntsb/ATL92LA154.md): Weatherly 620A · Cobb, GA · Accident · Minor injuries · Limited investigation · Final report · Aug 9, 1992 · N4650W · Substantial damage > The corroded, and separated, magnetic chip detector plug which allowed the loss of all engine oil and the engine's subsequent seizure. Factors were the inadequate 100 hour inspection, and the high vegetation in the forced landing field. - [NTSB FTW92LA101](https://openairdocs.org/ntsb/FTW92LA101.md): Weatherly 201B · Weatherford, OK · Accident · No injuries · Limited investigation · Final report · Mar 30, 1992 · N1268W · Substantial damage > Fuel starvation due to a mechanical failure of the fuel selector. A factor was the lack of suitable terrain. - [NTSB LAX92LA042](https://openairdocs.org/ntsb/LAX92LA042.md): Beech D18S · Hilo, HI · Accident · No injuries · Limited investigation · Final report · Nov 10, 1991 · N4193 · Substantial damage > The aircraft's lack of single engine performance to maintain altitude after the engine lost power. Factors related to the accident were: displacement/mechanical interference within the accessory drive gear system of the left engine, failure of the left engine… - [NTSB ANC90LA098](https://openairdocs.org/ntsb/ANC90LA098.md): De Havilland DHC-2 · Caribou Lake, AK · Accident · No injuries · Limited investigation · Final report · Jun 27, 1990 · N5147G · Substantial damage > A power loss caused by the failure of a piston cylinder. - [NTSB MKC89LA148](https://openairdocs.org/ntsb/MKC89LA148.md): Grumman G-164B · Stockville, NE · Accident · No injuries · Limited investigation · Final report · Jul 2, 1989 · N6629Q · Substantial damage > Total failure of the powerplant caused by a broken cylinder. - [NTSB ANC89LA103](https://openairdocs.org/ntsb/ANC89LA103.md): De Havilland DHC-2 · Iliamna, AK · Accident · Serious injuries · Limited investigation · Final report · Jun 24, 1989 · N5595M · Substantial damage > Inadequate annual inspection by maintenance personnel. - [NTSB FTW89DRD06](https://openairdocs.org/ntsb/FTW89DRD06.md): Grumman-Schweizer G-164B · Ville Platte, LA · Accident · No injuries · Final report · Jun 6, 1989 · N6693Q · Substantial damage > Wear and/or failure of the carburetor/float. Factors related to the accident were: the terrain conditions. - [NTSB MKC88LA133](https://openairdocs.org/ntsb/MKC88LA133.md): Grumman 164A · Poplar Bluff, MO · Accident · No injuries · Limited investigation · Final report · Jul 19, 1988 · N8706H · Substantial damage > The pilot experienced an engine failure while attempting to land during an aerial application flight. Altitude was not adequate to select a suitable forced landing area. The aircraft impacted in a pipeline right of way and came to rest in a small stream,… - [NTSB SEA87LA121](https://openairdocs.org/ntsb/SEA87LA121.md): Grumman G-164A · Viola, ID · Accident · No injuries · Limited investigation · Final report · Jun 24, 1987 · N5285 · Substantial damage > During an aerial applications maneuver a total loss of power occurred due to the internal failure of the supercharger impeller. During the forced landing the left main gear collapsed causing the aircraft to nose over inverted. - [NTSB CHI87DEX07](https://openairdocs.org/ntsb/CHI87DEX07.md): Boeing E75 · Mccordsville, IN · Accident · Serious injuries · Final report · Jun 19, 1987 · N550LR · Destroyed > During initial climb the engine sustained a total power failure and the pilot attempted to return to the airport. The aircraft impacted in a soybean field approximately 200 feet short of the runway in a 20 degree nose down attitude. Investigation revealed the… - [NTSB LAX86DVA05](https://openairdocs.org/ntsb/LAX86DVA05.md): Grumman G164A · Snelling, CA · Accident · No injuries · Final report · Apr 5, 1986 · N8932H · Destroyed > The plt stated he had just lifted off during takeoff when the eng quit. The acft then stalled, hitting a canal and shearing off the main landing gear. The plt stated that a broken fuel line is suspect due to the sudden stoppage and intense ground fire. The… - [NTSB NYC86FHM02](https://openairdocs.org/ntsb/NYC86FHM02.md): Grumman 164-A · Walden, NY · Accident · Serious injuries · Final report · Nov 18, 1985 · N7236 · Destroyed > The pilot of a Grumman 164A was crop dusting when he experienced an engine failure. He decided not to dump the load due to possible later repercussions. The aircraft lacked sufficent airspeed or altitude to make a safe landing. The aircraft received… - [NTSB FTW85LA142](https://openairdocs.org/ntsb/FTW85LA142.md): Beech E18S · Pharr, TX · Accident · No injuries · Limited investigation · Final report · Mar 10, 1985 · N352B · Substantial damage > The plt took off at about 0600 CST on a local test flt following an eng change. He received a special VFR clearance from the control tower, but did not obtain an IFR clearance. At 0605, the wx at mcallen, TX was in part: 500 ft obscured, visibility 2 mi, wind… - [NTSB DEN84LA235](https://openairdocs.org/ntsb/DEN84LA235.md): Grumman G-164A · Chamerlain, SD · Accident · No injuries · Limited investigation · Final report · Jul 25, 1984 · N4593 · Substantial damage > The pilot experienced an engine failure and executed an emergency landing on a narrow road which resulted in one of the landing gear touching down on the soft shoulder. The landing gear failed and substantial damage resulted. Examination of the engine… - [NTSB DEN84LA204](https://openairdocs.org/ntsb/DEN84LA204.md): Grumman G-164A · Page, ND · Accident · No injuries · Limited investigation · Final report · Jun 29, 1984 · N5332 · Substantial damage > Engine siezed during takeoff climb at alt of aprx 100 ft AGL. Acft contacted trees during the forced landing. Examination of engine turbo section revealed the blower section had separated as a result of bearing failure. According to a mechanic who… - [NTSB FTW84LA236](https://openairdocs.org/ntsb/FTW84LA236.md): Beech D17S · Stratford, TX · Accident · No injuries · Limited investigation · Final report · Feb 7, 1984 · N1038M · Substantial damage > The pilot stated after the accident that the engine failure occurred as the acft climbed through 6500 feet. According to the plt the no. 1 cylinder separated from the radial eng. The acft nosed over during the landing on unimproved terrain. - [NTSB MIA84LA060](https://openairdocs.org/ntsb/MIA84LA060.md): Grumman AG-CAT · Homestead, FL · Accident · Minor injuries · Limited investigation · Final report · Jan 16, 1984 · N6736Q · Destroyed > The acft crashed during a forced landing after the engine lost power. Investigation revealed that that # 8 cylinder failed. The original cracking was determined to be from fatigue. - [NTSB FTW83LA243](https://openairdocs.org/ntsb/FTW83LA243.md): Weatherly 620 · Cornerstone, AR · Accident · No injuries · Limited investigation · Final report · May 17, 1983 · N4619E · Substantial damage > The acft collided with a dirt bank during a forced landing after the engine quit. The plt said he was making a swath runwhen the engine quit. The flagman said he saw black smoke then white smoke as the engine quit. Post crash investigation revealed that the… - [NTSB ATL83FA171](https://openairdocs.org/ntsb/ATL83FA171.md): Boeing A75N1 · Kennesaw, GA · Accident · No injuries · Field investigation · Final report · Apr 27, 1983 · N74189 · Substantial damage > While over a wooded area at 800 ft AGL the eng failed. The plt was unable to reach a suitable landing site before contacting the ground on an embankment below the elevation of a nearby road. The acft struck a telephone cable prior to touchdown. The #4 conrod… ## 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" = 351)) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=52008&occurrence=351 --- 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.