# Fatal NTSB investigations: Loss of engine power(partial) - 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 4 · 155 cases ## Latest cases - [NTSB NYC08FA012](https://openairdocs.org/ntsb/NYC08FA012.md): Aero Commander 560-F · Wiley Ford, WV · Accident · 4 fatal · Field investigation · Final report · Oct 14, 2007 · N6370U · Destroyed > A partial power loss in the right engine due to the failure of the number one exhaust valve, and the airplane's inability to maintain a climb on one engine for unknown reasons. Contributing to the accident were fog and rising terrain. [This report was… - [NTSB LAX07FA035](https://openairdocs.org/ntsb/LAX07FA035.md): Cessna 421B · Big Bear Lake, CA · Accident · 3 fatal · Field investigation · Final report · Nov 14, 2006 · N642BD · Destroyed > Failure of the turbine wheel shaft in the left turbocharger during the takeoff initial climb for undetermined reasons, and the pilot's failure to attain and maintain safe single engine airspeed that led to a loss of control. - [NTSB DFW06LA195](https://openairdocs.org/ntsb/DFW06LA195.md): Cessna A188B · Sumrall, MS · Accident · 1 fatal · Limited investigation · Final report · Aug 4, 2006 · N86188 · Substantial damage > The pilot's failure to maintain airspeed which resulted in an inadvertent stall. Contributing factors were the partial loss of engine power and the low altitude. - [NTSB NYC06LA179](https://openairdocs.org/ntsb/NYC06LA179.md): Cessna 172N · Pompton Lakes, NJ · Accident · 1 fatal · Limited investigation · Final report · Jul 14, 2006 · N4792D · Destroyed > Improper maintenance of the throttle shaft, which resulted in a partial loss of engine power during cruise flight, and subsequent impact with trees during a forced landing. - [NTSB NYC06LA165](https://openairdocs.org/ntsb/NYC06LA165.md): North American Navion · Sturgis, KY · Accident · 1 fatal · Limited investigation · Final report · Jul 2, 2006 · N91686 · Substantial damage > A total loss of engine power due to a leaking fuel pump gasket. - [NTSB DFW06LA078](https://openairdocs.org/ntsb/DFW06LA078.md): Cessna C-37 · Fittstown, OK · Accident · 1 fatal · Limited investigation · Final report · Mar 6, 2006 · N18045 · Destroyed > The loss of engine power due to a cracked cylinder head. A contributing factor was the lack of suitable terrain available to the pilot for the forced landing. - [NTSB LAX05FA296](https://openairdocs.org/ntsb/LAX05FA296.md): Cessna 152 · Lakewood, CA · Accident · 2 fatal · Field investigation · Final report · Sep 11, 2005 · N6565L · Destroyed > the certified flight instructor's failure to maintain an adequate airspeed resulting in a stall and loss of control. Also causal was the engine's loss of partial power due to inadequate maintenance, worn spark plugs, worn pistons, and broken piston rings. - [NTSB SEA05FA105](https://openairdocs.org/ntsb/SEA05FA105.md): Mitsubishi MU-2B-25 · Hillsboro, OR · Accident · 4 fatal · Field investigation · Final report · May 25, 2005 · N312MA · Substantial damage > The pilot's failure to obtain minimum controllable airspeed during the takeoff climb, which resulted in a loss of aircraft control when the left engine lost partial power. A fatigue failure to an oil tube, which resulted in the partial power loss to the left… - [NTSB ATL05FA048](https://openairdocs.org/ntsb/ATL05FA048.md): Cessna T210M · Shallotte, NC · Accident · 1 fatal · Field investigation · Final report · Feb 1, 2005 · C-GVVS · Destroyed > The partial loss of engine power for undetermined reasons. - [NTSB ATL05FA032](https://openairdocs.org/ntsb/ATL05FA032.md): Cessna 421B · Apison, TN · Accident · 5 fatal · Field investigation · Final report · Dec 2, 2004 · N421SD · Destroyed > The pilot's improper identification of a partial loss of engine power on initial takeoff climb resulting in a collision with trees and the ground. A factor was a partial failure of the left engine starter adapter due to overload. - [NTSB CHI04FA234](https://openairdocs.org/ntsb/CHI04FA234.md): Cessna 172E · Decorah, IA · Accident · 2 fatal · Field investigation · Final report · Aug 22, 2004 · N5410T · Destroyed > The pilot's intentional operation of the airplane with a defective magneto, his failure to abort the takeoff due to degraded aircraft performance, and his failure to obtain or maintain airspeed which resulted in a stall/spin and subsequent impact with the… - [NTSB MIA04FA076](https://openairdocs.org/ntsb/MIA04FA076.md): Cessna 177RG · Tampa, FL · Accident · 2 fatal · Field investigation · Final report · Apr 20, 2004 · N1910Q · Substantial damage > Improper maintenance by other maintenance personnel, and the reinstallation of an unserviced magneto during an engine overhaul, which resulted in the magneto malfunctioning, a loss of engine power, and the airplane being ditched into the water. - [NTSB NYC03FA164](https://openairdocs.org/ntsb/NYC03FA164.md): Hawker T Mk 7A · Pittston, PA · Accident · 1 fatal · Field investigation · Final report · Jul 22, 2003 · UNREG · Destroyed > The pilot's failure to abort the takeoff, after the engine experienced a partial power loss for undetermined reasons. Factors were the pilot's improper preflight planning by his failure to determine if the airplane was airworthy, and the operators inadequate… - [NTSB NYC03FA131](https://openairdocs.org/ntsb/NYC03FA131.md): Cessna 205 · Jeannette, PA · Accident · 4 fatal · Field investigation · Final report · Jun 15, 2003 · N124A · Substantial damage > The loss of power caused by fragments of the air filter being ingested in the engine. A factor was the pilot's delayed decision to perform a forced landing after experiencing a partial loss of engine power. - [NTSB FTW03FA118](https://openairdocs.org/ntsb/FTW03FA118.md): Bell 407 · Broadus, TX · Accident · 2 fatal · Field investigation · Final report · Mar 27, 2003 · N175PA · Destroyed > The partial loss of engine power due to erratic fuel flow metering to the engine resulting from the single point failure of the PLA potentiometer in the hydro-mechanical fuel control unit. A contributing factor was the lack of suitable terrain to execute a… - [NTSB ATL03FA009](https://openairdocs.org/ntsb/ATL03FA009.md): Beechcraft A60 · Jesup, GA · Accident · 2 fatal · Field investigation · Final report · Oct 24, 2002 · N73CR · Destroyed > The loss of power in one engine and the loss of control for undetermined reasons. - [NTSB NYC02FA178](https://openairdocs.org/ntsb/NYC02FA178.md): Beechcraft 58P · Swanzey, NH · Accident · 7 fatal · Field investigation · Final report · Sep 2, 2002 · N6688D · Destroyed > **This report was modified on 2/24/2016. Refer to the public docket for this accident for additional information.** the pilot's improper preflight planning and his decision to depart with known landing gear system mechanical deficiencies, which resulted in a… - [NTSB DEN02GA085](https://openairdocs.org/ntsb/DEN02GA085.md): Aerospatiale SA315B · Estes Park, CO · Accident · 1 fatal · Final report · Jul 31, 2002 · N3978Y · Destroyed > the pilot's abrupt collective input during water application to a forest fire. Contributing factors were encountering a vortex ring state, the inadvertent settling with power, the low altitude, and the mountainous terrain. - [NTSB CHI02LA166](https://openairdocs.org/ntsb/CHI02LA166.md): Jacobs Rutan Vari Viggen · Urbana, IL · Accident · 1 fatal · Limited investigation · Final report · Jun 16, 2002 · N915D · Destroyed > The pilot's failure to abort the takeoff. Additional factors included the partial loss of engine power due to an excessively rich mixture as a result of a bad accelerator pump housing seal, and the pilot failed to maintain control of the airplane. - [NTSB LAX02FA148](https://openairdocs.org/ntsb/LAX02FA148.md): Beech C23 · Oak Shores, CA · Accident · 3 fatal · Field investigation · Final report · Apr 28, 2002 · N9180S · Destroyed > the number 1 cylinder exhaust valve fractured and separated resulting in a loss of engine power and an off airport forced landing. A finding in the accident was the owner's failure to maintain the engine in accordance with the manufacturer's recommendations. - [NTSB NYC02FA068](https://openairdocs.org/ntsb/NYC02FA068.md): Cessna T210N · Teterboro, NJ · Accident · 1 fatal · Field investigation · Final report · Mar 9, 2002 · N2BS · Destroyed > Improper maintenance by other maintenance personnel, which resulted in the air filter element being sucked into and blocking the turbocharger inlet, and a subsequent power loss. Factors in the accident were the pilot's failure to maintain airspeed and the… - [NTSB LAX01FA199](https://openairdocs.org/ntsb/LAX01FA199.md): Piper PA-28-180 · Big Bear City, CA · Accident · 1 fatal · Field investigation · Final report · Jun 4, 2001 · N5413S · Destroyed > the student pilot's selection of a takeoff runway conducive to a tailwind weather condition and his failure to maintain airspeed and his inadvertent stall during takeoff initial climb. Factors in the accident were the partial loss engine power resulting from… - [NTSB LAX00FA310](https://openairdocs.org/ntsb/LAX00FA310.md): Piper PA-31-350 · Hilo, HI · Accident · 1 fatal · Field investigation · Final report · Aug 26, 2000 · N923BA · Substantial damage > Deterioration and failure of the oil filter converter plate gasket, which resulted in a loss of engine power and a subsequent in-flight fire. - [NTSB LAX00GA297](https://openairdocs.org/ntsb/LAX00GA297.md): Bell 412 · Cold Springs, NV · Accident · 1 fatal · Final report · Aug 13, 2000 · N174EH · Destroyed > failure of the compressor turbine disc due to cyclic fatigue brought about by repeated operation near or above the engines' temperature/power limits by company personnel over an extended period of time. Factors in the accident were: 1) the high density… - [NTSB NYC00LA141](https://openairdocs.org/ntsb/NYC00LA141.md): Carlson Criquet · East Palestine, OH · Accident · 1 fatal · Limited investigation · Final report · May 24, 2000 · N22CA · Destroyed > The failure of the powerplant to produce adequate power for undetermined reasons, and the pilot's continued operation of the airplane with known deficiencies. - [NTSB DEN00FA007](https://openairdocs.org/ntsb/DEN00FA007.md): Gardner Varieze · Quemado, NM · Accident · 1 fatal · Field investigation · Final report · Oct 18, 1999 · N13WM · Substantial damage > The pilot's selection of an unsuitable landing area on which to make a precautionary landing, and his excessive airspeed during landing touchdown. Factors were the ingestion of the foam air filter into the throat of the injector, and the pilot's failure to… - [NTSB FTW99FA262](https://openairdocs.org/ntsb/FTW99FA262.md): Beech A36TC · Franklinton, LA · Accident · 4 fatal · Field investigation · Final report · Sep 19, 1999 · N206WJ · Destroyed > The pilot's inadvertent stall while attempting to clear trees during a go-around. Factors were the pilot's misjudgment of the airplane's distance and speed during the precautionary landing and the partial loss of engine power due to a perforated piston. - [NTSB FTW99FA199](https://openairdocs.org/ntsb/FTW99FA199.md): Smith, Ted Aerostar Aerostar 601P · Bethany, OK · Accident · 2 fatal · Field investigation · Final report · Jul 23, 1999 · N345LS · Destroyed > The pilot's failure to maintain the minimum controllable airspeed. A factor was the disconnected rubber interconnect boot, which resulted in the partial loss of left engine power. - [NTSB SEA99FA113](https://openairdocs.org/ntsb/SEA99FA113.md): Alexander VAN'S RV-8 · Lafayette, OR · Accident · 1 fatal · Field investigation · Final report · Jul 10, 1999 · N41VA · Destroyed > Fatigue of the number two connecting rod end resulting in a fracture at the rod end and release from the crankshaft, an ensuing in-flight fuel fed fire, followed by the pilot's abandoning the aircraft in flight. A contributing factor was pressure on the pilot… - [NTSB CHI99FA163](https://openairdocs.org/ntsb/CHI99FA163.md): Cessna 421B · Jefferson City, MO · Accident · 4 fatal · Field investigation · Final report · May 27, 1999 · N34TM · Destroyed > the pilot failed to maintain control of the airplane. A factor was the partial loss of power due to the exhaust valve fatigue failure. - [NTSB ATL99FA011](https://openairdocs.org/ntsb/ATL99FA011.md): Piper PA-32R-300 · Roswell, GA · Accident · 1 fatal · Field investigation · Final report · Oct 28, 1998 · N8554C · Destroyed > A loss of engine power due to the failure of the number five connecting rod assembly as a result of fatigue cracks that were initiated in areas of galling. A factor was the lack of suitable terrain for a forced landing. - [NTSB MIA98FA250](https://openairdocs.org/ntsb/MIA98FA250.md): Piper Aerostar 600 · N. Myrtle Beach, SC · Accident · 5 fatal · Field investigation · Final report · Sep 20, 1998 · N17MT · Destroyed > The pilot's failure to maintain airspeed (Vs) during a single engine approach resulting in an inadvertent stall. Factors contributing to the accident were a fatigue crack in the exhaust pipe in the right engine, the aircraft weight and balance was exceeded,… - [NTSB NYC98FA179](https://openairdocs.org/ntsb/NYC98FA179.md): Smith, Ted Aerostar TS-600 · Marietta, PA · Accident · 1 fatal · Field investigation · Final report · Sep 5, 1998 · N600JB · Destroyed > The failure of the pilot to maintain airspeed during a precautionary landing which resulted in a loss of control while operating with one engine shutdown. An additional cause was the improper maintenance procedures that resulted in the #5 cylinder not being… - [NTSB MIA98FA200](https://openairdocs.org/ntsb/MIA98FA200.md): Piper PA-31-310 · Miami, FL · Accident · 1 fatal · Field investigation · Final report · Jul 17, 1998 · N7578L · Destroyed > The pilot's inadequate preflight inspection which led to fuel contamination and subsequent loss of engine power. Also causal was the pilot's failure to maintain single engine flying speed (VMC). - [NTSB FTW98FA186](https://openairdocs.org/ntsb/FTW98FA186.md): Foster/Hilsman Q2 · Siloam Springs, AR · Accident · 2 fatal · Field investigation · Final report · Apr 19, 1998 · N996DT · Destroyed > The pilot's failure to maintain aircraft control during the forced landing. Factors were the failure of the #4 cylinder head which resulted in a partial loss of engine power and the co-owners/builders' failure to perform a condition inspection of the… - [NTSB MIA98LA130](https://openairdocs.org/ntsb/MIA98LA130.md): Starck Auriga · Collegedale, TN · Accident · 1 fatal · Limited investigation · Final report · Apr 11, 1998 · N311RS · Destroyed > A leak in the electric fuel boost pump caused by an improperly sized 'O' ring installation and the pilot's failure to maintain airspeed during an approach to a forced landing resulting in a stall. - [NTSB ANC98FA019](https://openairdocs.org/ntsb/ANC98FA019.md): Cessna 207 · Homer, AK · Accident · 1 fatal · Field investigation · Final report · Feb 6, 1998 · N91029 · Destroyed > A fatigue failure, and partial separation of the number 6 engine cylinder head assembly, the operator's inadequate progressive inspection performed by company maintenance personnel, and the pilot's inadvertent stall during a maneuvering turn toward an… - [NTSB LAX98FA068](https://openairdocs.org/ntsb/LAX98FA068.md): Cessna 182P · Salinas, CA · Accident · 1 fatal · Field investigation · Final report · Jan 10, 1998 · N8158M · Destroyed > A loss of engine power due to a missing valve keeper. Also causal was the failure by engine maintenance personnel during engine top overhaul to install the second valve keeper in the No. 3 cylinder exhaust valve and the failure of inspection personnel to… - [NTSB CHI97LA284](https://openairdocs.org/ntsb/CHI97LA284.md): North American-Aero Classics P-51D · Monroe, MI · Accident · 2 fatal · Limited investigation · Final report · Sep 6, 1997 · N6345T · Destroyed > the pilot operating the airplane with a known coolant leak, coolant exhaustion, overheating of the engine, and subsequent failure of a connecting rod, which resulted in a partial loss of engine power; and failure of the pilot to see the powerline. The… - [NTSB ANC97FA099](https://openairdocs.org/ntsb/ANC97FA099.md): de Havilland DHC-2 · Skwentna, AK · Accident · 4 fatal · Field investigation · Final report · Jul 5, 1997 · N5164G · Substantial damage > a loss of engine power due to the fatigue failure of the no.1 exhaust push rod. Factors contributing to the accident were: insufficient information on pushrod inspection and overhaul from the manufacturer, unsuitable terrain available for landing, and the… - [NTSB CHI97FA093](https://openairdocs.org/ntsb/CHI97FA093.md): Stinson 108 · Greenfield, IN · Accident · 1 fatal · Field investigation · Final report · Mar 27, 1997 · N97120 · Destroyed > a loss of engine power due to restricted movement in the exhaust valve and rotted/weathered ignition harness, and the pilot's failure to maintain airspeed which resulted in an inadvertant stall. - [NTSB ANC96FA162](https://openairdocs.org/ntsb/ANC96FA162.md): Cessna 206G · Anchorage, AK · Accident · 3 fatal · Field investigation · Final report · Sep 24, 1996 · N7312C · Destroyed > improper installation of a connecting bolt in the throttle linkage, which resulted in a worn/disconnected throttle arm, partial loss of engine power, and a forced landing after takeoff. - [NTSB CHI96FA348](https://openairdocs.org/ntsb/CHI96FA348.md): Cessna 172F · Saint Clair, MN · Accident · 1 fatal · Field investigation · Final report · Sep 22, 1996 · N5373R · Destroyed > a loss of power due to the engine's #2 cylinder exhaust valve stuck open, and the pilot's failure to maintain airspeed. - [NTSB ATL96FA095](https://openairdocs.org/ntsb/ATL96FA095.md): Piper PA-23-250 · Clanton, AL · Accident · 5 fatal · Field investigation · Final report · Jun 24, 1996 · N6937Y · Destroyed > corrosion pitting of the number six cylinder on the left engine, and subsequent fatigue fracture and separation of the cylinder, which led to an engine compartment fire, wing fire, and an in-flight separation of the left wing. - [NTSB MIA96GA138](https://openairdocs.org/ntsb/MIA96GA138.md): Wsk Pzl Mielec M18A · Kinston, NC · Accident · 1 fatal · Final report · May 11, 1996 · N2065K · Destroyed > a cracked/fractured #5 cylinder and subsequent failure/jamming of the #5 exhaust valve, which resulted in a partial loss of engine power; and failure of the pilot to maintain adequate airspeed, which resulted in a stall and collision with the terrain. Factors… - [NTSB CHI96FA146](https://openairdocs.org/ntsb/CHI96FA146.md): Cessna 421 · Bernard, IA · Accident · 3 fatal · Field investigation · Final report · Apr 29, 1996 · N341DA · Destroyed > the pilot's operation of the airplane with known deficiencies, subsequent loss of oil from the left engine, and the pilot's failure to maintain minimum controllable airspeed (VMC), while diverting to an alternate airport. Factors relating to the accident… - [NTSB ANC96FA059](https://openairdocs.org/ntsb/ANC96FA059.md): Cessna 150 · Palmer, AK · Accident · 1 fatal · Field investigation · Final report · Apr 28, 1996 · N8115U · Destroyed > loss of engine power due to a malfunction of the airplane's magneto ignition system, and the pilot's failure to have an annual inspection performed. Factors relating to the accident were: the pilot's lack of recent experience and inadequate in-flight planning… - [NTSB LAX96LA152](https://openairdocs.org/ntsb/LAX96LA152.md): Powell Glasair · Groveland, CA · Accident · 1 fatal · Limited investigation · Final report · Apr 2, 1996 · N59LP · Destroyed > the pilot's decision to fly the aircraft with a known mechanical discrepancy in the throttle linkage, which resulted in a partial loss of engine power; and his failure to maintain an adequate airspeed while maneuvering for an emergency landing, which resulted… - [NTSB LAX96LA085](https://openairdocs.org/ntsb/LAX96LA085.md): Klingberg Miniplane DSA-1 · El Cajon, CA · Accident · 1 fatal · Limited investigation · Final report · Jan 7, 1996 · N66TD · Destroyed > the pilot's intentional operation of the aircraft with known mechanical deficiencies in the engine, and his failure to maintain an adequate airspeed while maneuvering for a forced landing, which resulted in an inadvertent stall/spin. - [NTSB ATL96FA021](https://openairdocs.org/ntsb/ATL96FA021.md): Mooney M20J · Bay Minette, AL · Accident · 2 fatal · Field investigation · Final report · Dec 14, 1995 · N3874H · Destroyed > failure of the alternate air door, which resulted in blockage of air through the induction system. A factor relating to the accident was: failure to comply with Safety Bulletin SB-M20-253. Next page: https://openairdocs.org/ntsb.md?fatal=1&occurrence=352&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."highestInjuryLevel" = 'Fatal' AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 352) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?fatal=1&occurrence=352 --- 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.