# NTSB investigations: Loss of engine power (partial) 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 10 of 38 · 1,858 cases ## Cases, newest first - [NTSB WPR21FA272](https://openairdocs.org/ntsb/WPR21FA272.md): Mooney M20J · Dinsmore, CA · Accident · 4 fatal · Class 3 · Field · Final report · Jul 15, 2021 · N4474H · Destroyed > The airplane’s degraded engine performance due to wear to the intake cam lobes, which diminished the airplane’s takeoff and climb performance, resulting in a subsequent collision with trees. - [NTSB ERA21LA284](https://openairdocs.org/ntsb/ERA21LA284.md): Cessna 150 · Elba, AL · Accident · No injuries · Class 3 · Limited · Final report · Jul 11, 2021 · N8172S · Substantial damage > The partial loss of engine power due to the formation of carburetor ice, which resulted in reduced climb capability and impact with trees during takeoff. - [NTSB ERA21LA283](https://openairdocs.org/ntsb/ERA21LA283.md): Bailey N Moyes Dragonfly · Charlestown, NH · Accident · 1 fatal · Class 3 · Limited · Final report · Jul 10, 2021 · N346FL · Substantial damage > The passenger’s decision to continue an unstable approach while at low altitude and in proximity to a known obstacle, which resulted in a collision with power lines. - [NTSB GAA21WA166](https://openairdocs.org/ntsb/GAA21WA166.md): Robinson R44 · Mikolajki, Poland · Accident · Serious injuries · Class 5 · Foreign · Jul 6, 2021 · SP-CCC - [NTSB ERA21LA287](https://openairdocs.org/ntsb/ERA21LA287.md): Piper PA46-500TP · Manteo, NC · Accident · No injuries · Class 3 · Limited · Final report · Jul 6, 2021 · N31062 · Substantial damage > The improperly secured pneumatic compressor discharge air (P3) line coupling nut on the engine, which ultimately allowed the nut to back off resulting in a partial loss of engine power. - [NTSB DCA21FA174](https://openairdocs.org/ntsb/DCA21FA174.md): Boeing 737-275C · Honolulu, HI · Accident · Serious injuries · Class 2 · Field · Final report · Jul 2, 2021 · N810TA · Destroyed > The flight crewmembers’ misidentification of the damaged engine (after leveling off the airplane and reducing thrust) and their use of only the damaged engine for thrust during the remainder of the flight, resulting in an unintentional descent and forced… - [NTSB CEN21LA302](https://openairdocs.org/ntsb/CEN21LA302.md): Piper Aerostar 600A · Wichita, KS · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 2, 2021 · N10HK · Substantial damage > The pilot’s improper fuel planning and management, which resulted in a total loss of engine power due to fuel exhaustion. - [NTSB WPR21LA264](https://openairdocs.org/ntsb/WPR21LA264.md): Christen Industries A-1 · Twin Falls, ID · Accident · No injuries · Class 4 · Limited · Final report · Jul 1, 2021 · N9609H · Substantial damage > Partial loss of engine power during a low pass, due to carburetor icing and the pilot’s failure to use carburetor heat during the landing approach. - [NTSB CEN21LA294](https://openairdocs.org/ntsb/CEN21LA294.md): Consolidated Aeronautics Lake LA-4-200 · Mio, MI · Accident · No injuries · Class 3 · Limited · Final report · Jun 28, 2021 · N963L · Substantial damage > The pilot’s failure to abort the takeoff roll when the engine did not produce full power. - [NTSB CEN21LA293](https://openairdocs.org/ntsb/CEN21LA293.md): Piper PA-28-140 · Porter, TX · Accident · No injuries · Class 3 · Limited · Final report · Jun 25, 2021 · N4216J · Substantial damage > The pilot’s decision to continue the takeoff with degraded engine performance, which resulted in an inability to climb and a subsequent forced landing. The reason for the engine’s degraded performance could not be determined based on available information. - [NTSB CEN21LA288](https://openairdocs.org/ntsb/CEN21LA288.md): Vining SD1 Minisport · Butler, OH · Accident · No injuries · Class 3 · Limited · Final report · Jun 23, 2021 · N72DX · Substantial damage > The pilot’s failure to maintain adequate airspeed following a partial loss of engine power, which resulted in an aerodynamic stall and impact with terrain. The reason for the partial loss of engine power could not be determined based on available information. - [NTSB GAA21WA159](https://openairdocs.org/ntsb/GAA21WA159.md): Beech 36 · Neubrandenburg, Germany · Accident · No injuries · Class 5 · Foreign · Jun 22, 2021 · D-ENET · Substantial damage - [NTSB ERA21FA263](https://openairdocs.org/ntsb/ERA21FA263.md): Cirrus SR22 · Mercer, TN · Accident · 1 fatal · Class 3 · Field · Final report · Jun 21, 2021 · N333LZ · Substantial damage > A partial loss of engine power due to foreign object debris contamination of the left turbocharger wastegate. Contributing to the accident was the pilot’s failure to divert to the nearest airport. - [NTSB CEN21LA273](https://openairdocs.org/ntsb/CEN21LA273.md): Tony Dubeansky RV10 · Fort Worth, TX · Accident · No injuries · Class 3 · Limited · Final report · Jun 16, 2021 · N878TD · Substantial damage > A partial loss of engine power due to a separated electronic ignition system connector. Contributing to the accident was the location of the ignition boxes, which provided limited access to the connectors for visual inspection. - [NTSB CEN21LA271](https://openairdocs.org/ntsb/CEN21LA271.md): Cessna T210L · Buena Vista, CO · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 14, 2021 · N30286 · Substantial damage > The partial loss of engine power due to a vane failure in the engine-driven fuel pump. - [NTSB WPR21FA223](https://openairdocs.org/ntsb/WPR21FA223.md): Vans RV6 · Porterville, CA · Accident · 1 fatal · Class 3 · Field · Final report · Jun 7, 2021 · N94PJ · Destroyed > A loss of engine power for reasons that could not be determined based on available information. - [NTSB GAA21WA134](https://openairdocs.org/ntsb/GAA21WA134.md): Cessna 180 · RPSU-Porec, Croatia · Incident · No injuries · Class 5 · Foreign · Jun 3, 2021 · HA-TUB · Minor damage - [NTSB WPR21LA212](https://openairdocs.org/ntsb/WPR21LA212.md): Maule M-5-235C · Stanley, ID · Accident · No injuries · Class 3 · Limited · Final report · May 29, 2021 · N9254E · Substantial damage > The pilot’s failure to use carburetor heat in weather conditions conducive to carburetor icing, resulting in a partial loss of engine power and a forced landing during which the airplane struck an object and nosed over. - [NTSB CEN21LA247](https://openairdocs.org/ntsb/CEN21LA247.md): Piper PA-32-260 · Flint, MI · Accident · Minor injuries · Class 4 · Limited · Final report · May 29, 2021 · N3992W · Substantial damage > The pilot’s failure to adequately monitor his fuel quantity during flight which resulted in a partial loss of engine power due to fuel starvation. - [NTSB CEN21LA241](https://openairdocs.org/ntsb/CEN21LA241.md): Pipistrel Alpha Trainer · Fort Collins, CO · Accident · Serious injuries · Class 3 · Limited · Final report · May 28, 2021 · N119JP · Substantial damage > A partial loss of engine power due to the failure of the throttle control cable, which resulted in the loss of control of the dual carburetor system. The cable failure was a result of improper soldering at the throttle cable input terminal on the splitter… - [NTSB CEN21LA237](https://openairdocs.org/ntsb/CEN21LA237.md): Grumman G164 · Celina, OH · Accident · Serious injuries · Class 3 · Limited · Final report · May 27, 2021 · N8376K · Substantial damage > A loss of engine power for undetermined reasons. - [NTSB WPR21LA208](https://openairdocs.org/ntsb/WPR21LA208.md): Boeing A75N1(PT17) · Hollister, CA · Accident · Minor injuries · Class 3 · Limited · Final report · May 26, 2021 · N75016 · Substantial damage > The improper installation of a relief valve spring that was shorter than the standard spring length, which slowed the response of the propeller governor to change the pitch of the blades during climbout, resulting in a partial loss of power. - [NTSB ERA21FA232](https://openairdocs.org/ntsb/ERA21FA232.md): Gulfstream American AA-5A · Crossville, TN · Accident · 1 fatal · Class 3 · Field · Final report · May 25, 2021 · N26889 · Destroyed > A partial loss of engine power due to carburetor icing, which resulted in a descent and impact with terrain. Contributing to the accident was the pilot’s failure to apply carburetor heat following the initial loss of engine power. - [NTSB WPR21LA205](https://openairdocs.org/ntsb/WPR21LA205.md): Boeing A75N1(PT17) · Ventura, CA · Accident · No injuries · Class 4 · Limited · Final report · May 23, 2021 · N87WF · Substantial damage > The partial loss of engine power, during cruise flight, due to the formation of carburetor ice, which resulted in a forced landing to an open field where the airplane nosed over. - [NTSB ENG21WA026](https://openairdocs.org/ntsb/ENG21WA026.md): Boeing 737 · Dubai, United Arab Emirates · Incident · Class 5 · Foreign · May 13, 2021 · G-JMCL · No damage - [NTSB CEN21LA213](https://openairdocs.org/ntsb/CEN21LA213.md): Beech C23 · Merrill, WI · Accident · Minor injuries · Class 3 · Limited · Final report · May 11, 2021 · N793Y · Substantial damage > The loss of engine power due to tappet failure. - [NTSB ERA21LA213](https://openairdocs.org/ntsb/ERA21LA213.md): Piper PA-28-161 · Okeechobee, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 29, 2021 · N271SG · Substantial damage > A total loss of engine power for reasons that could not be determined based on available information. - [NTSB ERA21LA199](https://openairdocs.org/ntsb/ERA21LA199.md): Mooney M20C · Warwick, NY · Accident · Serious injuries · Class 4 · Limited · Final report · Apr 29, 2021 · N6448U · Substantial damage > A loose stand-off clamp which resulted in a throttle assembly malfunction, and the inability of the engine to produce full power during the attempted takeoff. - [NTSB ERA21LA196](https://openairdocs.org/ntsb/ERA21LA196.md): Cessna 402C · Hyannis, MA · Accident · No injuries · Class 4 · Limited · Final report · Apr 26, 2021 · N2714B · Substantial damage > The flight instructor’s failure to confirm the position of the left engine’s auxiliary fuel boost pump switch during a simulated engine out procedure, which resulted in an excess amount of fuel in the engine and subsequent partial loss of power during a… - [NTSB WPR21FA175](https://openairdocs.org/ntsb/WPR21FA175.md): Swearingen SA226-T(B) · Winslow, AZ · Accident · 2 fatal · Class 3 · Field · Final report · Apr 23, 2021 · N59EZ · Destroyed > The loss of engine power to the right engine for reasons that could not be determined. Contributing to the accident was the pilot’s failure to maintain control of the airplane. - [NTSB WPR21LA172](https://openairdocs.org/ntsb/WPR21LA172.md): Michael J Robbins Searey · Friday Harbor, WA · Accident · No injuries · Class 4 · Limited · Final report · Apr 22, 2021 · N888MJ · Substantial damage > Partial loss of engine power due to the detachment of the throttle cable from the carburetor arm, as a result of the pilot’s inadequate maintenance which resulted in an off-airport landing and impact with vegetation. - [NTSB WPR21LA171](https://openairdocs.org/ntsb/WPR21LA171.md): Consolidated Aeronautics Lake LA-4-200 · Twentynine Palms, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Apr 21, 2021 · N2989P · Substantial damage > A partial loss of engine power due to inadequate ignition from cracked spark plugs and a failed magneto. - [NTSB WPR21LA161](https://openairdocs.org/ntsb/WPR21LA161.md): Rans S12 · Colville, WA · Accident · 2 fatal · Class 3 · Limited · Final report · Apr 17, 2021 · N707PH · Substantial damage > The pilot’s exceedance of the airplane’s critical angle of attack while maneuvering to avoid powerlines, which resulted in an aerodynamic stall and a loss of control. Contributing to the accident was the partial loss of engine power due to improper… - [NTSB ERA21LA173](https://openairdocs.org/ntsb/ERA21LA173.md): Piper PA-23-250 · Springfield, TN · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 5, 2021 · N5018Y · Substantial damage > The flight instructor’s failure to abort the takeoff following a loss of left engine power due to fuel starvation. Also causal was the inadequate maintenance of the left fuel cap by unknown maintenance personnel, which resulted in a blockage of the fuel… - [NTSB WPR21LA164](https://openairdocs.org/ntsb/WPR21LA164.md): Cessna 208B · Fairbanks, AK · Accident · No injuries · Class 3 · Limited · Final report · Apr 3, 2021 · N215MC · Substantial damage > A partial loss of engine power for reasons that could not be determined based on available evidence. - [NTSB CEN21LA176](https://openairdocs.org/ntsb/CEN21LA176.md): Beech B35 · Pearland, TX · Accident · No injuries · Class 3 · Limited · Final report · Apr 3, 2021 · N5240C · Substantial damage > The partial loss of engine power due to a crack in the No. 1 cylinder for unknown reasons. - [NTSB CEN21LA175](https://openairdocs.org/ntsb/CEN21LA175.md): Piper PA-28-140 · Augusta, KS · Accident · No injuries · Class 3 · Limited · Final report · Apr 1, 2021 · N7274F · Substantial damage > Inadequate maintenance at the time the carburetor was replaced, which resulted in the improperly installed throttle cable and a partial loss of engine power. Contributing to the accident was an inadequate annual inspection that failed to detect the improper… - [NTSB WPR21LA151](https://openairdocs.org/ntsb/WPR21LA151.md): Piper PA-28-140 · Yacolt, WA · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 29, 2021 · N665FL · Substantial damage > A partial loss of power caused by carbon build up in the cylinders, which prevented the exhaust valves from seating properly. Contributing to the accident was flying in moderate icing conditions which resulted in reduced aircraft performance and vibrations. - [NTSB WPR21LA141](https://openairdocs.org/ntsb/WPR21LA141.md): Mooney M20B · Animas, NM · Accident · Serious injuries · Class 3 · Limited · Final report · Mar 24, 2021 · N74786 · Substantial damage > The pilot’s delayed use in the operation of carburetor heat which resulted in a loss of engine power due to carburetor icing. - [NTSB CEN21LA174](https://openairdocs.org/ntsb/CEN21LA174.md): Beech 95-B55 (T42A) · Colby, KS · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 10, 2021 · N568P · Substantial damage > The pilot’s failure to remove the towbar from the nose landing gear before takeoff, which resulted in a sustained adverse yaw condition, and his failure to adequately monitor the fuel system while circling the airport, which resulted in fuel starvation and… - [NTSB GAA21WA036](https://openairdocs.org/ntsb/GAA21WA036.md): M7 Aerospace SA-227 · Chihuahua, Mexico · Incident · No injuries · Class 4 · Foreign · Feb 25, 2021 · XA-VCZ · Minor damage - [NTSB ENG21WA015](https://openairdocs.org/ntsb/ENG21WA015.md): Boeing 747 · Maastricht, Netherlands, Netherlands · Incident · Class 5 · Foreign · Feb 20, 2021 · VQ-BWT · Minor damage - [NTSB CEN21LA133](https://openairdocs.org/ntsb/CEN21LA133.md): Aero Commander S2R · Alamo, TX · Accident · No injuries · Class 3 · Limited · Final report · Feb 9, 2021 · N5679X · Substantial damage > The partial loss of engine power due to water-contaminated fuel. - [NTSB WPR21LA107](https://openairdocs.org/ntsb/WPR21LA107.md): Hughes OH-6A · Horseshoe Bend, ID · Accident · Serious injuries · Class 3 · Limited · Final report · Feb 5, 2021 · N6639R · Substantial damage > A partial loss of engine power due to a leak in the fuel cell outlet valve. - [NTSB GAA21WA039](https://openairdocs.org/ntsb/GAA21WA039.md): Robinson R22 · Bandelierkop, South Africa · Accident · Class 5 · Foreign · Feb 2, 2021 · ZS-RJH · Substantial damage - [NTSB WPR21LA098](https://openairdocs.org/ntsb/WPR21LA098.md): Cessna T182T · Crescent City, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Jan 31, 2021 · N291FR · Substantial damage > The partial loss of engine power due to the failure of both magneto capacitors. - [NTSB GAA21WA010](https://openairdocs.org/ntsb/GAA21WA010.md): Cessna 150 · Serra Azul, Brazil · Accident · Minor injuries · Class 5 · Foreign · Jan 27, 2021 · PT-FIB · Substantial damage - [NTSB ERA21LA112](https://openairdocs.org/ntsb/ERA21LA112.md): Cessna U206 · Denton, NC · Accident · No injuries · Class 3 · Limited · Final report · Jan 23, 2021 · C-GWAS · Substantial damage > A partial loss of engine power for reasons that could not be determined based on available information. - [NTSB WPR21LA094](https://openairdocs.org/ntsb/WPR21LA094.md): Randy Wayne Maloney M1 · Eagle Point, OR · Accident · Minor injuries · Class 3 · Limited · Final report · Jan 21, 2021 · N322TR · Destroyed > A partial loss of engine power for reasons that could not be determined based on available evidence. - [NTSB ERA21LA103](https://openairdocs.org/ntsb/ERA21LA103.md): TL Ultralight Sro Stingsport · Hollywood, FL · Accident · No injuries · Class 3 · Limited · Final report · Jan 15, 2021 · N404N · Substantial damage > The inadequate maintenance and inspection of the fuel system, which resulted in a partial loss of engine power. Contributing was the pilot's mismanagement of the emergency approach and landing, which resulted in a runway overrun. Next page: https://openairdocs.org/ntsb-events/342/sequence.md?page=11 ## 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 s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '342' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-events/342/sequence?page=10 --- 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.