# NTSB investigations, CA: 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 1 of 4 · 167 cases

## Latest cases

- [NTSB WPR26LA073](https://openairdocs.org/ntsb/WPR26LA073.md): Evektor - Aerotechnik A S Sportstar MAX · Needles, CA · Accident · No injuries · Class 3 · Limited · Preliminary report · Dec 27, 2025 · N2312T · Substantial damage
  > On December 27, 2025, about 1109 Pacific standard time, an Evektor-Aerotechnik AS Sportstar Max LSA airplane, N2312T, was substantially damaged when it was involved in an accident near Needles, California. The pilot and pilot rated passenger were not injured.…
- [NTSB WPR26LA060](https://openairdocs.org/ntsb/WPR26LA060.md): Beechcraft G36 · Tracy, CA · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Dec 15, 2025 · N360FV · Substantial damage
  > On December 15, 2025, about 1526 Pacific standard time, a Beechcraft G36, N360FV, was substantially damaged when it was involved in an accident near Tracy, California. The pilot sustained minor injuries. The airplane was operated as a Title 14 Code of Federal…
- [NTSB WPR25LA261](https://openairdocs.org/ntsb/WPR25LA261.md): Piper PA-28-181 · San Diego, CA · Accident · No injuries · Class 3 · Limited · Preliminary report · Aug 17, 2025 · N8150J · Substantial damage
  > On August 16, 2025, about 1737 Pacific daylight time, a Piper PA-28-181, N8150J, was substantially damaged when it was involved in an accident near San Diego, California. The pilot and passenger were not injured. The airplane was operated as a Title 14 Code…
- [NTSB WPR25LA159](https://openairdocs.org/ntsb/WPR25LA159.md): North American T-28B · Olivehurst, CA · Accident · Serious injuries · Class 3 · Limited · Preliminary report · May 17, 2025 · N28DE · Substantial damage
  > On May 17, 2025, at 1022 Pacific daylight time, a North American T-28B, N28DE, was substantially damaged when it was involved in an accident near Marysville, California. The pilot and passenger were seriously injured. The airplane was operated as a Title 14…
- [NTSB WPR25LA001](https://openairdocs.org/ntsb/WPR25LA001.md): Cirrus Design SR22 · Bakersfield, CA · Accident · Serious injuries · Class 3 · Limited · Preliminary report · Oct 2, 2024 · N752B · Substantial damage
  > On October 2, 2024, about 1347 Pacific daylight time, a Cirrus SR22, N752B, was substantially damaged when it was involved in an accident near Bakersfield, California. The pilot was seriously injured. The airplane was operated as a Title 14 Code of Federal…
- [NTSB WPR24FA295](https://openairdocs.org/ntsb/WPR24FA295.md): Piper PA-24-250 · Hawthorne, CA · Accident · Serious injuries · Class 3 · Field · Preliminary report · Sep 6, 2024 · N588CP · Destroyed
  > On September 6, 2024, at 0036 Pacific daylight time, a Piper PA-24-250, N588CP, was destroyed when it was involved in an accident near Hawthorne, California. The pilot and pilot rated passenger sustained serious injuries. The airplane was operated as a Title…
- [NTSB WPR24LA117](https://openairdocs.org/ntsb/WPR24LA117.md): Piper PA-28-140 · Acton, CA · Accident · No injuries · Class 3 · Limited · Final report · Mar 23, 2024 · N1695H · Substantial damage
  > The pilots inability to fully turn off the carburetor heat which resulted in a reduction of engine power and reduced climb performance. Contributing to the accident was the pilots delayed recovery from the simulated emergency landing.
- [NTSB WPR23FA299](https://openairdocs.org/ntsb/WPR23FA299.md): Czech Sport SportCruiser · Van Nuys, CA · Accident · 2 fatal · Class 3 · Field · Final report · Aug 2, 2023 · N384SC · Destroyed
  > The misalignment of the carburetor piston slides, which resulted in a partial loss of engine power, and the flight instructor’s failure to maintain control of the airplane during an emergency landing, leading to an aerodynamic stall and impact with terrain.
- [NTSB WPR23LA262](https://openairdocs.org/ntsb/WPR23LA262.md): Beech P35 · Shelter Cove, CA · Accident · Serious injuries · Class 4 · Limited · Final report · Jul 8, 2023 · N9520Y · Substantial damage
  > A partial loss of engine power for reasons that could not be determined because the airplane was not located and recovered.
- [NTSB WPR23FA073](https://openairdocs.org/ntsb/WPR23FA073.md): Cessna 150A · Santa Monica, CA · Accident · 1 fatal · Class 3 · Field · Final report · Dec 22, 2022 · N7032X · Substantial damage
  > A failure of the No. 1 piston connecting rod bearing journal due to oil starvation for reasons that could not be determined, which resulted in a complete loss of engine power.
- [NTSB WPR22LA351](https://openairdocs.org/ntsb/WPR22LA351.md): Cessna 172L · Ventura, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 16, 2022 · N7917G · Substantial damage
  > A partial loss of engine power due to the fatigue fracture of the No. 4 exhaust valve.
- [NTSB WPR22LA316](https://openairdocs.org/ntsb/WPR22LA316.md): Cessna 150H · Vacaville, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 24, 2022 · N22507 · Substantial damage
  > The partial loss of engine power due to a stuck exhaust valve.
- [NTSB WPR22LA219](https://openairdocs.org/ntsb/WPR22LA219.md): Cessna TR182 · Davis, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 16, 2022 · N756EG · Destroyed
  > An in-flight fire during the initial takeoff climb for reasons that could not be determined based on the available evidence.
- [NTSB WPR22LA090](https://openairdocs.org/ntsb/WPR22LA090.md): Textron TTX Inc. T240 · Ravendale, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Jan 28, 2022 · N420WT · Substantial damage
  > The inadequate maintenance and inspection of the engine induction system, which resulted in the separation of the right induction tube from the turbocharger compressor outlet and the subsequent loss of engine power during departure.
- [NTSB WPR22LA062](https://openairdocs.org/ntsb/WPR22LA062.md): Beech K35 · Temecula, CA · Accident · No injuries · Class 3 · Limited · Final report · Dec 11, 2021 · N654HR · Substantial damage
  > The total loss of engine power for reasons that could not be determined from the available evidence.
- [NTSB WPR22FA022](https://openairdocs.org/ntsb/WPR22FA022.md): Cessna 172 · Ukiah, CA · Accident · 1 fatal · Class 3 · Field · Final report · Oct 28, 2021 · N1870V · Substantial damage
  > A power interruption due to water-contaminated fuel, which resulted in the student pilot aborting the takeoff and landing hard. Contributing to the accident were a leak in the left fuel tank that allowed water to enter and damage to the fuel tank that…
- [NTSB WPR21LA326](https://openairdocs.org/ntsb/WPR21LA326.md): Piper PA-32-300 · Del Mar, CA · Accident · No injuries · Class 3 · Limited · Final report · Aug 24, 2021 · N2843T · Substantial damage
  > The partial loss of engine power for reasons that could not be determined, which resulted in a forced landing on an interstate highway and subsequent collision with vehicles.
- [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 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 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 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 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 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 WPR21LA069](https://openairdocs.org/ntsb/WPR21LA069.md): Cessna 172 · San Diego, CA · Accident · No injuries · Class 3 · Limited · Final report · Dec 13, 2020 · N5098E · Substantial damage
  > A partial loss of engine power due to the fatigue fracture of the No. 3 exhaust valve rocker arm stud.
- [NTSB WPR21LA071](https://openairdocs.org/ntsb/WPR21LA071.md): Co Z Cozy · Compton, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 17, 2020 · N82V · Substantial damage
  > The partial loss of engine power due to an improperly installed sparkplug.
- [NTSB WPR21LA052](https://openairdocs.org/ntsb/WPR21LA052.md): Bellanca 7GCBC · Fallbrook, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 11, 2020 · N57517 · Substantial damage
  > A partial loss of engine power for reasons that could not be determined with the available evidence.
- [NTSB WPR20LA225](https://openairdocs.org/ntsb/WPR20LA225.md): Vans RV 8 · Grimes, CA · Accident · No injuries · Class 3 · Limited · Final report · Jul 17, 2020 · N508CM · Substantial damage
  > A partial loss of engine power for reasons that could not be determined because the airplane was not examined.
- [NTSB WPR20LA212](https://openairdocs.org/ntsb/WPR20LA212.md): Cessna 172 · Lake Tahoe, CA · Accident · 2 fatal · Class 3 · Limited · Final report · Jul 7, 2020 · N6328D · Destroyed
  > The partial loss of engine power due to carbon buildup in the No. 4 cylinder resulting from the pilot’s inadequate mixture-leaning procedures.
- [NTSB WPR20LA148](https://openairdocs.org/ntsb/WPR20LA148.md): American AA-1A · Blythe, CA · Accident · Serious injuries · Class 3 · Limited · Final report · May 15, 2020 · N12YT · Substantial damage
  > The excessive wear of one magneto’s wiring harness, which resulted in a loss of engine power during takeoff. Contributing to the accident was the pilot’s failure to maintain airspeed following the loss of engine power, which resulted in exceedance of the…
- [NTSB WPR20LA136](https://openairdocs.org/ntsb/WPR20LA136.md): Cessna 172 · Fresno, CA · Accident · Minor injuries · Class 3 · Limited · Final report · May 2, 2020 · N734NW · Substantial damage
  > The partial loss of engine power for reasons that could not be determined based on available evidence.
- [NTSB WPR20LA094](https://openairdocs.org/ntsb/WPR20LA094.md): Ercoupe 415 · Torrance, CA · Accident · No injuries · Class 3 · Limited · Final report · Feb 25, 2020 · N3437H · Substantial damage
  > The partial loss of power due to a malfunction of the throttle cable, which limited movement of the throttle body.
- [NTSB WPR20LA035](https://openairdocs.org/ntsb/WPR20LA035.md): Zenith Stol CH701 · Byron, CA · Accident · No injuries · Class 3 · Limited · Final report · Nov 29, 2019 · N701WJ · Substantial damage
  > The pilot/builder's improper construction of the cowling, which resulted in inadequate venting of the engine, its overheating, and a partial loss of engine power.
- [NTSB WPR20LA007](https://openairdocs.org/ntsb/WPR20LA007.md): Hiller UH 12E · Susanville, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 14, 2019 · N131HA · Substantial damage
  > A partial loss of engine power due to multiple overtemperature events and a hot start event, which resulted in thermally damaged internal components of the engine. Contributing to the accident was the lack of suitable terrain on which to perform the forced…
- [NTSB WPR19LA233](https://openairdocs.org/ntsb/WPR19LA233.md): Cessna 120 · Livermore, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 21, 2019 · N4237N · Substantial damage
  > A partial loss of engine power due to fouled spark plugs in the No. 4 cylinder. Contributing to the accident was the pilot’s exceedance of the airplane’s critical angle of attack and a subsequent loss of control during the initial climb.
- [NTSB WPR19LA176](https://openairdocs.org/ntsb/WPR19LA176.md): Cessna 172 · Fullerton, CA · Accident · No injuries · Class 3 · Limited · Final report · Jun 21, 2019 · N64460 · Substantial damage
  > Partial loss of engine power during takeoff due to an age-degraded carburetor heat valve seal, which detached and partially blocked the carburetor air inlet. Contributing to the accident was an inadequate maintenance inspection.
- [NTSB WPR19LA102](https://openairdocs.org/ntsb/WPR19LA102.md): Cessna 172 · Placerville, CA · Accident · No injuries · Class 3 · Limited · Final report · Mar 31, 2019 · N7033Q · Substantial damage
  > The partial loss of engine power due to an improperly maintained carburetor.
- [NTSB WPR19FA096](https://openairdocs.org/ntsb/WPR19FA096.md): Beech 50 · Riverside, CA · Accident · 1 fatal · Class 3 · Field · Final report · Mar 16, 2019 · N800DC · Substantial damage
  > The pilot’s failure to maintain airspeed and control of the airplane following a loss of right engine power for reasons that could not be determined based on the available information.
- [NTSB WPR19LA039](https://openairdocs.org/ntsb/WPR19LA039.md): Beech 36 · Los Banos, CA · Accident · No injuries · Class 3 · Limited · Final report · Dec 6, 2018 · N361TC · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on the available information.
- [NTSB WPR19LA023](https://openairdocs.org/ntsb/WPR19LA023.md): Vans RV7A · Ramona, CA · Accident · No injuries · Class 3 · Limited · Final report · Nov 10, 2018 · N5433T · Destroyed
  > The partial loss of engine power for reasons that could not be determined based on the available information.
- [NTSB WPR19LA021](https://openairdocs.org/ntsb/WPR19LA021.md): Cessna 182 · Ontario, CA · Accident · No injuries · Class 3 · Limited · Final report · Nov 8, 2018 · N9914M · Substantial damage
  > A partial loss of engine power during descent due to an incorrectly installed carburetor.
- [NTSB WPR19LA003](https://openairdocs.org/ntsb/WPR19LA003.md): Piper PA28 · Grass Valley, CA · Accident · No injuries · Class 3 · Limited · Final report · Oct 8, 2018 · N2250S · Substantial damage
  > A loss of engine power due to fuel starvation and the pilot's mismanagement of the available fuel.
- [NTSB WPR19LA002](https://openairdocs.org/ntsb/WPR19LA002.md): Robinson R44 · Salinas, CA · Accident · No injuries · Class 3 · Limited · Final report · Oct 7, 2018 · N611TH · Substantial damage
  > The partial loss of engine power after takeoff due to faulty wiring to the engine governor.
- [NTSB WPR18LA265](https://openairdocs.org/ntsb/WPR18LA265.md): Schweizer 300CBi 269C1 · Granada Hills, CA · Accident · No injuries · Class 3 · Limited · Final report · Sep 15, 2018 · N2128T · Substantial damage
  > A partial loss of engine power that was the result of a loss of compression in the No. 1 and 4 cylinders due to damage and material separation from the exhaust valve heads, which resulted in a subsequent forced, hard landing. Contributing to the accident was…
- [NTSB WPR18LA233](https://openairdocs.org/ntsb/WPR18LA233.md): Blue Oak CCK-1865 · Deadwood, CA · Accident · No injuries · Limited investigation · Final report · Aug 20, 2018 · N14CK · Substantial damage
  > A loss of engine power due to fuel exhaustion and the pilot's failure to ensure that the left-wing fuel cap was secure before flight. Contributing to the accident was the pilot's failure to monitor fuel levels while in flight.
- [NTSB WPR18FA198](https://openairdocs.org/ntsb/WPR18FA198.md): Ryan Navion · Truckee, CA · Accident · 2 fatal · Field investigation · Final report · Jul 17, 2018 · N5329K · Substantial damage
  > A loss of engine power for reasons that could not be determined.
- [NTSB WPR18LA196](https://openairdocs.org/ntsb/WPR18LA196.md): Cassutt Iiim · Rosamond, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 14, 2018 · N43SJ · Substantial damage
  > The pilot's failure to maintain adequate airspeed during a low-altitude maneuver after a partial loss of engine power, which resulted in exceedance of the airplane’s critical angle of attack and a subsequent accelerated stall. Contributing to the accident was…
- [NTSB WPR18FA150](https://openairdocs.org/ntsb/WPR18FA150.md): Morrison Marvin E JR RV 6A · Petaluma, CA · Accident · 2 fatal · Field investigation · Final report · May 27, 2018 · N4269Y · Substantial damage
  > A partial loss of engine power during initial climb after takeoff due to a loose left magneto, and the pilot's decision to turn back to the airport and his exceedance of the airplane's critical angle of attack, which resulted in an aerodynamic stall/spin and…
- [NTSB WPR18LA034](https://openairdocs.org/ntsb/WPR18LA034.md): Cessna 172P · San Jose, CA · Accident · Serious injuries · Class 2 · Limited · Final report · Nov 19, 2017 · N52492 · Substantial damage
  > The pilot's delayed decision to execute an emergency landing and his attempt to return to the airport following a partial loss of power due to wear on internal engine components, which prevented the engine from developing full-rated power during the…
- [NTSB WPR18LA039](https://openairdocs.org/ntsb/WPR18LA039.md): Cessna 172R · Redding, CA · Accident · No injuries · Class 3 · Limited · Final report · Nov 2, 2017 · N2103T · Substantial damage
  > The fatigue separation of the crankshaft due to a fatigue fracture, which resulted in a total loss of engine power and a subsequent off-airport landing and impact with a fence.
- [NTSB WPR18LA007](https://openairdocs.org/ntsb/WPR18LA007.md): Thomas Stephen Glasair Super II RG · Santa Ynez, CA · Accident · No injuries · Class 3 · Limited · Final report · Oct 5, 2017 · N248ST · Substantial damage
  > A partial loss of engine power for reasons that were not determined.

Next page: https://openairdocs.org/ntsb-events/342/sequence.md?state=CA&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."eventStateOrRegion" = 'CA' AND c."eventCountry" = 'USA'
  AND 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?state=CA

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