# Final 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 1 of 22 · 1,099 cases

## Latest cases

- [NTSB ERA26LA348](https://openairdocs.org/ntsb/ERA26LA348.md): Hopwood Joseph R Zodiac · Stockton, AL · Accident · No injuries · Class 4 · Limited · Final report · Sep 20, 2026 · N601LL · Substantial damage
  > A partial loss of engine power due to a missing exhaust clamp bolt and subsequent oil loss due to a damaged engine oil return line, which resulted in the pilot’s decision to perform an off-airport landing.
- [NTSB WPR26LA056](https://openairdocs.org/ntsb/WPR26LA056.md): Rotorway Exec · Lake Havasu City, AZ · Accident · No injuries · Class 4 · Limited · Final report · Dec 8, 2025 · C-GBZD · Substantial damage
  > The pilot’s improper securing hardware installation, which resulted in a loss of throttle control and a loss of engine power.
- [NTSB ERA26LA014](https://openairdocs.org/ntsb/ERA26LA014.md): Cessna 172 · North Lauderdale, FL · Accident · No injuries · Class 4 · Limited · Final report · Oct 13, 2025 · N1206U · Substantial damage
  > A total loss of engine power due to a fuel delivery system leak, which allowed air to enter the fuel system. The source of the leak could not be determined based on the available evidence.
- [NTSB ERA25LA238](https://openairdocs.org/ntsb/ERA25LA238.md): Cessna 310 · Fayetteville, TN · Accident · No injuries · Class 3 · Limited · Final report · Jun 24, 2025 · N5045Q · Substantial damage
  > The pilot’s decision to operate the airplane with known discrepancies.
- [NTSB CEN25LA168](https://openairdocs.org/ntsb/CEN25LA168.md): Cessna 172N · Longmont, CO · Accident · No injuries · Class 3 · Limited · Final report · May 4, 2025 · N75775 · Substantial damage
  > The disconnected throttle control that resulted in a loss of engine power due to improper maintenance.
- [NTSB ERA25LA188](https://openairdocs.org/ntsb/ERA25LA188.md): Cessna 172RG · Louisburg, NC · Accident · No injuries · Class 3 · Limited · Final report · Apr 23, 2025 · N6386V · Substantial damage
  > Maintenance personnel’s failure to identify and remediate water contamination of the airplane’s fuel system, which resulted in a partial loss of engine power during initial climb.
- [NTSB CEN25LA107](https://openairdocs.org/ntsb/CEN25LA107.md): Schweizer 269C-1 · Alvord, TX · Accident · No injuries · Class 3 · Limited · Final report · Feb 28, 2025 · N2027T · Substantial damage
  > A total loss of engine power for a reason that could not be determined.
- [NTSB ERA25LA122](https://openairdocs.org/ntsb/ERA25LA122.md): Allyn Kaste Rans S-19 (KIT) · Doylestown, PA · Accident · No injuries · Class 4 · Limited · Final report · Feb 10, 2025 · N258DK · Substantial damage
  > The pilot’s inadequate maintenance and preflight inspection.
- [NTSB CEN25LA054](https://openairdocs.org/ntsb/CEN25LA054.md): American AA-1B · Brenham, TX · Accident · No injuries · Class 3 · Limited · Final report · Dec 1, 2024 · N6242L · Substantial damage
  > A partial loss of engine power due to an obstructed induction system from a mud dauber nest.
- [NTSB ERA25LA052](https://openairdocs.org/ntsb/ERA25LA052.md): Cessna 172S · Chattanooga, TN · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 19, 2024 · N951JA · Substantial damage
  > A partial loss of engine power due to a fouled spark plug in engine’s the No. 4 cylinder. Contributing was the flight instructor’s failure to maintain aircraft control during an attempted go-around following an unsuccessful landing approach in IMC, which…
- [NTSB CEN25LA041](https://openairdocs.org/ntsb/CEN25LA041.md): Rotorway Exec 162 F · Blaine, MN · Accident · No injuries · Class 4 · Limited · Final report · Nov 15, 2024 · N280P · Substantial damage
  > A loss of engine power that resulted in a hard landing.
- [NTSB ERA25LA041](https://openairdocs.org/ntsb/ERA25LA041.md): Anderson Kitfox 4 · New Castle, PA · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 2, 2024 · N620GA · Substantial damage
  > A partial loss of engine power due to a split fuel line that resulted in a fuel leak and reduced fuel supply to the aft carburetor.
- [NTSB CEN25LA025](https://openairdocs.org/ntsb/CEN25LA025.md): Boeing A75N1 · Denton, TX · Accident · No injuries · Class 4 · Limited · Final report · Oct 21, 2024 · N62394 · Substantial damage
  > The partial loss of engine power during the initial climb and the pilot’s failure to maintain directional control during the forced landing with a tailwind.
- [NTSB CEN25LA021](https://openairdocs.org/ntsb/CEN25LA021.md): Mooney M20K · Elizabeth, LA · Accident · No injuries · Class 3 · Limited · Final report · Oct 17, 2024 · N231MW · Substantial damage
  > The pilot’s failure to set the engine fuel mixture to the required setting, which resulted in reduced engine power during a go-around and subsequent impact with trees. Contributing to the accident, the failure of the mechanic to perform a current fuel…
- [NTSB ERA25LA011](https://openairdocs.org/ntsb/ERA25LA011.md): Saint Glasair II SFT · Forest, VA · Accident · No injuries · Class 3 · Limited · Final report · Oct 11, 2024 · N952W · Substantial damage
  > The installation of a non-failsafe coupler that resulted in the separation of the throttle cable from the throttle arm and a subsequent partial loss of engine power.
- [NTSB ERA24LA392](https://openairdocs.org/ntsb/ERA24LA392.md): Piper PA28 · LaGrange, GA · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 23, 2024 · N4298V · Substantial damage
  > Improper manufacture of a cylinder exhaust valve guide by the engine manufacturer, which resulted in a stuck exhaust valve and a partial loss of engine power during initial climb.
- [NTSB ANC24FA092](https://openairdocs.org/ntsb/ANC24FA092.md): Jon Bergstedt JP Flyer · Wasilla, AK · Accident · 1 fatal · Class 3 · Field · Final report · Sep 14, 2024 · N1202Y · Destroyed
  > The installation of an improperly sized fuel line that did not allow for adequate fuel flow to the engine, resulting in a partial loss of engine power and collision with trees.
- [NTSB ERA24LA375](https://openairdocs.org/ntsb/ERA24LA375.md): Air Tractor AT-802 · Hickory Valley, TN · Accident · No injuries · Class 3 · Limited · Final report · Sep 10, 2024 · N802JF · Substantial damage
  > A partial loss of engine power due to a leak in the fuel control unit bellows, which resulted in the fuel valve moving to minimum fuel flow.
- [NTSB CEN24LA341](https://openairdocs.org/ntsb/CEN24LA341.md): Taylorcraft BC12-D · Trojan, SD · Accident · No injuries · Class 3 · Limited · Final report · Sep 7, 2024 · N95078 · Substantial damage
  > The partial loss of engine power due to a loose magneto and subsequent impact with terrain.
- [NTSB WPR24FA291](https://openairdocs.org/ntsb/WPR24FA291.md): American Champion 8GCBC · Meeteetse, WY · Accident · 1 fatal · Class 3 · Field · Final report · Sep 1, 2024 · N23BD · Destroyed
  > The pilot’s decision to continue the flight over rising terrain at a low altitude in a high-elevation, high-density-altitude environment.
- [NTSB CEN24LA313](https://openairdocs.org/ntsb/CEN24LA313.md): Grumman G164 · Dyess, AR · Accident · No injuries · Class 3 · Limited · Final report · Aug 9, 2024 · N6569 · Substantial damage
  > The improper overhaul of the carburetor and the malfunction of left magneto which resulted in a partial loss of engine power.
- [NTSB CEN24LA301](https://openairdocs.org/ntsb/CEN24LA301.md): Tailwind W10 · West Livingston, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 3, 2024 · N129WT · Substantial damage
  > A partial loss of engine power due to carburetor ice.
- [NTSB ERA24LA333](https://openairdocs.org/ntsb/ERA24LA333.md): Cirrus Design SR20 · Egg Harbor City, NJ · Accident · No injuries · Class 3 · Limited · Final report · Jul 31, 2024 · N124RR · Substantial damage
  > A partial loss of engine power due to the fatigue failure of the alternate air valve, which separated and partially obstructed the engine’s induction system.
- [NTSB ERA24FA318](https://openairdocs.org/ntsb/ERA24FA318.md): Beech A36 · Ronkonkoma, NY · Accident · 2 fatal · Class 3 · Field · Final report · Jul 22, 2024 · N1089W · Substantial damage
  > A loss of engine power during initial climb for undetermined reasons. Contributing to the outcome was the pilot's failure to maintain control of the airplane following the loss of engine power and his decision to perform an intersection takeoff which, reduced…
- [NTSB ERA24FA301](https://openairdocs.org/ntsb/ERA24FA301.md): Cessna 402B · Aguadilla, PR · Accident · 1 fatal · Class 3 · Field · Final report · Jul 11, 2024 · N4167G · Destroyed
  > The pilot’s decision to operate the airplane with known maintenance discrepancies, which resulted in a total loss of right engine power. Contributing to the outcome was the pilot’s failure to maintain airspeed while returning to the airport with a single…
- [NTSB ERA24LA299](https://openairdocs.org/ntsb/ERA24LA299.md): Bellanca 8GCBC · Frankford, DE · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 4, 2024 · N749SK · Substantial damage
  > A partial loss of engine power resulting from cylinder detonation and a cracked spark plug, which resulted in a forced landing and impact with terrain.
- [NTSB ANC24LA057](https://openairdocs.org/ntsb/ANC24LA057.md): Dehavilland-Kenmore DHC-2 · Juneau, AK · Accident · No injuries · Class 4 · Limited · Final report · Jun 28, 2024 · N590DB · Substantial damage
  > A partial loss of engine power during initial climb due to a cracked cylinder.
- [NTSB CEN24LA236](https://openairdocs.org/ntsb/CEN24LA236.md): Cirrus Design SR22T · Boerne, TX · Accident · No injuries · Class 3 · Limited · Final report · Jun 23, 2024 · N87AQ · Substantial damage
  > Maintenance personnel’s inadequate adjustment of fuel flow, which resulted in an excessively rich mixture, a rough-running engine, and a subsequent partial loss of engine power.
- [NTSB ERA24LA271](https://openairdocs.org/ntsb/ERA24LA271.md): Cessna 172 · Hernando, FL · Accident · No injuries · Class 3 · Limited · Final report · Jun 21, 2024 · N734XT · Substantial damage
  > The improper installation of a cylinder rocker stud by maintenance personnel, which resulted in a partial loss of engine power and subsequent forced landing.
- [NTSB ANC24LA045](https://openairdocs.org/ntsb/ANC24LA045.md): Cessna 206 · King Salmon, AK · Accident · No injuries · Class 3 · Limited · Final report · Jun 7, 2024 · N756CL · Substantial damage
  > A partial loss of engine power due to detonation/preignition of the No. 1 cylinder for reasons that could not be determined.
- [NTSB WPR24LA178](https://openairdocs.org/ntsb/WPR24LA178.md): Piper PA-28-180 · Nephi, UT · Accident · Minor injuries · Class 4 · Limited · Final report · May 31, 2024 · N7838W · Substantial damage
  > The pilot’s incorrect movement of the fuel selector valve to an off or restricted position, which resulted in fuel starvation and a loss of engine power.
- [NTSB CEN24LA200](https://openairdocs.org/ntsb/CEN24LA200.md): Piper PA28 · Taylor, TX · Accident · Minor injuries · Class 3 · Limited · Final report · May 27, 2024 · N56466 · Substantial damage
  > A partial loss of engine power due to an incorrect carburetor air inlet hose, which led to a reduction in air flow to the engine.
- [NTSB WPR24LA159](https://openairdocs.org/ntsb/WPR24LA159.md): Nanchang China CJ-6A · Peoria, AZ · Accident · No injuries · Class 3 · Limited · Final report · May 21, 2024 · N4182C · Substantial damage
  > The partial loss of engine power during cruise flight due to the improper installation of the master connecting rod main bushing set screws, which backed off and allowed the main bushing to shift, resulting in scoring damage on the crankshaft that led to the…
- [NTSB WPR24LA148](https://openairdocs.org/ntsb/WPR24LA148.md): Kjelsrud Gary Kitfox · Powell, WY · Accident · No injuries · Class 3 · Limited · Final report · May 10, 2024 · N605GK · Substantial damage
  > The pilot’s adjustment of the carburetor to an incorrect setting, which resulted in partial loss of engine power during takeoff.
- [NTSB ERA24LA211](https://openairdocs.org/ntsb/ERA24LA211.md): Piper PA32 · Apopka, FL · Accident · No injuries · Class 3 · Limited · Final report · May 8, 2024 · N908DK · Substantial damage
  > A partial loss of engine power due to sticking exhaust valves. Contributing to the accident was maintenance personnel’s failure to use available engine data while troubleshooting a known engine issue and maintenance personnel’s failure to comply with…
- [NTSB ERA24LA198](https://openairdocs.org/ntsb/ERA24LA198.md): Cessna 172 · Palatka, FL · Accident · No injuries · Class 3 · Limited · Final report · Apr 29, 2024 · N99442 · Substantial damage
  > The failure of the nose oil seal to remain secure in the engine crankcase, which resulted in a loss of engine oil and partial loss of engine power.
- [NTSB ERA24LA190](https://openairdocs.org/ntsb/ERA24LA190.md): Beech B24R · Lumberton Township, NJ · Accident · Minor injuries · Class 3 · Limited · Final report · Apr 22, 2024 · N53EM · Substantial damage
  > The pilot/owner’s failure to ensure adequate maintenance of the airplane, which resulted in a partial loss of engine power during takeoff.
- [NTSB ERA24FA157](https://openairdocs.org/ntsb/ERA24FA157.md): Piper PA-44-180 · Fort Pierce North, FL · Accident · 1 fatal · Class 3 · Field · Final report · Mar 30, 2024 · N595ND · Substantial damage
  > The flight instructor’s failure to maintain control of the multiengine airplane after a partial loss of engine power on one engine during a go-around, which resulted in an aerodynamic stall. Contributing to the accident was the mechanic’s failure to check the…
- [NTSB ERA24LA152](https://openairdocs.org/ntsb/ERA24LA152.md): Cessna 172 · Opelika, AL · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 24, 2024 · N863AU · Substantial damage
  > A partial loss of engine power due to a combination of fuel/oil contamination in the fuel injector assembly.
- [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 CEN24LA137](https://openairdocs.org/ntsb/CEN24LA137.md): Enstrom Helicopter 280C · Port Lavaca, TX · Accident · No injuries · Class 3 · Limited · Final report · Mar 16, 2024 · N280WR · Substantial damage
  > The pilot’s improper manual engine mixture management which resulted in a loss of power. Contributing to the accident was the mechanic’s improper setting of the idle mixture adjustment and the pilot’s decision to take off with a known mechanical deficiency.
- [NTSB CEN24LA121](https://openairdocs.org/ntsb/CEN24LA121.md): Piper PA-28-181 · Watertown, SD · Accident · No injuries · Class 3 · Limited · Final report · Feb 25, 2024 · N38696 · Substantial damage
  > The stuck No. 2 cylinder exhaust valve, which resulted in a partial loss of engine power and a forced landing due to an undersized exhaust valve guide. Contributing to the accident were the improper manufacture of the engine cylinders, and the operation of…
- [NTSB ERA24LA105](https://openairdocs.org/ntsb/ERA24LA105.md): Cessna 150 · Parkland, FL · Accident · No injuries · Class 3 · Limited · Final report · Feb 5, 2024 · N3747J · Substantial damage
  > A catastrophic engine failure due to oil starvation to the main bearings for undetermined reasons.
- [NTSB CEN24LA056](https://openairdocs.org/ntsb/CEN24LA056.md): Vans RV6 · Fordyce, AR · Accident · Minor injuries · Class 3 · Limited · Final report · Dec 5, 2023 · N600VS · Substantial damage
  > The pilot’s failure to attain a proper touchdown point following an unidentified electrical system failure and subsequent partial loss of engine power, which resulted in a runway overrun and impact with terrain. Contributing to the accident was the pilot’s…
- [NTSB ANC24LA005](https://openairdocs.org/ntsb/ANC24LA005.md): Diamond Aircraft Ind DA 40 · Kapolei, HI · Accident · Serious injuries · Class 3 · Limited · Final report · Dec 4, 2023 · N691YW · Substantial damage
  > A partial loss of engine power due to lose baffling from the muffler, which resulted in an obstruction of the exhaust system.
- [NTSB ERA24FA001](https://openairdocs.org/ntsb/ERA24FA001.md): Cessna 177RG · Lake Placid, NY · Accident · 2 fatal · Class 3 · Field · Final report · Oct 1, 2023 · N545PZ · Substantial damage
  > A partial loss of engine power for undetermined reasons. Contributing to the accident was the pilot’s inadequate preflight weight and balance planning and his aggressive low altitude maneuvering, which resulted in an aerodynamic stall and loss of control.
- [NTSB ERA23LA372](https://openairdocs.org/ntsb/ERA23LA372.md): Cessna 182P · Prospect, TN · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 14, 2023 · N8443M · Substantial damage
  > A loss of engine power due to the fatigue failure of the No. 6 cylinder exhaust valve rocker boss.
- [NTSB ERA23LA331](https://openairdocs.org/ntsb/ERA23LA331.md): Cessna 175 · Wetumpka, AL · Accident · No injuries · Class 3 · Limited · Final report · Aug 11, 2023 · N7117M · Substantial damage
  > A total loss of engine power due to the separation of the No. 3 connecting rod from the crankshaft.
- [NTSB ANC23LA062](https://openairdocs.org/ntsb/ANC23LA062.md): Cessna 180J · Chaka Creek, AK · Accident · No injuries · Class 4 · Limited · Final report · Aug 10, 2023 · N42610 · Substantial damage
  > A partial loss of engine power as a result of carburetor ice. Contributing to the outcome was the pilot’s failure to effectively use carburetor heat in conditions conducive to the formation of carburetor ice.
- [NTSB WPR23LA314](https://openairdocs.org/ntsb/WPR23LA314.md): Reynolds Ronald B Team Acft Z-MAX · Rigby, ID · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 9, 2023 · N440ZM · Substantial damage
  > The loss of engine power during takeoff due to inadequately secured wires, which resulted in the wearing of the wires’ sheaths and the grounding of the airplane’s electrical system. Contributing to the accident was the pilot’s failure to maintain airplane…

Next page: https://openairdocs.org/ntsb-events/342/cases.md?status=final&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."completionStatus" = 'Completed'
  AND c."mKey" IN (SELECT e.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e."isDefiningEvent" AND e."tier2Number" = '342')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/342/cases?status=final

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