# 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 31 · 1,527 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 ERA26LA314](https://openairdocs.org/ntsb/ERA26LA314.md): Cessna 421 · Fulton, KY · Accident · Serious injuries · Class 4 · Limited · Final report · Aug 21, 2026 · N28RH · Substantial damage
  > The misfuelling of the airplane by the refueler. Contributing to the accident was the pilot’s failure to verify that the airplane had been properly fueled prior to departing on the accident flight.
- [NTSB WPR26LA193](https://openairdocs.org/ntsb/WPR26LA193.md): Bellanca 7ACA · Pacific City, OR · Accident · No injuries · Class 4 · Limited · Final report · May 14, 2026 · N9158L · Substantial damage
  > The pilot’s loss of directional control during a precautionary landing following a partial reduction in engine rpm.
- [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 DCA26FA019](https://openairdocs.org/ntsb/DCA26FA019.md): Air Vev AIR ZERO2 · Indiantown, FL · Accident · No injuries · Class 4 · Field · Final report · Oct 23, 2025 · N514AX · Destroyed
  > A cascading shutoff of multiple aft motors due to a sudden increase in motor loads during maneuvering, resulting in a loss of control.
- [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 ERA25LA266](https://openairdocs.org/ntsb/ERA25LA266.md): Cessna T337G · Pembroke Pines, FL · Accident · Minor injuries · Class 4 · Limited · Final report · Jul 14, 2025 · N289 · Substantial damage
  > The pilot’s inadequate preflight fuel planning, which resulted in fuel exhaustion and a subsequent total loss of engine power to one of the airplane’s two engines. Contributing to the outcome was the pilot’s loading of the airplane beyond its maximum gross…
- [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 ERA25LA235](https://openairdocs.org/ntsb/ERA25LA235.md): Cessna R182 · Milton, FL · Accident · No injuries · Class 3 · Limited · Final report · Jun 23, 2025 · N262AL · Substantial damage
  > Separation of the throttle cable sleeve during takeoff, which resulted an uncommanded engine power reduction and the pilot’s inability to control the engine throttle, and resulted in a forced landing.
- [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 DCA25LA185](https://openairdocs.org/ntsb/DCA25LA185.md): Boeing 737 · Houston, TX · Accident · Serious injuries · Class 4 · Limited · Final report · Apr 17, 2025 · N7724A · No damage
  > Serious Injury to a flight attendant sustained during an evacuation.
- [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 CEN25LA101](https://openairdocs.org/ntsb/CEN25LA101.md): Cessna 177A · Farlinville, KS · Accident · No injuries · Class 4 · Limited · Final report · Feb 20, 2025 · N30413 · Substantial damage
  > A loss of engine power that resulted from fuel contamination when it was treated with a 70% isopropyl alcohol solution (antiseptic) that contained water. Contributing to the accident were vague fuel treatment instructions provided by the operator.
- [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 DCA25LA084](https://openairdocs.org/ntsb/DCA25LA084.md): Boeing 757 · Atlanta, GA · Accident · Serious injuries · Class 4 · Limited · Final report · Jan 10, 2025 · N589NW · Minor damage
  > Substantial injury to a passenger sustained during evacuation.
- [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 CEN25FA006](https://openairdocs.org/ntsb/CEN25FA006.md): Beech C99 · Norfolk, NE · Accident · 1 fatal · Class 3 · Field · Final report · Oct 8, 2024 · N130GP · Destroyed
  > The pilot’s failure to maintain adequate airspeed following a partial loss of engine power during takeoff, which resulted in a loss of airplane control. Contributing to the accident was the fatigue failure of the compressor turbine fan disk blade.
- [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 CEN24LA350](https://openairdocs.org/ntsb/CEN24LA350.md): Cessna 172 · Englewood, CO · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 11, 2024 · N20747 · Substantial damage
  > A partial loss of engine power due to fuel-oil contamination of the fuel injection servo.
- [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 CEN24LA269](https://openairdocs.org/ntsb/CEN24LA269.md): Piper PA-36-375 · Avoca, NE · Accident · No injuries · Class 3 · Limited · Final report · Jul 16, 2024 · N2386X · Substantial damage
  > A partial loss of engine power due to the loose left magneto which resulted in erratic engine timing.
- [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 CEN24LA239](https://openairdocs.org/ntsb/CEN24LA239.md): Thrush S2R · Hebron, ND · Accident · No injuries · Class 3 · Limited · Final report · Jun 17, 2024 · N529KC · Substantial damage
  > Foreign object debris in the Negative Torque Sensing (NTS) system check valve, which impeded the flow of oil to the NTS system and the propeller governor (PG) reset piston, resulting in a total loss of engine power and an off-airport forced landing.…
- [NTSB CEN24FA228](https://openairdocs.org/ntsb/CEN24FA228.md): Cessna 421 · Steamboat Springs, CO · Accident · 2 fatal · Class 3 · Field · Final report · Jun 17, 2024 · N245T · Destroyed
  > The pilot’s failure to maintain sufficient airspeed following a loss of engine power, which resulted in an inadvertent aerodynamic stall/spin at low altitude.
- [NTSB WPR24LA198](https://openairdocs.org/ntsb/WPR24LA198.md): Warren B Cox COX Breezy · Albuquerque, NM · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 13, 2024 · N409WC · Substantial damage
  > The pilot’s exceedance of the airplane’s critical angle of attack while maneuvering for landing following a partial loss of engine power after takeoff, which resulted in an aerodynamic stall and loss of control. Contributing to the accident was maintenance…
- [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 ERA24LA239](https://openairdocs.org/ntsb/ERA24LA239.md): Cessna 150 · San Juan, PR · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 1, 2024 · N6198K · Substantial damage
  > A partial loss of engine power due to the failure of the No. 2 cylinder rocker shaft bosses from fatigue cracking.
- [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…

Next page: https://openairdocs.org/ntsb-events/342/sequence.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 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?status=final

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