# NTSB investigations: Engine (reciprocating)

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 25 · 1,226 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 ERA26LA176](https://openairdocs.org/ntsb/ERA26LA176.md): Icon A5 · Levittown, PR · Accident · No injuries · Class 3 · Limited · Final report · Apr 15, 2026 · N558BA · Substantial damage
  > An oil line separation at a barbed fitting in an experimental airplane, which resulted in a total loss of engine power due to oil starvation.
- [NTSB CEN26LA144](https://openairdocs.org/ntsb/CEN26LA144.md): Mooney M20 · Northlake, TX · Accident · Serious injuries · Class 4 · Limited · Final report · Mar 18, 2026 · N1374W · Substantial damage
  > The pilot’s inadequate fuel management which resulted in a total loss of engine power due to fuel starvation.
- [NTSB WPR26LA072](https://openairdocs.org/ntsb/WPR26LA072.md): Zenith 750 · Yacolt, WA · Accident · No injuries · Class 4 · Limited · Final report · Dec 23, 2025 · N186BG · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB ERA26LA002](https://openairdocs.org/ntsb/ERA26LA002.md): Maule M-7-260 · Parkland, FL · Accident · No injuries · Class 4 · Limited · Final report · Oct 4, 2025 · N368FS · Substantial damage
  > The pilot’s failure to retract the amphibious airplane’s landing gear before conducting a forced landing on the water, which resulted in a nose over.
- [NTSB CEN25LA401](https://openairdocs.org/ntsb/CEN25LA401.md): CubCrafters CCK-2000 · Thompsonville, MI · Accident · No injuries · Class 3 · Limited · Final report · Sep 7, 2025 · N40DT · Substantial damage
  > A total loss of engine power due to a lack of ignition resulting from a fractured alternator ring terminal and the builder’s incorrect installation of the wire connecting to the alternator. Contributing to the total loss of engine power was the failure of the…
- [NTSB CEN25LA322](https://openairdocs.org/ntsb/CEN25LA322.md): Piper PA-18-150 · Joliet, IL · Accident · No injuries · Class 3 · Limited · Final report · Aug 14, 2025 · N476SM · Substantial damage
  > The failure of the No. 2 cylinder exhaust valve, which resulted in a total loss of engine power.
- [NTSB CEN25LA243](https://openairdocs.org/ntsb/CEN25LA243.md): Stinson 108 · Seguin, TX · Accident · Serious injuries · Class 4 · Limited · Final report · Jul 8, 2025 · N97577 · No damage
  > The pilot’s failure to turn off the magneto switch before repositioning the propeller by hand which resulted in an inadvertent engine start.
- [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 ERA25FA230](https://openairdocs.org/ntsb/ERA25FA230.md): Mooney M20F · Beverly, MA · Accident · 2 fatal · Class 3 · Field · Final report · Jun 19, 2025 · N9573M · Substantial damage
  > The pilot’s failure to maintain control of the airplane while maneuvering to return to the airport which resulted in an aerodynamic stall. Contributing to the accident was the improperly installed No. 2 cylinder bottom spark plug by maintenance personnel,…
- [NTSB ERA25LA215](https://openairdocs.org/ntsb/ERA25LA215.md): Piper PA32-300 · Branford, CT · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 1, 2025 · N2242Z · Substantial damage
  > Maintenance personnel's improper installation and inspection of the crankshaft gear bolt during major overhaul, which resulted in the crankshaft gear disengaging from the accessory gears which led to a total loss of engine power.
- [NTSB CEN25LA160](https://openairdocs.org/ntsb/CEN25LA160.md): Grumman G164 · Louise, TX · Accident · No injuries · Class 4 · Limited · Final report · Apr 18, 2025 · N5416 · Substantial damage
  > The reported loss of engine power for undetermined reasons.
- [NTSB ERA25LA141](https://openairdocs.org/ntsb/ERA25LA141.md): Piper PA-28-181 · Hollywood, FL · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 12, 2025 · N3055B · Substantial damage
  > A total loss of engine power was due to a fracture of the crankshaft at the No. 3 main journal, which originated from a preexisting, thermally induced crack that had gone undetected by maintenance personnel during an inspection performed as part of the…
- [NTSB ANC25LA019](https://openairdocs.org/ntsb/ANC25LA019.md): Piper PA-18-150 · Wasilla, AK · Accident · No injuries · Class 3 · Limited · Final report · Feb 21, 2025 · N2447J · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB ERA25LA123](https://openairdocs.org/ntsb/ERA25LA123.md): Cessna 172C · Argyle, NY · Accident · No injuries · Class 4 · Limited · Final report · Feb 20, 2025 · N1609Y · Substantial damage
  > The mechanic’s incorrect installation of the oil temperature gauge probe in the oil filter adapter and failure to test run the engine for oil leaks after the installation, which resulted in a total loss of oil and the pilot’s decision to perform a…
- [NTSB WPR25LA095](https://openairdocs.org/ntsb/WPR25LA095.md): Quicksilver Aeronautics L-S2S · Geyserville, CA · Accident · No injuries · Class 4 · Limited · Final report · Feb 17, 2025 · N14QK · Substantial damage
  > The pilot’s failure to secure the coolant cap during the preflight inspection, which resulted in a total loss of engine power due to overheating and a subsequent forced landing.
- [NTSB CEN25LA093](https://openairdocs.org/ntsb/CEN25LA093.md): Robinson Helicopter R22 Beta · Spearman, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Feb 7, 2025 · N7191B · Substantial damage
  > Improperly torqued intake manifold bolts that allowed unmetered air to enter the engine, resulting in an overly lean fuel-air mixture, eventual failure of the No. 3 cylinder intake valve, and a total loss of engine power.
- [NTSB CEN25LA058](https://openairdocs.org/ntsb/CEN25LA058.md): Vans RV8 · Smithville, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Dec 10, 2024 · N42CS · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB WPR25LA039](https://openairdocs.org/ntsb/WPR25LA039.md): Piper PA32-300 · Pomona, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Nov 17, 2024 · N617ET · Substantial damage
  > A total loss of engine power during final approach for reasons that could not be determined.
- [NTSB CEN25LA046](https://openairdocs.org/ntsb/CEN25LA046.md): Rotor Flight Dynamics Dominator · Gilbert, MN · Accident · Serious injuries · Class 4 · Limited · Final report · Nov 15, 2024 · UNREG · Substantial damage
  > A total loss of engine power and subsequent autorotation to a swamp, that resulted in a rollover. Contributing to the pilot’s delayed egression from the gyroplane, was the lack of a restraint system cutting device.
- [NTSB CEN25LA038](https://openairdocs.org/ntsb/CEN25LA038.md): Composite FX Mosquito XE · Waco, TX · Accident · Minor injuries · Class 4 · Limited · Final report · Nov 11, 2024 · N869DJ · Substantial damage
  > The total loss of engine power and subsequent impact with terrain during an autorotation. Contributing to the accident was the improper sealing of the liquid cooling system.
- [NTSB WPR25LA030](https://openairdocs.org/ntsb/WPR25LA030.md): Piper PA-32-300 · Prescott Valley, AZ · Accident · No injuries · Class 3 · Limited · Final report · Oct 31, 2024 · N154DC · Substantial damage
  > Separation of the No. 3 engine cylinder due to a loss of torque on the cylinder base nuts, which resulted in a loss of engine power and in-flight fire. Contributing to the accident was maintenance personnel’s failure to ensure the engine case and cylinder…
- [NTSB WPR25LA027](https://openairdocs.org/ntsb/WPR25LA027.md): Cirrus Design SR20 · St. George, UT · Accident · No injuries · Class 3 · Limited · Final report · Oct 28, 2024 · N27WF · Destroyed
  > A partial loss of power for reasons that could not be determined due to postimpact fire damage.
- [NTSB WPR25LA010](https://openairdocs.org/ntsb/WPR25LA010.md): Enstrom Helicopter 280C · Vale, OR · Accident · No injuries · Class 4 · Limited · Final report · Oct 9, 2024 · N646H · Substantial damage
  > The pilot’s failure to maintain engine and rotor rpm during takeoff, that resulted in a hard landing.
- [NTSB ERA25LA004](https://openairdocs.org/ntsb/ERA25LA004.md): Grumman Acft ENG Cor-Schweizer G-164A · Parsonsburg, MD · Accident · Serious injuries · Class 4 · Limited · Final report · Oct 7, 2024 · N8957H · Substantial damage
  > A total loss of engine power for reasons that were not determined.
- [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 ERA24LA388](https://openairdocs.org/ntsb/ERA24LA388.md): Cessna 172K · Spartanburg, SC · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 20, 2024 · N7037G · Substantial damage
  > Maintenance personnel’s failure to follow the engine manufacturer’s maintenance guidance, which resulted in the assembly of the engine with an obstructed oil passage, a subsequent lack of lubrication to the front main bearing, and a total loss of engine power.
- [NTSB CEN24LA354](https://openairdocs.org/ntsb/CEN24LA354.md): Cessna 170A · Marshall, IN · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 11, 2024 · N1249D · Substantial damage
  > The fatigue fracture of the No. 6 piston connecting rod, which resulted in a loss of engine power.
- [NTSB CEN24LA344](https://openairdocs.org/ntsb/CEN24LA344.md): Bellanca 7GCAA · Rifle, CO · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 8, 2024 · N36008 · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB CEN24LA333](https://openairdocs.org/ntsb/CEN24LA333.md): Zenith Zodiac CH601 XL · Odessa, MO · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 2, 2024 · N624RJ · Substantial damage
  > Overheating of the engine coolant for reasons that could not be determined, which resulted in a precautionary off-airport landing, during which the airplane sustained substantial damage.
- [NTSB ERA24LA361](https://openairdocs.org/ntsb/ERA24LA361.md): Cessna 172 · Lynchburg, VA · Accident · No injuries · Class 3 · Limited · Final report · Aug 29, 2024 · N734SY · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB WPR24FA287](https://openairdocs.org/ntsb/WPR24FA287.md): Pitts S1 · Santa Paula, CA · Accident · Serious injuries · Class 3 · Field · Final report · Aug 25, 2024 · N42JF · Destroyed
  > The total loss of engine power at low altitude for reasons that could not be determined.
- [NTSB CEN24LA317](https://openairdocs.org/ntsb/CEN24LA317.md): Vans RV8 · Guthrie, OK · Accident · No injuries · Class 3 · Limited · Final report · Aug 15, 2024 · N184DC · Substantial damage
  > A loss of engine power due to the separation and ingestion of an air filter retaining bracket into the engine cylinder.
- [NTSB ERA24LA355](https://openairdocs.org/ntsb/ERA24LA355.md): Yates Elden H Avipro Bearhawk · Roxbury, ME · Accident · No injuries · Class 4 · Limited · Final report · Aug 14, 2024 · N652BH · Substantial damage
  > The pilot’s unstable approach which resulted in a landing with insufficient runway remaining to stop and subsequent impact with a river embankment. Contributing was the engine coolant system anomaly.
- [NTSB CEN24LA303](https://openairdocs.org/ntsb/CEN24LA303.md): Robinson Helicopter R44 · Bryant, IA · Accident · No injuries · Class 3 · Limited · Final report · Aug 3, 2024 · N225ML · Substantial damage
  > A loss of engine power during takeoff for reasons that could not be determined, resulting in impact with terrain.
- [NTSB WPR24LA259](https://openairdocs.org/ntsb/WPR24LA259.md): Beech C23 · Elko, NV · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 28, 2024 · N2248L · Substantial damage
  > A total loss of engine power for reasons that could not be determined.
- [NTSB CEN24LA286](https://openairdocs.org/ntsb/CEN24LA286.md): Piper PA46 · Radisson, WI · Accident · No injuries · Class 3 · Limited · Final report · Jul 28, 2024 · N4646G · Substantial damage
  > The non-certificated mechanic’s failure to properly tighten and torque the fuel system pressure test port cap, which resulted in a total loss of engine power, and a subsequent forced landing.
- [NTSB WPR24LA261](https://openairdocs.org/ntsb/WPR24LA261.md): Aeronca 11AC · Winchester, CA · Accident · No injuries · Class 3 · Limited · Final report · Jul 27, 2024 · N86270 · Substantial damage
  > A total loss of engine power due to a fatigue fracture of the crankshaft.
- [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 WPR24LA248](https://openairdocs.org/ntsb/WPR24LA248.md): Cessna 150M · Ritzville, WA · Accident · No injuries · Class 3 · Limited · Final report · Jul 15, 2024 · N714PW · Substantial damage
  > Maintenance personnel’s improper installation of the No. 2 cylinder exhaust valve, which allowed the valve to drop into the cylinder and resulted in a total loss of engine power.
- [NTSB WPR24LA240](https://openairdocs.org/ntsb/WPR24LA240.md): Cessna 182B · Soldier, ID · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 13, 2024 · N2617G · Substantial damage
  > A total loss of engine power resulting from the failure of the No. 1 piston and the No. 2 piston connecting rod due to detonation.
- [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 CEN24LA249](https://openairdocs.org/ntsb/CEN24LA249.md): Rotorway 162 F · Maybee, MI · Accident · No injuries · Class 3 · Limited · Final report · Jul 4, 2024 · N426DM · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [NTSB WPR24LA229](https://openairdocs.org/ntsb/WPR24LA229.md): Cessna 172N · San Diego, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 2, 2024 · N74C · Substantial damage
  > A failure of the No. 2 cylinder due to fatigue cracking as the result of an undersized fillet radius around the edge of the cylinder head dome.
- [NTSB CEN24LA245](https://openairdocs.org/ntsb/CEN24LA245.md): Raytheon A36 · Land O' Lakes, WI · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 30, 2024 · N47RT · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [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 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 WPR24LA210](https://openairdocs.org/ntsb/WPR24LA210.md): Lancair LC42-550FG · Humboldt Bay, CA · Accident · No injuries · Class 3 · Limited · Final report · Jun 20, 2024 · N141PB · Substantial damage
  > Maintenance personnel’s incorrect installation of an engine rocker cover gasket, which resulted in oil exhaustion and subsequent loss of engine power during the initial climb.
- [NTSB WPR24FA200](https://openairdocs.org/ntsb/WPR24FA200.md): Robinson Helicopter R44 II · Bluestem, WA · Accident · 2 fatal · Class 3 · Field · Final report · Jun 19, 2024 · N323TT · Destroyed
  > The pilot’s failure to manage main rotor rpm during an autorotation, which resulted in a loss of helicopter control. Contributing to the accident was a loss of power for reasons that could not be determined.
- [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.

Next page: https://openairdocs.org/ntsb-findings/010585/cases.md?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."mKey" IN (SELECT f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '010585'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/010585/cases

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