# NTSB investigations: Lycoming O&VO-360 series: 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 2 · 55 cases

## Latest cases

- [NTSB CEN26LA265](https://openairdocs.org/ntsb/CEN26LA265.md): Piper PA-28-180 · Bulverde, TX · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Jul 20, 2026 · N454MD · Substantial damage
  > On July 20, 2026, about 1340 central daylight time, a Piper PA-28-180, N454MD was substantially damaged when it was involved in an accident near Bulberde, Texas. The flight instructor and student pilot received minor injuries. The airplane was operated as a…
- [NTSB ERA26LA196](https://openairdocs.org/ntsb/ERA26LA196.md): Beech C23 · Bangor, ME · Accident · No injuries · Class 3 · Limited · Preliminary report · May 1, 2026 · N18516 · Substantial damage
  > On May 01, 2026, at 1604 eastern daylight time, a Beechcraft C23 airplane, N18516, was substantially damaged when it was involved in an accident near Bangor, Maine. The private pilot and flight instructor were uninjured. The airplane was operated as a Title…
- [NTSB ANC26LA016](https://openairdocs.org/ntsb/ANC26LA016.md): Cessna 177B · Rocky Junction, AZ · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Feb 22, 2026 · N12984 · Substantial damage
  > On February 21, 2026, 1746 Mountain standard time, a Cessna 177B airplane, N12984, was substantially damaged when it was involved in an accident near Rocky Junction, Arizona. The pilot and passenger sustain minor injuries. The airplane was operated as a Title…
- [NTSB ERA25LA346](https://openairdocs.org/ntsb/ERA25LA346.md): Piper PA-24-180 · Ashland City, TN · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Sep 5, 2025 · N5759P · Substantial damage
  > On September 5, 2025, at 1645 central daylight time, N5759P, a Piper Cherokee PA-24-180, sustained substantial damage when it was involved in an accident near Ashland City, Tennessee. The private pilot sustained minor injuries. The flight was conducted as a…
- [NTSB ANC25LA094](https://openairdocs.org/ntsb/ANC25LA094.md): Piper PA-28-180 · Chicken, AK · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Aug 24, 2025 · N7771N · Substantial damage
  > On August 24, 2025, about 0820 Alaska daylight time, a Piper PA-28-180 airplane, N7771N, was substantially damaged when it was involved in an accident near Chicken, Alaska. The pilot and one passenger sustained minor injuries; the second passenger was…
- [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 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 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 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 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 ERA23LA264](https://openairdocs.org/ntsb/ERA23LA264.md): Piper PA28 · Lancaster, TN · Accident · Minor injuries · Class 3 · Limited · Final report · May 21, 2023 · N9139J · Substantial damage
  > The fatigue failure of an exhaust valve, resulting in a partial loss of engine power.
- [NTSB ERA23LA120](https://openairdocs.org/ntsb/ERA23LA120.md): Mooney M20C · Calhoun, GA · Accident · Serious injuries · Class 3 · Limited · Final report · Jan 28, 2023 · N5587Q · Destroyed
  > A partial loss of engine power during the initial climb due to an improperly installed spark plug.
- [NTSB CEN22LA010](https://openairdocs.org/ntsb/CEN22LA010.md): Piper PA-24 · Loveland, CO · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 7, 2021 · N5585P · Substantial damage
  > The pilot’s failure to recognize the degraded engine power and abort the takeoff in a timely manner.
- [NTSB CEN22LA002](https://openairdocs.org/ntsb/CEN22LA002.md): Beech B23 · Lamesa, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 2, 2021 · N6996Q · Substantial damage
  > The loss of engine power for a reason that could not be determined.
- [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 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 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 WPR21LA020](https://openairdocs.org/ntsb/WPR21LA020.md): Piper PA-28-180 · Show Low, AZ · Accident · No injuries · Class 3 · Limited · Final report · Oct 21, 2020 · N7405W · Substantial damage
  > A partial loss of engine power due to the failure of the No. 4 cylinder exhaust valve.
- [NTSB ERA20LA277](https://openairdocs.org/ntsb/ERA20LA277.md): Piper PA28 · St. Agatha, ME · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 5, 2020 · N7213W · Substantial damage
  > The failure of the crankshaft gear alignment dowel due to fatigue crack propagation and overstress, which resulted in a partial loss of engine power.
- [NTSB CEN20LA282](https://openairdocs.org/ntsb/CEN20LA282.md): Robinson R22 · Venice, LA · Accident · No injuries · Class 3 · Limited · Final report · Jul 8, 2020 · N7186K · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on available evidence.
- [NTSB ANC19LA034](https://openairdocs.org/ntsb/ANC19LA034.md): Cessna 172RG · Ocean City, MD · Accident · No injuries · Class 3 · Limited · Final report · Jul 16, 2019 · N9715B · Substantial damage
  > A partial loss of power due to the liberation or failure of the No. 2 cylinder's exhaust valve.
- [NTSB ERA19LA109](https://openairdocs.org/ntsb/ERA19LA109.md): Piper PA28 · Louisville, KY · Accident · No injuries · Class 3 · Limited · Final report · Feb 26, 2019 · N2184X · Substantial damage
  > The failure of the magnetos due to a known deficiency, which resulted in a partial loss of engine power. Contributing to the accident was maintenance personnel’s failure to comply with the applicable service bulletin.
- [NTSB ERA19LA033](https://openairdocs.org/ntsb/ERA19LA033.md): Piper PA28 · New Market, VA · Accident · No injuries · Limited investigation · Final report · Oct 25, 2018 · N68DW · Substantial damage
  > A loss of engine power on takeoff due to restricted air flow to the engine.
- [NTSB GAA18CA503](https://openairdocs.org/ntsb/GAA18CA503.md): Champion 8GCBC · Elberta, AL · Accident · Minor injuries · Data collection · Final report · Aug 22, 2018 · N88287 · Substantial damage
  > The pilot's failure to use carburetor heat during a low-power setting approach in conditions conducive to carburetor icing, which resulted in a partial loss of engine power.
- [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 CEN18LA138](https://openairdocs.org/ntsb/CEN18LA138.md): Piper PA 24 · New Braunfels, TX · Accident · Minor injuries · Limited investigation · Final report · Apr 12, 2018 · N7386P · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on the available information.
- [NTSB ERA18LA110](https://openairdocs.org/ntsb/ERA18LA110.md): Besarick Skybolt · Punta Gorda, FL · Accident · Minor injuries · Limited investigation · Final report · Mar 17, 2018 · N27265 · Destroyed
  > A substantial oil leak, which resulted in a partial loss of engine power and failure of the No. 2 connecting rod.
- [NTSB ERA17LA037](https://openairdocs.org/ntsb/ERA17LA037.md): Aviat A 1B · Geneva, FL · Accident · No injuries · Limited investigation · Final report · Nov 2, 2016 · N54HY · Substantial damage
  > A partial loss of engine power due to debris in the No. 1 cylinder that damaged the spark plugs.
- [NTSB CEN16LA349](https://openairdocs.org/ntsb/CEN16LA349.md): Piper PA 28-180 · Cuba, NM · Accident · No injuries · Limited investigation · Final report · Sep 4, 2016 · N9241J · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on available information.
- [NTSB WPR16LA119](https://openairdocs.org/ntsb/WPR16LA119.md): Beech C23 · Waianae, HI · Accident · Minor injuries · Limited investigation · Final report · May 23, 2016 · N6697Y · Substantial damage
  > The total loss of engine power during cruise flight due to carburetor icing. Contributing to the accident was the pilot’s delay in applying carburetor heat during flight while operating in an area conducive to carburetor icing.
- [NTSB WPR15LA217](https://openairdocs.org/ntsb/WPR15LA217.md): Piper PA 28-181 · Las Vegas, NV · Accident · Serious injuries · Limited investigation · Final report · Jul 19, 2015 · N8740E · Destroyed
  > The engine's inability to produce full-rated power due to wear on internal engine components, which resulted in a loss of altitude and subsequent landing on uneven terrain. Contributing to the accident was the airplane owner's failure to maintain the engine…
- [NTSB ERA15FA049](https://openairdocs.org/ntsb/ERA15FA049.md): Mooney M20C · Lewisburg, WV · Accident · Serious injuries · Field investigation · Final report · Nov 10, 2014 · N6581U · Substantial damage
  > The pilot's failure to maintain airspeed while maneuvering, which resulted in the airplane exceeding its critical angle of attack and experiencing an aerodynamic stall. Contributing to the accident were abnormal engine operation due to improper…
- [NTSB WPR15LA008](https://openairdocs.org/ntsb/WPR15LA008.md): Piper PA 28-180 · Bend, OR · Accident · Minor injuries · Limited investigation · Final report · Oct 10, 2014 · N32150 · Substantial damage
  > A partial loss of engine power due to carburetor icing, which resulted from the pilot’s failure to apply carburetor heat after takeoff and during the climb.
- [NTSB CEN14LA443](https://openairdocs.org/ntsb/CEN14LA443.md): Piper PA 28-181 · Waukesha, WI · Accident · Minor injuries · Limited investigation · Final report · Jul 13, 2014 · N9681K · Substantial damage
  > The loss of engine power for reasons that could not be determined because no anomalies were identified during postaccident examination.
- [NTSB WPR14LA249](https://openairdocs.org/ntsb/WPR14LA249.md): Piper PA 28-180 · Quincy, CA · Accident · No injuries · Limited investigation · Final report · Jun 15, 2014 · N4931L · Substantial damage
  > The partial loss of engine power during takeoff due to the separation of the exhaust baffling, which resulted in a partial blockage of airflow to the engine. Contributing to the accident was maintenance personnel’s inadequate inspection of the exhaust system…
- [NTSB ERA14LA043](https://openairdocs.org/ntsb/ERA14LA043.md): Maule M-5-180C · Marshfield, MA · Accident · Serious injuries · Limited investigation · Final report · Nov 15, 2013 · N76RD · Destroyed
  > A partial loss of engine power for reasons that could not be determined in postaccident examinations because fire damage precluded testing of the fuel and several engine accessories.
- [NTSB WPR13LA384](https://openairdocs.org/ntsb/WPR13LA384.md): Piper PA 28 · Sacramento, CA · Accident · Serious injuries · Limited investigation · Final report · Aug 24, 2013 · N8223W · Substantial damage
  > A partial loss of engine power during initial climb for reasons that could not be determined because postaccident examination revealed no evidence of preimpact mechanical malfunction or failure that would have precluded normal operation.
- [NTSB WPR13LA366](https://openairdocs.org/ntsb/WPR13LA366.md): Piper PA-28-180 · Overgaard, AZ · Accident · No injuries · Limited investigation · Final report · Aug 10, 2013 · N9752J · Substantial damage
  > The partial loss of engine power during takeoff due to the separation of the exhaust baffling, which resulted in a partial blockage of airflow. Contributing to the accident was inadequate maintenance of the exhaust system.
- [NTSB CEN12LA661](https://openairdocs.org/ntsb/CEN12LA661.md): Lake LA4 · Kenosha, WI · Accident · No injuries · Limited investigation · Final report · Sep 27, 2012 · N1127L · Substantial damage
  > The loss of engine power for reasons that could not be determined because examination and test run of the engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN12LA524](https://openairdocs.org/ntsb/CEN12LA524.md): Cessna 177B · Carthage, TX · Accident · No injuries · Limited investigation · Final report · Aug 7, 2012 · N17201 · Substantial damage
  > The loss of engine power during a low-level aerial observation flight as the result of the wearing of the rocker arm tip due to a thin carburized case layer, which resulted in a forced landing.
- [NTSB ERA12LA425](https://openairdocs.org/ntsb/ERA12LA425.md): Piper PA-28-140 · Lakewood, NJ · Accident · No injuries · Limited investigation · Final report · Jun 29, 2012 · N449FL · Substantial damage
  > The loss of engine power during climb for reasons that could not be determined during postaccident examination of the engine and engine systems or during postaccident operational testing of the engine.
- [NTSB CEN12LA384](https://openairdocs.org/ntsb/CEN12LA384.md): Peterson-Feder-Splinter Starduster TOO · Lake Dallas, TX · Accident · Minor injuries · Limited investigation · Final report · Jun 16, 2012 · N76NP · Substantial damage
  > A partial loss of engine power on takeoff due to a stuck intake valve on the No. 2 cylinder.
- [NTSB CEN12LA103](https://openairdocs.org/ntsb/CEN12LA103.md): Beech C23 · Watertown, SD · Accident · No injuries · Limited investigation · Final report · Dec 9, 2011 · N6717K · Substantial damage
  > A total loss of engine power during initial climb for undetermined reasons.
- [NTSB ERA12LA048](https://openairdocs.org/ntsb/ERA12LA048.md): Beech C23 · Columbia, MS · Accident · No injuries · Limited investigation · Final report · Oct 23, 2011 · N89MH · Substantial damage
  > The partial loss of engine power for undetermined reasons during takeoff.
- [NTSB CEN11CA678](https://openairdocs.org/ntsb/CEN11CA678.md): Piper PA-28-180 · Buena Vista, CO · Accident · Minor injuries · Data collection · Final report · Sep 6, 2011 · N9430J · Substantial damage
  > The airplane’s diminished climb performance due to the pilot not leaning the engine mixture enough prior to takeoff in high density altitude conditions and at nearly maximum gross takeoff weight.
- [NTSB WPR10LA465](https://openairdocs.org/ntsb/WPR10LA465.md): Mooney M20C · Visalia, CA · Accident · No injuries · Limited investigation · Final report · Sep 21, 2010 · N6090Q · Substantial damage
  > A partial loss of engine power during takeoff, which resulted from the failure of the spark plug retention mechanism.
- [NTSB ERA10LA396](https://openairdocs.org/ntsb/ERA10LA396.md): Cessna 177B · Mashpee, MA · Accident · No injuries · Limited investigation · Final report · Aug 2, 2010 · N925KM · Substantial damage
  > The pilot’s delayed use of carburetor heat while flying at reduced power settings in conditions that were favorable for carburetor icing resulting in the partial loss of engine power.
- [NTSB WPR10LA376](https://openairdocs.org/ntsb/WPR10LA376.md): Cessna 177 · Rawlins, WY · Accident · No injuries · Limited investigation · Final report · Jul 31, 2010 · N35296 · Substantial damage
  > The pilot's inadequate preflight planning, failure to properly use the takeoff checklist, and failure to lean the fuel mixture, which resulted in the airplane’s inability to attain sufficient airspeed due to the rich fuel mixture.
- [NTSB ERA10LA306](https://openairdocs.org/ntsb/ERA10LA306.md): Piper PA-28-180 · Lucedale, MS · Accident · No injuries · Limited investigation · Final report · Jun 8, 2010 · N5118L · Substantial damage
  > The partial separation of the No. 3 cylinder due to improper torquing of the cylinder hold-down bolts by maintenance personnel during installation of the cylinder.
- [NTSB CEN09CA378](https://openairdocs.org/ntsb/CEN09CA378.md): Piper PA-24 · Urbana, OH · Accident · No injuries · Data collection · Final report · Jun 20, 2009 · N7660P · Substantial damage
  > A failure of the carburetor heat cable attach bracket which resulted in the inadvertent activation of carburetor heat and the subsequent loss of engine power during takeoff. Contributing to the accident was the pilot's operation of the aircraft with a known…

Next page: https://openairdocs.org/ntsb-events/342/cases.md?engine=41514&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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41514')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND 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?engine=41514

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