# NTSB investigations: Lycoming 0-540 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.

## Latest cases

- [NTSB CEN26LA242](https://openairdocs.org/ntsb/CEN26LA242.md): Piper PA-25-235 · Forest Lake, MN · Accident · No injuries · Class 3 · Limited · Preliminary report · Jul 4, 2026 · N386AB · Substantial damage
  > On July 4, 2026, about 0942 central daylight time, a Piper PA-25-235 airplane, N386AB, was substantially damaged when it was involved in an accident near Forest Lake, Minnesota. The pilot was not injured. The airplane was operated as a Title 14 Code of…
- [NTSB ANC26LA053](https://openairdocs.org/ntsb/ANC26LA053.md): Piper PA-28-235 · Key West, FL · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Jun 14, 2026 · N15564 · Substantial damage
  > On June 14, 2026, at 1035 eastern standard time, a Piper PA-28-235 airplane, N15564, was substantially damaged when it was involved in an accident near Key West, Florida. The pilot was not injured and the passenger sustained minor injuries. The airplane was…
- [NTSB CEN25LA357](https://openairdocs.org/ntsb/CEN25LA357.md): Piper PA-24-250 · Gregory, MI · Accident · Serious injuries · Class 3 · Limited · Preliminary report · Aug 28, 2025 · N7412P · Substantial damage
  > On August 28, 2025, at about 1550 eastern daylight time, a Piper PA-24-250 airplane, N7412P, was substantially damaged when it was involved in an accident near Gregory, Michigan. The pilot was seriously injured. The airplane was operated as a Title 14 Code of…
- [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 WPR23FA225](https://openairdocs.org/ntsb/WPR23FA225.md): Cessna R182 · McCall, ID · Accident · 1 fatal · Class 3 · Field · Final report · Jun 12, 2023 · N3138C · Substantial damage
  > Maintenance personnel's failure to properly torque and inspect the magneto hardware, which resulted in a partial loss of engine power.
- [NTSB GAA23WA159](https://openairdocs.org/ntsb/GAA23WA159.md): Piper PA-32-260 · Nicholls Town, Bahamas · Accident · No injuries · Class 5 · Foreign · Jun 1, 2023 · N3790W · Substantial damage
- [NTSB ERA21FA333](https://openairdocs.org/ntsb/ERA21FA333.md): Piper PA24 · Wadesboro, NC · Accident · 2 fatal · Class 3 · Field · Final report · Aug 20, 2021 · N8262P · Destroyed
  > A partial loss of engine power during takeoff for reasons that could not be determined. Contributing was the pilot’s loss of airplane control, resulting in an aerodynamic stall and impact with trees and terrain.
- [NTSB WPR21LA212](https://openairdocs.org/ntsb/WPR21LA212.md): Maule M-5-235C · Stanley, ID · Accident · No injuries · Class 3 · Limited · Final report · May 29, 2021 · N9254E · Substantial damage
  > The pilot’s failure to use carburetor heat in weather conditions conducive to carburetor icing, resulting in a partial loss of engine power and a forced landing during which the airplane struck an object and nosed over.
- [NTSB ERA21LA019](https://openairdocs.org/ntsb/ERA21LA019.md): Piper PA32 · Atlanta, GA · Accident · No injuries · Class 3 · Limited · Final report · Oct 11, 2020 · N3595W · Substantial damage
  > A partial loss of engine power during takeoff due to a right magneto anomaly, which resulted in the pilot’s decision to abort the takeoff and the subsequent runway excursion.
- [NTSB CEN20LA361](https://openairdocs.org/ntsb/CEN20LA361.md): Cessna R182 · Crowley, LA · Accident · No injuries · Class 3 · Limited · Final report · Aug 24, 2020 · N639RR · Substantial damage
  > The failure of the No. 4 cylinder exhaust valve that resulted in a partial loss of engine power. Based on available evidence, the reason for the failed valve was not determined.
- [NTSB ERA19LA273](https://openairdocs.org/ntsb/ERA19LA273.md): Robinson R44 · Sardis, GA · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 17, 2019 · N827JE · Substantial damage
  > Fatigue failure of the fasteners on the engine crankshaft, which resulted in a partial loss of engine power and a subsequent forced landing.
- [NTSB CEN19LA126](https://openairdocs.org/ntsb/CEN19LA126.md): Piper PA28 · Dwight, IL · Accident · No injuries · Class 3 · Limited · Final report · Apr 19, 2019 · N838JH · Substantial damage
  > A partial loss of engine power due to a restriction in fuel flow for undetermined reasons.
- [NTSB CEN19LA071](https://openairdocs.org/ntsb/CEN19LA071.md): Piper PA24 · Beechwood, WI · Accident · Minor injuries · Class 3 · Limited · Final report · Jan 18, 2019 · N6497P · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on the available information.
- [NTSB CEN18LA158](https://openairdocs.org/ntsb/CEN18LA158.md): Robinson Helicopter R44 · East Troy, WI · Accident · No injuries · Class 3 · Limited · Final report · May 4, 2018 · N444VH · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on the available information, which resulted in impact with terrain and dynamic rollover during the subsequent attempted landing.
- [NTSB ERA17LA257](https://openairdocs.org/ntsb/ERA17LA257.md): Robinson Helicopter R44 · Myrtle Beach, SC · Accident · No injuries · Limited investigation · Final report · Jul 24, 2017 · N828RD · Substantial damage
  > A loss of available power to the main rotor due to a fractured exhaust pushrod and housing, which allowed engine oil to coat the V-belts. Contributing to the accident was the pilot's decision to continue the tour and his failure to maintain adequate rotor rpm…
- [NTSB WPR17LA096](https://openairdocs.org/ntsb/WPR17LA096.md): Piper PA 32-260 · Mukilteo, WA · Accident · Minor injuries · Limited investigation · Final report · May 2, 2017 · N3457W · Substantial damage
  > The improper maintenance of the carburetor, which resulted in a stuck float and a partial loss of engine power during takeoff.
- [NTSB ANC17TA015](https://openairdocs.org/ntsb/ANC17TA015.md): Piper PA-32 · Pilot Point, AK · Accident · Serious injuries · Final report · Jan 17, 2017 · N4261T · Substantial damage
  > The pilot's continued flight into known icing conditions, which resulted in structural icing and a forced landing on icy, snow-covered terrain.
- [NTSB CEN16LA334](https://openairdocs.org/ntsb/CEN16LA334.md): Piper PA 25-235 · Bushton, KS · Accident · Serious injuries · Limited investigation · Final report · Aug 25, 2016 · N4963Y · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on the available information.
- [NTSB CEN15LA404](https://openairdocs.org/ntsb/CEN15LA404.md): Cessna TR182 · Midland, TX · Accident · 1 fatal · Limited investigation · Final report · Sep 5, 2015 · N4707S · Substantial damage
  > The partial loss of engine power for reasons that could not be determined based on the available evidence.
- [NTSB CEN15LA383](https://openairdocs.org/ntsb/CEN15LA383.md): Piper PA 25-235 · Harvey, ND · Accident · No injuries · Limited investigation · Final report · Aug 21, 2015 · N4652Y · Substantial damage
  > The partial loss of engine power due to a failed magneto and two cylinders with low compression. Contributing to the accident was the pilot/owner’s decision to operate the airplane with an ongoing engine issue.
- [NTSB CEN15LA284](https://openairdocs.org/ntsb/CEN15LA284.md): Cessna TR182 · Casper, WY · Accident · Serious injuries · Limited investigation · Final report · Jun 27, 2015 · N4751S · Substantial damage
  > The improper repair of the carburetor heat cable sheath to clamp joint, which prevented the proper operation of the carburetor heat and resulted in the loss of engine power.
- [NTSB CEN15LA238](https://openairdocs.org/ntsb/CEN15LA238.md): Piper PA-25-235 · Omega, OK · Accident · No injuries · Limited investigation · Final report · May 11, 2015 · N7279Z · Substantial damage
  > Improper base metal preparation or contamination of the No. 5 cylinder wall before it was coated, which resulted in the coating peeling off of the cylinder wall and contaminating the engine oil and the subsequent partial loss of engine power.
- [NTSB CEN12LA622](https://openairdocs.org/ntsb/CEN12LA622.md): Piper PA-25-235 · Jasper, MO · Accident · No injuries · Limited investigation · Final report · Sep 6, 2012 · N7655Z · Substantial damage
  > The total loss of engine power due to separation of a carburetor air box support bracket and subsequent airflow obstruction to the carburetor.
- [NTSB CEN12LA299](https://openairdocs.org/ntsb/CEN12LA299.md): Piper PA-24-250 · Shawnee, OK · Accident · No injuries · Limited investigation · Final report · May 14, 2012 · N7171P · Substantial damage
  > The improper installation of the mixture cable by maintenance personnel, which allowed the mixture cable to entangle with the landing gear during gear extension and led to the subsequent loss of engine power.
- [NTSB CEN12LA118](https://openairdocs.org/ntsb/CEN12LA118.md): Piper PA-32-260 · Elk Rapids, MI · Accident · Minor injuries · Limited investigation · Final report · Dec 31, 2011 · N997TB · Substantial damage
  > The loss of engine power due to the failure of the exhaust valve.
- [NTSB WPR11LA374](https://openairdocs.org/ntsb/WPR11LA374.md): SIAI Marchetti F.260 · Coalinga, CA · Accident · Minor injuries · Limited investigation · Final report · Aug 7, 2011 · N408FD · Substantial damage
  > A partial loss of engine power immediately after takeoff for undetermined reasons.
- [NTSB WPR11LA340](https://openairdocs.org/ntsb/WPR11LA340.md): Piper PA-24-250 · Lopez, WA · Accident · No injuries · Limited investigation · Final report · Jul 17, 2011 · N5532P · Substantial damage
  > A partial loss of engine power due to a cracked engine case near the rear cylinder.
- [NTSB WPR11LA311](https://openairdocs.org/ntsb/WPR11LA311.md): Cessna R182 · Hesperia, CA · Accident · Minor injuries · Limited investigation · Final report · Jul 6, 2011 · N7392X · Substantial damage
  > The separation of the end baffle cone inside the muffler, which blocked airflow through the engine after takeoff and resulted in a loss of engine power and an off-airport landing into obstacles.
- [NTSB CEN09LA605](https://openairdocs.org/ntsb/CEN09LA605.md): Piper PA-32-260 · Troy, MI · Accident · Minor injuries · Limited investigation · Final report · Sep 25, 2009 · N4864S · Substantial damage
  > A loss of engine power during initial climb due to fuel starvation as a result of the pilot's selection of an empty or nearly empty main tank for takeoff.
- [NTSB WPR09LA139](https://openairdocs.org/ntsb/WPR09LA139.md): Maule M-5 · Calexico, CA · Accident · No injuries · Limited investigation · Final report · Mar 3, 2009 · N9166E · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB WPR09FA038](https://openairdocs.org/ntsb/WPR09FA038.md): Piper PA-32-260 · Sedona, AZ · Accident · 3 fatal · Field investigation · Final report · Nov 13, 2008 · N3929W · Destroyed
  > The partial loss of engine power while maneuvering for undetermined reasons.
- [NTSB DFW08LA065](https://openairdocs.org/ntsb/DFW08LA065.md): Cessna TR182 · San Antonio, TX · Accident · No injuries · Limited investigation · Final report · Feb 8, 2008 · N2225T · Substantial damage
  > Separation of the turbocharger exhaust stack, which resulted in a loss of engine power.

## 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 ('41532')
    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=41532

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