# NTSB investigations, WI: 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 CEN22LA141](https://openairdocs.org/ntsb/CEN22LA141.md): Cessna 150M · Brodhead, WI · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 13, 2022 · N63246 · Substantial damage
  > A loss of engine power due to the fatigue fracture of the No. 1 cylinder’s rocker shaft bosses, which resulted in a forced landing into uneven terrain.
- [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 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 WPR18FA200](https://openairdocs.org/ntsb/WPR18FA200.md): De Havilland DH112 Venom · Sheboygan, WI · Accident · 1 fatal · Field investigation · Final report · Jul 20, 2018 · N747J · Destroyed
  > The airplane's encounter with wake turbulence from the lead airplane in the formation flight, which resulted in a compressor stall and the airplane's subsequent inability to climb.
- [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 CEN17FA197](https://openairdocs.org/ntsb/CEN17FA197.md): Aerotek Pitts S 2A · Sheboygan Falls, WI · Accident · 2 fatal · Field investigation · Final report · May 26, 2017 · N67PN · Substantial damage
  > The pilot's failure to maintain airplane control following a partial loss of engine power during a low-level aerobatic maneuver; the reason for the loss of engine power could not be determined during postaccident examination of the engine. Contributing to the…
- [NTSB GAA17LA090](https://openairdocs.org/ntsb/GAA17LA090.md): Piper PA28R · Watertown, WI · Accident · No injuries · Limited investigation · Final report · Nov 5, 2016 · N300KR · Substantial damage
  > The pilot’s failure to attain a proper glidepath on approach for landing, which resulted in impact with trees. Contributing to the accident was a partial, temporary loss of engine power for reasons that could not be determined because postaccident examination…
- [NTSB CEN17LA006](https://openairdocs.org/ntsb/CEN17LA006.md): Cessna 172K · Wilmot, WI · Accident · No injuries · Limited investigation · Final report · Oct 4, 2016 · N46377 · Substantial damage
  > A failure of the No. 1 piston pin plug due to corrosion in the cylinder barrel, which resulted in oil contamination, oil starvation to the crankshaft connecting rod bearings, and a subsequent partial loss of engine power.
- [NTSB CEN16LA302](https://openairdocs.org/ntsb/CEN16LA302.md): Sonex Waiex · Fond du Lac, WI · Accident · Serious injuries · Limited investigation · Final report · Aug 3, 2016 · N12YX · Substantial damage
  > A partial loss of engine for reasons that could not be determined during an examination of the engine.
- [NTSB CEN16FA290](https://openairdocs.org/ntsb/CEN16FA290.md): Flight Design Ctls · Fond du Lac, WI · Accident · 1 fatal · Field investigation · Final report · Jul 28, 2016 · N527TS · Substantial damage
  > Carburetor contamination following exposure to water in the fuel, which resulted in a carburetor malfunction and a partial loss of engine power. Contributing to the accident was the pilot's loss of airplane control that resulted in a stall.
- [NTSB CEN16LA273](https://openairdocs.org/ntsb/CEN16LA273.md): Brandt Sonex · Lodi, WI · Accident · No injuries · Limited investigation · Final report · Jul 19, 2016 · N393SX · Substantial damage
  > The separated rocker arm assembly for undetermined reasons, which resulted in the partial loss of engine power and led to the landing gear collapsing during the subsequent forced landing.
- [NTSB CEN16LA123](https://openairdocs.org/ntsb/CEN16LA123.md): Brockman William A Challenger II · Neshkoro, WI · Accident · Serious injuries · Limited investigation · Final report · Mar 12, 2016 · N710WB · Substantial damage
  > A total loss of engine power for reasons that could not be determined, as postaccident examination revealed no anomalies that would have precluded normal operation. Contributing to the accident was the non-certificated pilot's decision to maneuver at low…
- [NTSB CEN15LA418](https://openairdocs.org/ntsb/CEN15LA418.md): Cessna 421B · Platteville, WI · Accident · Minor injuries · Limited investigation · Final report · Sep 21, 2015 · N813CA · Substantial damage
  > The partial loss of right engine power for undetermined reasons with insufficient runway remaining for the aborted takeoff.
- [NTSB CEN15LA413](https://openairdocs.org/ntsb/CEN15LA413.md): Venus CP328 Super Emeraude · Port Wing, WI · Accident · Minor injuries · Limited investigation · Final report · Sep 5, 2015 · N328TV · Substantial damage
  > The pilot’s undershooting the landing area and the subsequent impact with a hay bale. Also causal to the accident was the operation of the airplane in conditions conducive to carburetor icing, which reduced the engine power during the landing.
- [NTSB CEN15FA249](https://openairdocs.org/ntsb/CEN15FA249.md): Monnett John T JR Sonex SA · Oshkosh, WI · Accident · 2 fatal · Field investigation · Final report · Jun 2, 2015 · N123SX · Substantial damage
  > The pilot's failure to maintain sufficient airspeed following a loss of engine power during initial takeoff climb, which resulted in the airplane's wing exceeding its critical angle-of-attack and a subsequent aerodynamic stall. The reason for the loss of…
- [NTSB CEN15LA217](https://openairdocs.org/ntsb/CEN15LA217.md): Cessna 150F · Neillsville, WI · Accident · Minor injuries · Limited investigation · Final report · May 2, 2015 · N8558G · Substantial damage
  > A partial loss of engine power for reasons that could not be determined because a postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN14LA412](https://openairdocs.org/ntsb/CEN14LA412.md): Enstrom F 28F · Tomah, WI · Accident · Serious injuries · Limited investigation · Final report · Aug 7, 2014 · N213BL · Substantial damage
  > A loss of engine power due to the malfunction of the No. 4 cylinder intake valve.
- [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 CEN13CA543](https://openairdocs.org/ntsb/CEN13CA543.md): Taylorcraft BL 65 · Chippewa Falls, WI · Accident · Serious injuries · Data collection · Final report · Sep 8, 2013 · N23683 · Substantial damage
  > The loss of engine power after takeoff due to carburetor icing.
- [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 CEN12LA530](https://openairdocs.org/ntsb/CEN12LA530.md): Williams John T-51 Mustang · Oshkosh, WI · Accident · Serious injuries · Limited investigation · Final report · Aug 7, 2012 · N151TA · Substantial damage
  > The separation of an engine cooling hose from the radiator.
- [NTSB CEN11LA429](https://openairdocs.org/ntsb/CEN11LA429.md): Keesler W8 Tailwind · Oshkosh, WI · Accident · Minor injuries · Limited investigation · Final report · Jun 29, 2011 · N56PK · Substantial damage
  > The loss of engine power during initial climb for undetermined reasons.
- [NTSB CEN10CA525](https://openairdocs.org/ntsb/CEN10CA525.md): Weber Acro Sport II · Plum City, WI · Accident · Minor injuries · Data collection · Final report · Sep 5, 2010 · N819WW · Substantial damage
  > The pilot’s improper fuel planning, which resulted in a loss of engine power due to fuel exhaustion.
- [NTSB CEN09LA263](https://openairdocs.org/ntsb/CEN09LA263.md): Laseure Sonerai II · Grantsburg, WI · Accident · 1 fatal · Limited investigation · Final report · Apr 22, 2009 · N232PE · Destroyed
  > The pilot's failure to maintain airspeed during initial climb which resulted in a stall/spin. Contributing to the accident was the degraded engine performance.
- [NTSB CHI08LA230](https://openairdocs.org/ntsb/CHI08LA230.md): Cessna 172RG · Tomahawk, WI · Accident · Minor injuries · Limited investigation · Final report · Aug 2, 2008 · N6520R · Substantial damage
  > A total loss of engine power due to a loss of all of the engine's oil as a result of the safety wire on the governor idler gear shaft's oil plug breaking, leading to the oil plug coming unscrewed. Contributing to the accident was the lack of a suitable area…
- [NTSB CHI08FA135](https://openairdocs.org/ntsb/CHI08FA135.md): Piper PA-28-140 · Stevens Point, WI · Accident · 2 fatal · Field investigation · Final report · May 12, 2008 · N1813T · Substantial damage
  > The partial loss of engine power for undetermined reasons.

## 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."eventStateOrRegion" = 'WI' AND c."eventCountry" = 'USA'
  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?state=WI

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