# NTSB investigations, TN: 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 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 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 ERA25LA222](https://openairdocs.org/ntsb/ERA25LA222.md): Dehavilland DHC-6 Twin Otter · Tullahoma, TN · Accident · Serious injuries · Class 3 · Limited · Preliminary report · Jun 8, 2025 · N166DH · Substantial damage
  > On June 8, 2025, about 1220 central daylight time, a DeHavilland DHC-6 Twin Otter, N166DH, was involved in an accident near Tullahoma, Tennessee. The commercial pilot and five passengers were seriously injured, and 15 passengers were not injured. The flight…
- [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 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 ERA23LA372](https://openairdocs.org/ntsb/ERA23LA372.md): Cessna 182P · Prospect, TN · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 14, 2023 · N8443M · Substantial damage
  > A loss of engine power due to the fatigue failure of the No. 6 cylinder exhaust valve rocker boss.
- [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 ERA22LA186](https://openairdocs.org/ntsb/ERA22LA186.md): Henry L Berrier JR Arion Lightning LS-1 · Mountain City, TN · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 7, 2022 · N6688S · Substantial damage
  > A total loss of engine power due to intermittent operation of both the engine-driven fuel pump and the electric boost pump. Contributing was the pilot’s delay in rejecting the takeoff, after the initial loss of engine power, which resulted in a collision with…
- [NTSB ERA22LA139](https://openairdocs.org/ntsb/ERA22LA139.md): Cessna 152 · Madisonville, TN · Accident · Minor injuries · Class 3 · Limited · Final report · Feb 28, 2022 · N68218 · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [NTSB ERA21FA263](https://openairdocs.org/ntsb/ERA21FA263.md): Cirrus SR22 · Mercer, TN · Accident · 1 fatal · Class 3 · Field · Final report · Jun 21, 2021 · N333LZ · Substantial damage
  > A partial loss of engine power due to foreign object debris contamination of the left turbocharger wastegate. Contributing to the accident was the pilot’s failure to divert to the nearest airport.
- [NTSB ERA21FA232](https://openairdocs.org/ntsb/ERA21FA232.md): Gulfstream American AA-5A · Crossville, TN · Accident · 1 fatal · Class 3 · Field · Final report · May 25, 2021 · N26889 · Destroyed
  > A partial loss of engine power due to carburetor icing, which resulted in a descent and impact with terrain. Contributing to the accident was the pilot’s failure to apply carburetor heat following the initial loss of engine power.
- [NTSB ERA21LA173](https://openairdocs.org/ntsb/ERA21LA173.md): Piper PA-23-250 · Springfield, TN · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 5, 2021 · N5018Y · Substantial damage
  > The flight instructor’s failure to abort the takeoff following a loss of left engine power due to fuel starvation. Also causal was the inadequate maintenance of the left fuel cap by unknown maintenance personnel, which resulted in a blockage of the fuel…
- [NTSB ERA18TA255](https://openairdocs.org/ntsb/ERA18TA255.md): Calvin Nate H Velocity STD RG E · Kingsport, TN · Accident · Serious injuries · Final report · Sep 20, 2018 · N67WR · Substantial damage
  > The pilot's failure to use carburetor heat in conditions conducive to serious carburetor icing at glide power, which resulted in a partial loss of power and an aerodynamic stall.
- [NTSB ERA17LA019](https://openairdocs.org/ntsb/ERA17LA019.md): Cessna 182 · Toone, TN · Accident · No injuries · Limited investigation · Final report · Oct 9, 2016 · N65903 · Substantial damage
  > A stuck No. 3 cylinder exhaust valve, which resulted in failure of the cylinder's valvetrain components, breach of the cylinder's rocker box cover, and partial loss of engine power due to oil starvation.
- [NTSB ERA16LA202](https://openairdocs.org/ntsb/ERA16LA202.md): Bell 407 · Mountain City, TN · Accident · Minor injuries · Limited investigation · Final report · Jun 3, 2016 · N4999 · Substantial damage
  > An incorrect and unapproved repair of the engine compressor diffuser performed by a machinist at a repair facility, which resulted in failure of the compressor diffuser aft plate and a partial loss of engine power.
- [NTSB ERA16LA019](https://openairdocs.org/ntsb/ERA16LA019.md): Beech 23 · Humboldt, TN · Accident · No injuries · Limited investigation · Final report · Oct 18, 2015 · N2339J · Substantial damage
  > A partial loss of engine power due to low No. 2 cylinder compression and an inoperative right magneto.
- [NTSB ERA15FA353](https://openairdocs.org/ntsb/ERA15FA353.md): Aero Vodochody L39 · Oneida, TN · Accident · 1 fatal · Field investigation · Final report · Sep 12, 2015 · N139RT · Destroyed
  > The pilot's failure to maintain airplane control following a partial loss of engine power during initial climb. The reason for the partial loss of engine power could not be determined due to extensive postimpact damage.
- [NTSB ERA14LA281](https://openairdocs.org/ntsb/ERA14LA281.md): Belew Marshall D II Steen Skybolt · Chapmansboro, TN · Accident · Serious injuries · Limited investigation · Final report · Jun 8, 2014 · N863SB · Destroyed
  > The pilot's failure to maintain airspeed while performing an emergency landing, which led to the airplane exceeding its critical angle-of-attack and experiencing a subsequent aerodynamic stall. Contributing to the accident was a partial loss of engine power…
- [NTSB ERA14LA142](https://openairdocs.org/ntsb/ERA14LA142.md): Cessna 172R · Jackson, TN · Accident · No injuries · Limited investigation · Final report · Mar 5, 2014 · N9417Z · Substantial damage
  > A total loss of engine power due to maintenance personnel’s improper installation of the lower vacuum pump.
- [NTSB ERA14FA112](https://openairdocs.org/ntsb/ERA14FA112.md): Gulfstream AM Corp Comm Div 690 · Bellevue, TN · Accident · 4 fatal · Field investigation · Final report · Feb 3, 2014 · N840V · Destroyed
  > The pilot's failure to maintain airspeed with one engine inoperative, which resulted in a loss of control while on approach. Contributing to the accident were airframe ice accumulation due to conditions conducive to icing and the loss of engine power on one…
- [NTSB ERA13LA214](https://openairdocs.org/ntsb/ERA13LA214.md): Beech 35-C33A · Knoxville, TN · Accident · Serious injuries · Limited investigation · Final report · Apr 25, 2013 · N2713T · Substantial damage
  > The loss of engine power during takeoff for a reasons that could not be determined because postaccident examinations and testing revealed no anomalies that would have precluded normal operation.
- [NTSB ERA13LA024](https://openairdocs.org/ntsb/ERA13LA024.md): Cashmer Philip M Sonex · Crossville, TN · Accident · Serious injuries · Limited investigation · Final report · Oct 16, 2012 · N198PC · Substantial damage
  > The pilot’s failure to maintain control of the airplane, which resulted in a low-altitude aerodynamic stall/spin. Contributing to the accident was a loss of engine power for reasons that could not be determined during postaccident examination and the pilot’s…
- [NTSB ERA12LA318](https://openairdocs.org/ntsb/ERA12LA318.md): Temco GC-1B · Dayton, TN · Accident · Minor injuries · Limited investigation · Final report · Apr 29, 2012 · N106S · Substantial damage
  > A partial loss of engine power during low-altitude maneuvers for reasons that could not be determined because the engine examination did not reveal any mechanical malfunctions or failures that would have precluded normal operation; however the carburetor was…
- [NTSB ERA12LA226](https://openairdocs.org/ntsb/ERA12LA226.md): Michael S/Michael K Safari · Middle Valley, TN · Accident · Serious injuries · Limited investigation · Final report · Mar 13, 2012 · N105KM · Substantial damage
  > A partial loss of engine power for reasons that could not be determined due to the postaccident condition of the airframe and engine.
- [NTSB ERA11LA149](https://openairdocs.org/ntsb/ERA11LA149.md): Cessna 150H · Jonesborough, TN · Accident · No injuries · Limited investigation · Final report · Feb 17, 2011 · N7237S · Substantial damage
  > A partial loss of engine power during initial climb for undetermined reasons.
- [NTSB ERA09LA498](https://openairdocs.org/ntsb/ERA09LA498.md): Hahn R-W22 Tiger Moth Rep · Symrna, TN · Accident · Serious injuries · Limited investigation · Final report · Sep 1, 2009 · N318JT · Destroyed
  > A loss of engine power for undetermined reasons.
- [NTSB ERA09LA407](https://openairdocs.org/ntsb/ERA09LA407.md): Cessna 120 · Morristown, TN · Accident · Minor injuries · Limited investigation · Final report · Jul 16, 2009 · N7227E · Substantial damage
  > The partial loss of engine power for undetermined reasons.
- [NTSB ERA09LA239](https://openairdocs.org/ntsb/ERA09LA239.md): Diamond DA20 · Shelbyville, TN · Accident · Serious injuries · Limited investigation · Final report · Apr 11, 2009 · N964CT · Substantial damage
  > A partial loss of engine power for an undetermined reason.
- [NTSB ERA09FA083](https://openairdocs.org/ntsb/ERA09FA083.md): Mitsubishi MU-2B-60 · Millington, TN · Accident · Minor injuries · Field investigation · Final report · Dec 9, 2008 · N452MA · Substantial damage
  > The pilot’s improper configuration of the airplane following an engine shutdown, which resulted in a low-altitude, unstabilized approach. Contributing to the accident was a loss of engine power for undetermined reasons.
- [NTSB NYC08LA185](https://openairdocs.org/ntsb/NYC08LA185.md): Gulfstream American AA-5A · Lewisburg, TN · Accident · Minor injuries · Limited investigation · Final report · May 17, 2008 · N26975 · Substantial damage
  > A partial loss of engine power for an undetermined reason during the initial climb, and the pilot's failure to maintain adequate airspeed while attempting to return to the airport resulting in an aerodynamic stall.

## 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" = 'TN' 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=TN

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