# NTSB investigations, OK: 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 CEN27LA029](https://openairdocs.org/ntsb/CEN27LA029.md): Piper PA-28 · Claremore, OK · Accident · No injuries · Class 3 · Limited · Preliminary report · Oct 22, 2026 · N5393W · Substantial damage
  > On October 22, 2026, about 1510 central daylight time, a Piper PA-28-160 airplane, N5393W, was substantially damaged when it was involved in an accident near Claremore, Oklahoma. The flight instructor and student pilot were not injured. The airplane was…
- [NTSB CEN26LA248](https://openairdocs.org/ntsb/CEN26LA248.md): Piper PA-30 · Tulsa, OK · Accident · Serious injuries · Class 3 · Limited · Preliminary report · Jul 9, 2026 · N8154Y · Substantial damage
  > On July 9, 2026, about 1729 central daylight time, a Piper PA-30 airplane, N8154Y, was substantially damaged when it was involved in an accident near Tulsa, Oklahoma. The flight instructor and pilot under instruction were seriously injured. The airplane was…
- [NTSB CEN23LA152](https://openairdocs.org/ntsb/CEN23LA152.md): Vans RV6 · Goldsby, OK · Accident · Minor injuries · Class 3 · Limited · Final report · Apr 8, 2023 · N48PS · Substantial damage
  > The engine electronic ignition system became disconnected, which resulted in a partial loss of engine power.
- [NTSB CEN22LA255](https://openairdocs.org/ntsb/CEN22LA255.md): Mooney M20E · Stillwater, OK · Accident · No injuries · Class 3 · Limited · Final report · Jun 18, 2022 · N5895Q · Substantial damage
  > The inadequate maintenance and inspection of the engine induction air coupling, which impeded airflow to the engine and resulted in the subsequent partial loss of engine power.
- [NTSB CEN21LA047](https://openairdocs.org/ntsb/CEN21LA047.md): Ercoupe 415 · Ardmore, OK · Accident · Serious injuries · Class 3 · Limited · Final report · Nov 7, 2020 · N331BW · Substantial damage
  > The pilot’s improper decision to takeoff with 3 persons in a 2-place airplane and over maximum gross weight, and his failure to apply carburetor heat when the airplane’s engine experienced carburetor ice and a partial loss of power.
- [NTSB CEN20LA292](https://openairdocs.org/ntsb/CEN20LA292.md): Beech A23-24 · Burns Flat, OK · Accident · No injuries · Class 3 · Limited · Final report · Jul 19, 2020 · N3412C · Substantial damage
  > The mechanic’s improper maintenance when he reinstalled the fuel servo during the last annual inspection, which resulted in a loss of engine power during cruise flight when the throttle control rod-end disconnected from the fuel servo throttle linkage.
- [NTSB CEN19LA233](https://openairdocs.org/ntsb/CEN19LA233.md): Cessna 172 · Kingston, OK · Accident · No injuries · Class 3 · Limited · Final report · Jul 22, 2019 · N8251L · Substantial damage
  > The partial loss of engine power due to a stuck exhaust valve.
- [NTSB CEN17LA251](https://openairdocs.org/ntsb/CEN17LA251.md): Cody Hawkins JA30 Superstol · Ponca City, OK · Accident · No injuries · Limited investigation · Final report · Jul 2, 2017 · N2463H · Substantial damage
  > Contamination of the fuel system, resulting in a partial loss of engine power and subsequent off-airport landing.
- [NTSB CEN17LA242](https://openairdocs.org/ntsb/CEN17LA242.md): Bellanca 17 30 · Grove, OK · Accident · No injuries · Limited investigation · Final report · Jun 25, 2017 · N14728 · Substantial damage
  > An unporting of fuel in the right wing while maneuvering in the airport traffic pattern, which resulted in a partial loss of engine power due to fuel starvation.
- [NTSB CEN16LA082](https://openairdocs.org/ntsb/CEN16LA082.md): Beech V35B · Tahlequah, OK · Accident · No injuries · Limited investigation · Final report · Dec 23, 2015 · N4523A · Substantial damage
  > A partial loss of engine power shortly after takeoff due to an inadequately tightened fuel line. Also causal was the pilot's failure to extend the landing gear once the airplane was in a position to safely land on the runway.
- [NTSB CEN15LA258](https://openairdocs.org/ntsb/CEN15LA258.md): Flight Design Ctsw · Haskell, OK · Accident · Minor injuries · Limited investigation · Final report · Jun 6, 2015 · N535CT · Substantial damage
  > The loss of engine power for reasons that could not be determined because a postaccident engine examination and test run did not reveal any evidence of preimpact malfunctions or failures that would have precluded normal operation.
- [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 CEN15LA205](https://openairdocs.org/ntsb/CEN15LA205.md): Pitts Model 12 · Burneyville, OK · Accident · Minor injuries · Limited investigation · Final report · Apr 18, 2015 · N12DR · Substantial damage
  > The partial loss of engine power due to contamination of the fuel system.
- [NTSB CEN15LA180](https://openairdocs.org/ntsb/CEN15LA180.md): Cessna 208B · Verdigris, OK · Accident · Minor injuries · Limited investigation · Final report · Mar 24, 2015 · N106BZ · Substantial damage
  > The fuel pump gear manufacturer’s allowance of set-up gears made from a nonconforming material to be put in the production inventory system, the installation of a nonconforming gear in the accident airplane’s production fuel pump, and the gear’s failure,…
- [NTSB CEN14FA434](https://openairdocs.org/ntsb/CEN14FA434.md): Piper PA 32-300 · Ardmore, OK · Accident · 1 fatal · Field investigation · Final report · Aug 16, 2014 · N4125W · Substantial damage
  > The partial loss of engine power for reasons that could not be determined because thermal damage to the engine prevented a complete examination.
- [NTSB CEN14LA199](https://openairdocs.org/ntsb/CEN14LA199.md): Ercoupe 415 C · Cookson, OK · Accident · Serious injuries · Limited investigation · Final report · Apr 12, 2014 · N2788H · Substantial damage
  > The pilot’s failure to properly secure the primer, which resulted in the loss of engine power during takeoff.
- [NTSB CEN13LA390](https://openairdocs.org/ntsb/CEN13LA390.md): Rockwell S-2R · Boise City, OK · Accident · No injuries · Limited investigation · Final report · Jun 12, 2013 · N2249U · Substantial damage
  > The total loss of engine power for reasons that could not be determined because postaccident examination of the engine and fuel system revealed no anomalies.
- [NTSB CEN12LA368](https://openairdocs.org/ntsb/CEN12LA368.md): Mooney M20F · Hooker, OK · Accident · Serious injuries · Limited investigation · Final report · Jun 12, 2012 · N6455Q · Substantial damage
  > The pilot’s loss of airplane control after a partial loss of engine power for reasons that could not be determined because postaccident examination of the airframe and engine revealed no evidence of mechanical malfunctions or failures, which resulted in an…
- [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 CEN10LA440](https://openairdocs.org/ntsb/CEN10LA440.md): Beech F35 · Enid, OK · Accident · No injuries · Limited investigation · Final report · Jul 27, 2010 · N3858B · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB CEN10LA272](https://openairdocs.org/ntsb/CEN10LA272.md): North American T-28A · Oklahoma City, OK · Accident · No injuries · Limited investigation · Final report · May 27, 2010 · N128AF · Substantial damage
  > The failure of the master rod bearing, which resulted in a loss of engine power.
- [NTSB CEN09CA563](https://openairdocs.org/ntsb/CEN09CA563.md): Halbert James H Rans S-7 · Short, OK · Accident · Minor injuries · Data collection · Final report · Sep 6, 2009 · N615JH · Destroyed
  > A partial loss of engine power for undetermined reasons.
- [NTSB CEN09LA325](https://openairdocs.org/ntsb/CEN09LA325.md): Cessna 182 · Skiatook, OK · Accident · Minor injuries · Limited investigation · Final report · May 23, 2009 · N4892D · Substantial damage
  > Loss of engine power for undetermined reasons.
- [NTSB CEN09CA192](https://openairdocs.org/ntsb/CEN09CA192.md): Champion 7FC · Thomas, OK · Accident · Minor injuries · Data collection · Final report · Mar 6, 2009 · N7681E · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [NTSB CEN09CA062](https://openairdocs.org/ntsb/CEN09CA062.md): Piper PA-18 · Foraker, OK · Accident · No injuries · Data collection · Final report · Nov 16, 2008 · N7096D · Substantial damage
  > The pilot's failure to maintain directional control during the precautionary landing. Contributing to the accident were the wind gusts.
- [NTSB DFW08LA176](https://openairdocs.org/ntsb/DFW08LA176.md): Piper PA-32RT-300T · Cookson, OK · Accident · Minor injuries · Limited investigation · Final report · Jun 29, 2008 · N132RR · Substantial damage
  > The partial loss of engine power during initial takeoff climb for undetermined reasons. Contributing to the accident was the lack of suitable terrain for the forced landing.

## 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" = 'OK' 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=OK

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