# NTSB investigations: Cessna U206G: Loss of engine power (total)

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 CEN25LA301](https://openairdocs.org/ntsb/CEN25LA301.md): Cessna U206G · Kerrville, TX · Accident · No injuries · Class 4 · Limited · Final report · Jul 25, 2025 · N756XY · Substantial damage
  > The pilot’s failure to confirm the fuel quantity before flight which resulted in a loss of engine power due to fuel starvation.
- [NTSB WPR24LA314](https://openairdocs.org/ntsb/WPR24LA314.md): Cessna U206G · West Sacramento, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 19, 2024 · N6522Z · Substantial damage
  > Failure of the No. 4 cylinder fuel injection assembly tube and subsequent total loss of engine power.
- [NTSB ERA17LA307](https://openairdocs.org/ntsb/ERA17LA307.md): Cessna U206 · Harpswell, ME · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 1, 2017 · N4615X · Substantial damage
  > A total loss of engine power due to maintenance personnel's failure to apply proper torque to the cylinder flange nuts and through bolts, which resulted in shifting of the Nos. 1, 2, and 3 main bearings, loss of lubrication, and failure of the crankshaft.
- [NTSB CEN16LA335](https://openairdocs.org/ntsb/CEN16LA335.md): Cessna U206G · Cave-In-Rock, IL · Accident · Serious injuries · Limited investigation · Final report · Aug 25, 2016 · N891LL · Substantial damage
  > A total loss of engine power due to air entering the fuel system for reasons that could not be determined based on available information. Contributing to the accident was the pilot’s inability to restart the engine due to the check valve assembly design.
- [NTSB ERA14LA193](https://openairdocs.org/ntsb/ERA14LA193.md): Cessna U206G · Louisa, VA · Accident · Serious injuries · Limited investigation · Final report · Apr 11, 2014 · N156SA · Substantial damage
  > The pilot's decision to continue operation of the airplane with known mechanical issues (fluctuating oil pressure and metal in the oil filter), which was the result of undertorqued cylinder through bolts. Contributing to the accident was the mechanic's…
- [NTSB ANC11LA103](https://openairdocs.org/ntsb/ANC11LA103.md): Cessna U206G · Beluga, AK · Accident · No injuries · Limited investigation · Final report · Sep 15, 2011 · N1779R · Substantial damage
  > The total loss of engine power for an undetermined reason.
- [NTSB ERA11FA078](https://openairdocs.org/ntsb/ERA11FA078.md): Cessna U206G · Leverett, MA · Accident · 2 fatal · Field investigation · Final report · Dec 5, 2010 · N9742Z · Substantial damage
  > A total loss of engine power due to the fatigue failure of the crankshaft, which resulted from improper tightening of the cylinder hold-down nuts.
- [NTSB ANC10LA074](https://openairdocs.org/ntsb/ANC10LA074.md): Cessna U206G · Homer, AK · Accident · No injuries · Limited investigation · Final report · Aug 19, 2010 · N9815M · Substantial damage
  > The loss of engine power for an undetermined reason, resulting in an off-airport emergency landing and subsequent nose over.
- [NTSB ANC10LA056](https://openairdocs.org/ntsb/ANC10LA056.md): Cessna U206G · Iliamna, AK · Accident · Minor injuries · Limited investigation · Final report · Jun 30, 2010 · N4596U · Substantial damage
  > The total loss of engine power during cruise flight due to a fractured crankshaft.
- [NTSB ANC08LA113](https://openairdocs.org/ntsb/ANC08LA113.md): Cessna 206 · Galena, AK · Accident · Minor injuries · Limited investigation · Final report · Aug 31, 2008 · N4886U · Substantial damage
  > The en route loss of engine power due to a mechanic's failure to tighten a fuel line fitting, which became disconnected in flight.

## 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.aircraft_model_code IN ('2073356', '2073315', '2073314')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.case_mkey = x.case_mkey AND s.aircrafts_position = x.position AND s."tier2Number" = '341' 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/341/sequence?model=2073356

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.