# NTSB investigations: Cessna U206G: Collision with terr/obj (non-CFIT)

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 WPR20CA232](https://openairdocs.org/ntsb/WPR20CA232.md): Cessna U206 · Nenana, AK · Accident · No injuries · Class 4 · Data collection · Final report · Jul 11, 2020 · N756DJ · Substantial damage
  > The pilot's failure to maintain directional control during a soft field takeoff on a dirt airstrip, which resulted in an impact with a vehicle.
- [NTSB GAA17CA549](https://openairdocs.org/ntsb/GAA17CA549.md): Cessna U206 · Chicken, AK · Accident · No injuries · Data collection · Final report · Sep 5, 2017 · N734GW · Substantial damage
  > The pilot’s failure to maintain clearance from a sign while taking off from a road.
- [NTSB ANC17LA053](https://openairdocs.org/ntsb/ANC17LA053.md): Cessna U206G · Kodiak, AK · Accident · No injuries · Limited investigation · Final report · Sep 4, 2017 · N16GP · Substantial damage
  > ***This probable cause was modified on November 27, 2018. Please see the docket for this accident to view the original probable cause.*** The pilot's improper decision to takeoff in an area of rough water and ocean swells, which resulted in a failure of the…
- [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 ANC16CA053](https://openairdocs.org/ntsb/ANC16CA053.md): Cessna U206G · Sleetmute, AK · Accident · No injuries · Data collection · Final report · Jul 31, 2016 · N206JC · Substantial damage
  > The pilot's failure to maintain adequate airspeed during the initial climb after taking off from a wet runway and his exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall.
- [NTSB ANC15FA050](https://openairdocs.org/ntsb/ANC15FA050.md): Cessna U206G · Trapper Creek, AK · Accident · 1 fatal · Field investigation · Final report · Jul 20, 2015 · N734VB · Destroyed
  > The pilot's failure to maintain clearance from trees while intentionally maneuvering close to the ground.
- [NTSB ANC13CA046](https://openairdocs.org/ntsb/ANC13CA046.md): Cessna U206G · Nenana, AK · Accident · No injuries · Data collection · Final report · Apr 24, 2013 · N756DJ · Substantial damage
  > Ice accretion in the right main landing gear wheel brake during departure, which prevented the right main landing gear from rotating on landing and resulted in a runway excursion and subsequent impact with a snow bank.
- [NTSB ANC12FA014](https://openairdocs.org/ntsb/ANC12FA014.md): Cessna U206G · Nanwalek, AK · Accident · Minor injuries · Field investigation · Final report · Dec 15, 2011 · N252AL · Substantial damage
  > The pilot’s decision to takeoff from a contaminated runway with unfavorable wind conditions, and his failure to maintain airspeed during the initial climb, which resulted in an aerodynamic stall. Contributing to the accident was the operator’s inadequate…
- [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 ERA11CA262](https://openairdocs.org/ntsb/ERA11CA262.md): Cessna U206G · Stow, MA · Accident · No injuries · Data collection · Final report · Apr 24, 2011 · N304EB · Substantial damage
  > The pilot's inadequate compensation for the crosswind condition and his failure to maintain directional control during landing.
- [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 ERA10FA027](https://openairdocs.org/ntsb/ERA10FA027.md): Cessna U206G · Elizabethton, TN · Accident · 2 fatal · Field investigation · Final report · Oct 22, 2009 · N120MS · Substantial damage
  > The pilot’s failure to remain clear of rising terrain while maneuvering at low altitude.
- [NTSB WPR09LA343](https://openairdocs.org/ntsb/WPR09LA343.md): Cessna U206G · Yellow Pine, ID · Accident · Serious injuries · Limited investigation · Final report · Jul 14, 2009 · N71BS · Substantial damage
  > The pilot's failure to maintain clearance from the trees while taking off in a high-density altitude. Contributing to the accident were the pilot's failure to perform pre-takeoff performance calculations, his positioning of the elevator trim in a nose-down…
- [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" = '470' 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/470/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.