Cessna U206G N4596U

Summary

On 30 June 2010 at about 01:45 local time, a Cessna U206G registered N4596U, operated by Rusts Flying Service Inc, was involved in an accident near Iliamna, Alaska, United States. 6 people were on board and one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

30 June 2010 at 01:45

Classification

Accident

Location

Iliamna, Alaska, United States

Coordinates

59.6483, -155.4200

Aircraft

Cessna U206G

Registration

N4596U

Category

Airplane

Engines

1

Operator

Rusts Flying Service Inc

Operating rule

Part 135: Air Taxi & Commuter

Phase of flight

Not recorded

Route

King Salmon → Anchorage

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

ANC10LA056

1 person had minor injuries.

The total loss of engine power during cruise flight due to a fractured crankshaft.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The float-equipped airplane was in cruise flight on a sightseeing flight when there was a total loss of engine power. After several unsuccessful attempts to restart the engine, the pilot made a forced landing on tundra-covered terrain, and the airplane nosed over. Postaccident disassembly of the engine found that the crankshaft had fractured at the No. 2 journal. Laboratory examination of the crankshaft found "ladder cracking" associated with the journal fracture, which is consistent with a reduced oil flow and overheating of the surface area. At the time of the accident, the engine had 441 hours of operation since major overhaul, which was performed on October 21, 2008.

Quoted verbatim from the NTSB record.