Cessna TU206G N756YC

Summary

On 29 July 1998 at about 19:15 local time, a Cessna TU206G registered N756YC, operated by BLM, was involved in an accident near Burns, Oregon, United States. 2 people were on board and one had minor injuries. The aircraft was substantially damaged. No probable cause statement is available for this record.

Date

29 July 1998 at 19:15

Classification

Accident

Location

Burns, Oregon, United States

Coordinates

43.5905, -118.8899

Aircraft

Cessna TU206G

Registration

N756YC

Category

Airplane

Engines

1

Operator

BLM

Operating rule

Public Use

Purpose of flight

Public Use

Phase of flight

Not recorded

Route

Vale → Unknown

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

SEA98TA152

1 person had minor injuries.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

The pilot reported that during cruise flight, the engine suddenly lost power. He attempted a restart without success. During the forced landing to a road in a canyon, the airplane suddenly lost altitude and touched down hard in sage brush short of the road. During the landing roll, the airplane collided with a barbed wire fence which turned the aircraft perpendicular to the road. After the airplane was recovered, the engine was examined. During the examination, it was found that the crankshaft had failed. The crankshaft was inspected by a metallurgist who reported that the crankshaft was broken through the crankcheek between the number two main bearing journal and the number two connecting rod journal. The metallurgist stated that 'the features over the major portion of the fracture were typical of fatigue cracking that initiated from the aft radius of the number 2 main bearing journal and propagated through more than 90 percent of the crankcheek before final separation.' The metallurgist reported that evidence of fretting was noted on the parting line faces between the connecting rod arm and cap. The joint between the two components could have been loose and may have created spinning of the bearing inserts.

Quoted verbatim from the NTSB record.