Casualties unknown

Engine Failure Due to Oil Line Fracture at Troutdale (N6475B)

Troutdale, OR, US

On January 16, 1985, a Cessna T210M (registration N6475B) was involved in an aviation accident near Troutdale, OR. Investigators recorded the probable cause as: The fracture of the external oil line from the engine oil scavenger pump to the turbocharger, which led to a loss of oil and subsequent crankshaft seizure. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-06-20Data APIEditorial standards

Aircraft suffered an engine failure shortly after takeoff from Troutdale due to a fractured oil line, resulting in a forced landing short of the runway.

What happened

Shortly after takeoff, the pilot noticed a distinct ticking sound coming from the engine. In response, the pilot reduced power and turned back toward Troutdale. As the aircraft was making a 360-degree turn to align with the runway, the engine quit over the threshold of Runway 07. The aircraft touched down short of the runway, contacting small bushes and trees along the way.

The investigation

A post-accident inspection revealed that the external oil line connecting the engine oil scavenger pump and the turbocharger had fractured. This failure allowed for the loss of all but one and a half quarts of oil, which ultimately resulted in a crankshaft seizure.

Probable cause

The fracture of the external oil line from the engine oil scavenger pump to the turbocharger, which led to a loss of oil and subsequent crankshaft seizure.

Frequently asked questions

What happened in the 16 Jan 1985 Cessna T210M accident near Troutdale, OR?

Aircraft suffered an engine failure shortly after takeoff from Troutdale due to a fractured oil line, resulting in a forced landing short of the runway.

What aircraft was involved and where did it happen?

The accident on 16 Jan 1985 involved a Cessna T210M, registration N6475B, at Troutdale, OR.

What was the probable cause of the accident?

The fracture of the external oil line from the engine oil scavenger pump to the turbocharger, which led to a loss of oil and subsequent crankshaft seizure.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X35612. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.