Multi-engine aircraft impact during instructional flight

Casualties unknown • Ontario, OR, US

A multi-engine aircraft crashed near its destination airport during an instructional flight, resulting in an impact following a left wing low attitude.

What happened

During a FAR Part 91 instructional flight, a multi-engine airplane was being operated by a second pilot who had recently purchased the aircraft to pursue a multi-engine rating. This flight marked the pilot's third flight in two days in this specific aircraft.

Witnesses observed the aircraft approaching the airport from the southeast in a level flight attitude, noting that the plane appeared to be traveling slowly, similar to a landing procedure. Shortly after this observation, a witness reported that the airplane began to "auger" toward the ground with a left wing low attitude. The aircraft reportedly completed approximately three revolutions before impacting the terrain in a nose low attitude. The accident occurred approximately two miles from the destination airport.

The investigation

A post-crash examination of the airframe was conducted, during which investigators noted that the emergency hydraulic pump handle was in the full aft (extended) position. An examination of both engines and the airframe revealed no evidence of any pre-crash failure or mechanical anomaly.

Frequently asked questions

What happened in the 2004-07-15 Piper PA-23-160 accident near Ontario, OR?

A multi-engine aircraft crashed near its destination airport during an instructional flight, resulting in an impact following a left wing low attitude.

What aircraft was involved and where did it happen?

The accident on 2004-07-15 involved a Piper PA-23-160, registration N4439P, at Ontario, OR.

What was the probable cause of the accident?

The pilot's failure to maintain airspeed resulting in an aerodynamic stall while maneuvering for an approach to land.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20040722X01035. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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