Casualties unknown

Airplane Leaves Runway Following Right Engine Failure During Takeoff (N6592Y)

Osceola, WI, US

On August 28, 1999, a Piper PA-23-250 (registration N6592Y) was involved in an aviation accident near Osceola, WI. Investigators recorded the probable cause as: the pilot's improper preflight decision to attempt a takeoff with one engine inoperative. 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 2026-06-10Data APIEditorial standards

A pilot reported a 2-hour struggle to start the right engine, which then lost power during takeoff. A witness saw the airplane with a stationary right propeller and left engine at full power, eventually departing the runway and leaving three trails ending at a telephone box and berm.

Incident Overview

A pilot reported that it took two hours to start the right engine of the accident airplane. During the subsequent takeoff roll, the right engine lost power. A witness observed the pilot and the airplane on the ramp prior to the flight, where the pilot stated that the starter for the right engine was inoperative and would not start that engine.

Witness Account

The witness had a clear view of the first 700 feet of runway 10. He saw the accident airplane proceed down the runway with the right engine not running. The right engine's propeller blades were stationary, positioned at the 4 and 10 o'clock positions. The left engine revved for takeoff, and the airplane rolled down the runway. During the roll, the airplane moved to the right side of the runway, then power was reduced. The airplane realigned with the runway's centerline, and the left engine revved up again.

Examination

After the accident, examination of the scene revealed three trails in the terrain past the paved departure end of the runway. These trails led up to a telephone switching box and a berm.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X19464. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.