Casualties unknown

Helicopter Rolls Onto Side After Engine Failure During Spraying Operation (N10415)

Monticello, AR, US

On November 8, 1994, a Hughes 269A (registration N10415) operated by Ark-la-tex Helicopters, Inc. was involved in an aviation accident near Monticello, AR. Investigators recorded the probable cause as: The loss of engine power was due to a failed piston rod end retaining bolt. 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

During spraying, the helicopter lost engine power, prompting an autorotation. The pilot avoided a log pile by extending the glide, then landed in soft mud, causing the aircraft to roll onto its side.

Incident Overview

A helicopter experienced a loss of engine power while conducting spraying operations. The pilot initiated an autorotation to manage the descent. During the descent, the pilot observed a pile of logs in the intended flight path and extended the glide to avoid the obstacle.

Landing and Aftermath

The pilot touched down in the only available space. The terrain consisted of soft, wet mud, into which the helicopter sank. The aircraft subsequently rolled onto its side.

Examination Findings

An examination of the helicopter determined that the loss of engine power was caused by a failed piston rod end retaining bolt.

Probable cause

The loss of engine power was due to a failed piston rod end retaining bolt.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001206X02592. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.