Casualties unknown

Airplane Impacts Hills While on Second Spraying Flight (N2331Y)

Prosser, WA, US

On October 10, 1996, a Piper PA-36-300 (registration N2331Y) was involved in an aviation accident near Prosser, WA. Investigators recorded the probable cause as: failure of the pilot to maintain clearance from the terrain, while en route to an apple orchard that he intended to spray. A factor relating to the accident was: the turbulent wind condition over the hills. 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

An airplane on its second flight to spray an apple orchard impacted hills between the departure airport and the orchard. No preimpact malfunction was found.

Accident Overview

An airplane, engaged in agricultural spraying operations, struck hills while on its second flight of the day. The aircraft was en route from its departure airport to an apple orchard, where it was to apply chemicals. The hills were located in the path between the departure airport and the orchard.

Flight Details

The pilot had earlier completed a first flight to the orchard. According to the pilot's report, the first flight encountered turbulence along the route, but winds at the orchard were calm. The second flight was intended to continue the spraying task.

Investigation Findings

Investigators examined the wreckage post-accident. They found no evidence of a preimpact malfunction or failure of the aircraft or its engine. The findings indicate that the aircraft and engine were operating normally prior to impact. No mechanical deficiencies were identified.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001208X06976. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.