Casualties unknown

Airplane Veers Left During Takeoff, Strikes Drainage Ditch and Noses Over (N7993A)

Salmon, ID, US

On August 21, 2004, a Tubbs PA-18-225 DD (registration N7993A) was involved in an aviation accident near Salmon, ID. Investigators recorded the probable cause as: Directional control not maintained during the takeoff roll resulting in a runway excursion and subsequent nose over. Factors include a drainage ditch. 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 that the airplane veered left shortly after beginning the takeoff roll, exited the runway, encountered a drainage ditch, and nosed over. The left wing and vertical stabilizer sustained substantial damage.

Accident Overview

During the takeoff roll, the airplane unexpectedly veered to the left. The pilot attempted corrective actions but was unable to prevent the aircraft from departing the runway edge. After leaving the runway surface, the airplane struck a drainage ditch, causing it to nosed over.

Pilot Report

According to a written statement from the pilot, the aircraft began to veer left shortly after the takeoff roll was initiated. The pilot reported that corrective measures were taken; however, the situation could not be corrected before the airplane exited the runway. The pilot also stated that winds were calm at the time of the accident.

Damage and Mechanical Condition

The accident resulted in substantial damage to the left wing and the vertical stabilizer. The pilot reported no preaccident mechanical malfunctions or failures with the airplane.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20041007X01596. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.