Casualties unknown

2007-06-12: Piper PA-18-150 (N4018Z) — Hailey, ID

Hailey, ID, US

On June 12, 2007, a Piper PA-18-150 (registration N4018Z) was involved in an aviation accident near Hailey, ID. Investigators recorded the probable cause as: The pilot's failure to maintain directional control during the takeoff ground roll. A tailwind was a factor. 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 1781061362Data APIEditorial standards

During a downwind takeoff on runway 13, the pilot raised the tail and the wind pushed the aircraft off the runway, leading to a ground loop. No mechanical issues were reported.

Accident Overview

A pilot experienced a ground loop while attempting a downwind takeoff on runway 13. The pilot reported that after raising the tail of the aircraft, the wind pushed the aircraft upward and to the left, causing it to depart the runway surface. While trying to correct the deviation, the aircraft ground looped.

Wind Conditions

The wind at the time was reported from 340 degrees at eight knots. This resulted in a tailwind component for the takeoff on runway 13.

Aircraft and Mechanical Status

The pilot stated that there were no mechanical failures or malfunctions with the aircraft at the time of the accident. The aircraft performed as expected, and the event was attributed solely to the wind conditions and pilot control inputs during the takeoff roll.

Sequence of Events

According to the pilot's report, the takeoff began normally on runway 13. As the pilot raised the tail to the takeoff attitude, a gust or steady wind from the left rear pushed the aircraft's tail to the right, causing the nose to yaw left. The pilot attempted to correct with rudder and/or brake inputs, but the aircraft continued to veer left, departing the runway. The subsequent ground loop caused the aircraft to rotate around its vertical axis, likely resulting in damage to the landing gear or airframe, though the extent is not specified in the report.

Pilot Actions

The pilot's attempted correction was insufficient to keep the aircraft on the runway. The pilot did not report any other contributing factors such as distractions or health issues. The report implies that the pilot was aware of the downwind condition but proceeded with the takeoff.

Conclusion

The accident was a result of a loss of directional control during a downwind takeoff in gusty crosswind conditions. No mechanical deficiencies were identified, placing the cause entirely on the environmental conditions and pilot handling.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20070712X00929. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.