Casualties unknown

Private Pilot Encounters Downdraft During Pre-Landing Flyover, Aircraft Stalls and Strikes Ground (N4418Z)

Skwentna, AK, US

On September 8, 2003, a Piper PA-18-160 (registration N4418Z) was involved in an aviation accident near Skwentna, AK. Investigators recorded the probable cause as: The pilot's failure to maintain airspeed, which resulted in an inadvertent stall, and subsequent in-flight collision with terrain. A factor associated with the accident was a downdraft. 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 private pilot attempting a flyover of a gravel landing site applied flaps and experienced a downdraft, causing both wings to stall. The aircraft struck the ground nose-down about 200 feet from the approach end.

Incident Overview

A private pilot was maneuvering to land on a 1,200-foot-long gravel site. As part of the approach, the pilot performed a flyover of the intended landing area. During this maneuver, he selected 10 degrees of wing flaps. Shortly thereafter, he reported that a "downdraft came over the wings and stalled them both."

Impact and Damage

The airplane subsequently struck the ground in a nose-down attitude. The wreckage came to rest approximately 200 feet from the approach end of the intended landing site. Post-accident examination revealed structural damage to the wings, fuselage, and empennage. The pilot noted that no preaccident mechanical anomalies had been observed with the airplane.

Pilot Account

The pilot stated that the stall occurred suddenly following the application of flaps and the encounter with the downdraft. No other factors were mentioned in his report.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20030912X01526. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.