Casualties unknown

Aircraft Collides With Trees Following Takeoff Due to Downdraft (N91248)

Hope, AK, US

On May 22, 1995, a Piper PA-18-160 (registration N91248) was involved in an aviation accident near Hope, AK. Investigators recorded the probable cause as: The pilot's encounter with a downdraft from the right during takeoff, which caused the airplane to drift left and contact trees. 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

Shortly after takeoff, the airplane drifted left and struck trees before impacting the ground, collapsing the right landing gear and damaging the propeller and wingtip.

What happened

The pilot reported that shortly after initiating takeoff, the aircraft began to drift toward the left side of the runway. As the plane gained altitude, it encountered a downdraft originating from the right, which contributed to the lateral deviation. The left wing subsequently made contact with trees located approximately 30 to 50 feet above ground level.

In an effort to avoid further obstacles, the pilot attempted to maneuver the aircraft away from additional trees. However, the airplane ultimately impacted the ground. This impact resulted in significant structural damage, specifically causing the right landing gear to collapse. The propeller and the right wingtip also sustained damage during the collision with the terrain.

The investigation

Investigation of the incident focused on the pilot's account of the flight path and the resulting damage to the airframe. The primary mechanical findings included the collapse of the right landing gear, damage to the propeller assembly, and destruction of the right wingtip. No other mechanical failures or pre-existing conditions were identified as contributing factors.

Findings

The investigation determined that the pilot encountered a downdraft from the right during the takeoff phase. This weather phenomenon caused the airplane to drift left, leading to the initial tree strike and subsequent ground impact. The downdraft was identified as the primary environmental factor contributing to the loss of control and collision with terrain.

Safety message

Pilots should be aware that sudden downdrafts can occur during takeoff and may cause significant lateral drift. Maintaining proper airspeed and being prepared for rapid wind changes is critical to avoiding obstacles in the immediate vicinity of the runway.

Probable cause

The pilot's encounter with a downdraft from the right during takeoff, which caused the airplane to drift left and contact trees.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001207X03398. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.