Casualties unknown

Floatplane strikes opposite bank during takeoff from lake (N7761D)

Harding Lake, AK, US

On May 18, 1989, a Piper PA-18 (registration N7761D) was involved in an aviation accident near Harding Lake, AK. Investigators recorded the probable cause as: The pilot's inadequate compensation for variable gusty wind conditions during takeoff, which resulted in an inability to clear the opposite bank of the lake. 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 float-equipped aircraft failed to clear the opposite bank after takeoff from a small lake, striking terrain with its right main float and damaging the left wing due to variable gusty wind conditions.

What happened

The pilot was operating a float-equipped airplane on a small lake, attempting to execute a standard takeoff. During the initial climb phase, the aircraft was unable to gain sufficient altitude to clear the opposite bank of the waterway. Consequently, the right main float struck the terrain at the base of the bank. The momentum carried the airplane forward onto the adjacent shore, where it sustained damage to the left wing.

The investigation

Post-accident examination confirmed that the aircraft had impacted the ground during the takeoff roll and initial climb. The damage was localized to the right main float upon contact with the terrain and subsequent structural stress on the left wing as the fuselage settled onto the shore. No mechanical failure of the propulsion system or flight controls was identified as a primary factor in the inability to clear the obstacle.

Findings

The pilot assessed that variable gusty wind conditions significantly increased the takeoff distance required for the specific weight and configuration of the aircraft. The pilot acknowledged that he did not adequately compensate for these adverse weather conditions during the critical phase of flight. This lack of compensation contributed directly to the failure to clear the opposite bank.

Probable cause

The pilot's inadequate compensation for variable gusty wind conditions during takeoff, which resulted in an inability to clear the opposite bank of the lake.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X28220. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.