Casualties unknown

Pilot hard-lands aircraft during practice water landing maneuvers (N9377T)

Eveleth, MN, US

On August 2, 1991, a Cessna 180 (registration N9377T) operated by Kenneth L. Heinsch was involved in an aviation accident near Eveleth, MN. Investigators recorded the probable cause as: The pilot's failure to maintain adequate airspeed during a power-off landing, which resulted in a hard landing. 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 2026-06-19Data APIEditorial standards

A private pilot practicing takeoffs and landings at a lake three miles from his destination experienced a hard landing after failing to add power in time during a power-off approach.

What happened

The pilot, holding a private pilot certificate with a single-engine land rating, was en route to a different airport to complete the practical test for a single-engine sea rating. During the flight, he deviated from his planned route and stopped at a lake located approximately three miles from his intended destination. The purpose of this stop was to practice takeoffs and landings in preparation for the upcoming checkride.

While conducting these maneuvers, the pilot attempted a power-off landing. He approached the runway area on final approach but found himself high and slow relative to the desired glide path. As he continued the descent, he failed to apply sufficient engine power in time to arrest the sink rate. This resulted in a hard landing impact with the surface.

The investigation

The investigation focused on the pilot's actions during the practice session. It was determined that the aircraft was being used for training purposes unrelated to the official checkride at the time of the incident. The mechanical condition of the aircraft was not cited as a factor in the event.

Findings

Contributing factors included the pilot's decision to delay his flight to practice maneuvers and his failure to maintain proper airspeed and power settings during the approach. Specifically, the pilot did not add power in time to stop the sink rate while attempting a power-off landing.

Probable cause

The pilot's failure to maintain adequate airspeed during a power-off landing, which resulted in a hard landing.

Frequently asked questions

What happened in the 2 Aug 1991 Cessna 180 accident near Eveleth, MN?

A private pilot practicing takeoffs and landings at a lake three miles from his destination experienced a hard landing after failing to add power in time during a power-off approach.

What aircraft was involved and where did it happen?

The accident on 2 Aug 1991 involved a Cessna 180, registration N9377T, operated by Kenneth L. Heinsch, at Eveleth, MN.

What was the probable cause of the accident?

The pilot's failure to maintain adequate airspeed during a power-off landing, which resulted in a hard landing.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X17817. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.