Casualties unknown

Aircraft Collides With Tree Following Power Loss During Agricultural Spray Operation (N6795Q)

Sampson, AL, US

On August 30, 1982, a Grumman G164B (registration N6795Q) operated by Jerry L. Wise was involved in an aviation accident near Sampson, AL. Investigators recorded the probable cause as: Loss of engine power during agricultural spraying operations, with the specific mechanical cause undetermined due to the lack of engine examination; however, the aircraft had a known history of supercharger problems. 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 2026-06-23Data APIEditorial standards

An aircraft experienced engine power loss while conducting a swath run for agricultural spraying. The pilot attempted to reduce weight but was unable to maintain altitude, resulting in a collision with a tree.

What happened

The incident occurred during an agricultural operation involving the application of chemicals across a field. While performing a standard swath run, the aircraft suddenly lost engine power. In an effort to improve performance and regain control, the pilot attempted to lighten the load by jettisoning some of the chemical payload. Despite these efforts, the aircraft was unable to maintain sufficient altitude and subsequently collided with a tree.

The investigation

Following the accident, authorities interviewed the pilot involved in the operation. During this interview, the pilot reported that the aircraft had been sold for salvage purposes shortly after the event. A mechanical examination of the engine was not possible due to the circumstances surrounding the sale and recovery of the wreckage. However, the pilot indicated that the aircraft had a documented history of supercharger problems, which may have contributed to the loss of power.

Findings

The primary factor in this accident was the sudden loss of engine power during a critical phase of flight. The pilot's attempt to lighten the load was a reasonable response but proved insufficient to prevent the collision. The lack of a physical examination of the engine leaves the exact mechanical cause undetermined, though the known history of supercharger issues suggests a potential mechanical failure.

Probable cause

Loss of engine power during agricultural spraying operations, with the specific mechanical cause undetermined due to the lack of engine examination; however, the aircraft had a known history of supercharger problems.

Frequently asked questions

What happened in the 30 Aug 1982 Grumman G164B accident near Sampson, AL?

An aircraft experienced engine power loss while conducting a swath run for agricultural spraying. The pilot attempted to reduce weight but was unable to maintain altitude, resulting in a collision with a tree.

What aircraft was involved and where did it happen?

The accident on 30 Aug 1982 involved a Grumman G164B, registration N6795Q, operated by Jerry L. Wise, at Sampson, AL.

What was the probable cause of the accident?

Loss of engine power during agricultural spraying operations, with the specific mechanical cause undetermined due to the lack of engine examination; however, the aircraft had a known history of supercharger problems.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20020917X02824. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.