Casualties unknown

1998-06-06: Grumman G164 (N710Y) — Somonauk, IL

Somonauk, IL, US

On June 6, 1998, a Grumman G164 (registration N710Y) was involved in an aviation accident near Somonauk, IL. Investigators recorded the probable cause as: The pilot's inability to recover from a loss of control after the main landing gear struck a wheat field during gusty wind conditions while practicing aerial application maneuvers. 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 1781061362Data APIEditorial standards

A pilot conducting practice aerial application maneuvers lost control after a gust of wind caused landing gear to strike wheat, resulting in a terrain impact.

What happened

The aircraft was engaged in practice aerial application maneuvers over an agricultural area. The pilot reported executing spray runs across a wheat field when the airplane encountered a sudden gust of wind. This wind disturbance caused one of the main landing gear struts to strike the crop canopy. Despite attempts to recover, the pilot was unable to regain control before the airplane impacted the terrain.

The investigation

The investigation focused on the circumstances surrounding the loss of control during the low-altitude maneuver. Examination of the event revealed that the primary factor was the interaction between the aircraft's landing gear and the wheat field under gusty wind conditions. No mechanical failure or pre-existing damage to the aircraft components was identified as a contributing factor to the incident.

Findings

The accident occurred during a phase of flight where the aircraft was operating at low altitude and speed, typical for aerial application work. The pilot's account indicates that the loss of control was directly linked to the physical obstruction caused by the landing gear engaging with the wheat field. The gust of wind likely exacerbated the situation by altering the aircraft's attitude or trajectory at a critical moment. The inability to recover suggests that the event happened rapidly, leaving insufficient time or altitude for corrective action.

Safety message

Pilots conducting aerial application maneuvers should remain vigilant regarding wind conditions and terrain features. Encountering obstacles such as crop canopies with landing gear can lead to immediate loss of control. Maintaining adequate altitude and being prepared for sudden wind shifts are critical safety practices during these operations.

Probable cause

The pilot's inability to recover from a loss of control after the main landing gear struck a wheat field during gusty wind conditions while practicing aerial application maneuvers.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X10240. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.