Accident Overview
A helicopter engaged in crop pollination operations experienced a loss of rotor rpm while flying at an altitude of six to seven feet above the ground. The aircraft was traveling at an airspeed of 20 knots over a rice field. According to the pilot, the helicopter began to settle after the rotor speed dropped.
Sequence of Events
As the helicopter descended, its landing skid became entangled in the rice plants. The aircraft subsequently impacted the rice field and came to rest on its side. The collision with the terrain caused the tail boom and main rotor to separate from the fuselage.
Post-Accident Examination
An inspection of the helicopter and its systems was conducted by a Federal Aviation Administration (FAA) inspector. The examination revealed no preimpact mechanical failures or malfunctions.
Operational Context
The flight was being conducted for the purpose of cross-pollinating the rice crop. The pilot was operating at a very low altitude and slow airspeed, typical for such agricultural applications.