Incident
During a takeoff roll from an elevated dirt airstrip, an agricultural airplane stalled and impacted the terrain. The pilot reported that soon after the tail wheel lifted off the ground, he observed a white pickup truck entering the airstrip, which was also used as an access road. To avoid a collision, the pilot prematurely pulled the airplane off the ground. The airplane then stalled and struck the terrain.
Aircraft Loading
The airplane was topped off with fuel, and the hopper was filled with rice seed to be dispensed on a nearby field. The pilot, who had accumulated 14,232 flight hours, noted that the takeoff ground roll for the previous flight had been much shorter due to a lighter load and cooler temperature.
Driver Information
The driver of the white pickup truck was the farmer whose fields were being seeded. He had observed previous takeoffs but was not aware of the airplane's loading for this flight.
Probable Cause
The probable cause is the pilot prematurely pulling the airplane off the ground during the takeoff roll to avoid colliding with a truck that entered the airstrip, resulting in a stall.