19990824013439A

Acft struck a berm on take-off and went into an alfalfa field, other circumstances are unknown. (.19) on March 24, 1999, at 0248 hours mountain standard time, an Ayres corporation S2R-G10, N20523, collided with terrain at the end of the runway at a private airstrip near Stanfield, Arizona. The airplane, operated by crop first aviation inc., Stanfield, was substantially damaged. The commercial pilot sustained minor injuries. The local aerial application flight, conducted under the provisions of 14 CFR part 137, was originating at the time of the accident. Night visual meteorological conditions prevailed and no flight plan was filed. The pilot reported that the purpose of the flight was to spray a cotton field with insecticide. He stated that the aircraft was loaded with approximately 430 gallons of chemicals and about 110 gallons of fuel. He stated that he used the entire length of the runway, 2,200 feet, for his takeoff roll. The pilot reported that he realized he was not going be able to takeoff before reaching the end of the runway and he attempted to slow the airplane. The aircraft's landing gear impacted a ditch and berm that rose about 6 to 8 feet above the runway sur face. The pilot stated that the aircraft was just becoming airborne at the time of impact. The pilot stated that he had not experienced any mechanical problems with the aircraft or engine prior to the accident. He reported that the engine sounded normal during the takeoff roll. Three ground crewmembers reported that they didn't notice any unusual noises from the engine, but they noted that it seemed like a "slow acceleration." (-23) while attempting to take off for night time spray ops the aircraft tail wheel struck an embankment at the departure end of the runway causing aircraft to pitch down and impact in an alfalfa field.