20020704015739A

(-23) On July 4, 2002, around 0845, N777XP veered off the left side of runway 28 during landing at Prineville, OR. The aircraft went into some soft dirt collapsing it's landing gear and damaging the propeller. Mr. Welborn, pilot-in-command, said he was on his second touch and go and just as he was touching down the aircraft's throttle came off into his hand. By design the engine then went to full power. Mr. Welborn said he then immediately shut the engine down. The aircraft went off the runway as the engine was being shut down. (.19) on July 4, 2002, approximately 0845 pacific daylight time, a homebuilt welborn pulsar xp, N777XP, registered to and being flown by a private pilot, was substantially damaged during landing at the Prineville Airport, Prineville, Oregon. The pilot was uninjured. Visual meteorological conditions prevailed and no flight plan had been filed. The flight, which was personal, was operated under 14 CFR 91, and originated from a non-airspaced landing site approximately eight miles southeast of Prineville. The pilot reported that he departed the landing site en route to Prineville to practice landi ngs at the Prineville Airport. Upon arrival he conducted his first landing successfully. The pilot reported that during the second landing on runway 28 the throttle "came off in his hand," the engine went to full power, and the aircraft bounced back into the air and then returned to the runway surface. The pilot then shut the engine down as the aircraft began veering left and all three landing gear collapsed as the aircraft departed the runway.