19990306002032A

Acft was making touch and go landings on rwy 31 when it collided with N4312A, a Piper PA-28 acft, which was taking off from intersecting rwy 18, both acft were destroyed, the pilot of N189DA has serious injuries and the student has minor injuries, the 3 people on board N4312A were not injured. Other circumstances are unknown. (.19) on March 6, 1999, approximately 1330 mountain standard time, a Piper PA-28-235, N4312A, and a diamond da 20-A1, N189DA, were destroyed when they collided on the ground at the Provo Municipal Airport, Provo, Utah. N4312A was on its takeoff roll on runway 18, and N189DA was doing touch and go landings on runway 31. The private pilot and two passengers aboard N4312A escaped injury. The flight instructor aboard N189DA was seriously injured, and his student pilot received minor injuries. Visual meteorological conditions prevailed at the time, and flight plans had not been filed by either pilot. Both flights were being conducted under title 14 CFR part 91. The flight on N4312A was for business and was originating at the time of the accident. The flight of N189DA was for instruction and had originated at Provo approximately 30 minutes before the accident. The pilot of N4312A said that after completing his pre-takeoff checklist, he put his earphones on and heard the pilot of one airplane announce that he was turning onto the base leg for runway 31. Another pilot announced, "I'll follow you in." The pilot of N4312A announced over the radio that he would be taking off on runway 18 as soon as the other two airplanes had landed. When these two airplanes had landed, the pilot of N4312A began his takeoff roll. As N4312A approached the runway intersection, the pilot saw N189DA on ground roll and approaching from his left. The pilot of N4312A immediately closed the throttle and applied the hand brake, which locked up the brakes. He applied left rudder in attempt to go behind N189DA. He then applied back elevator pressure and full left aileron in an attempt to raise the right wing over the top of N189DA. N4312A collided with N189DA and caught fire. All three occupants evacuated the airplane. The two occupants of N189DA were extricated by CFR personnel and taken to a local hospital. Their injuries have precluded an interview. The wind, recorded 25 minutes after the accident, was from 280 degrees at 6 knots. (-23)CFI and student were doing touch and goes, using active runway 31 CFI was finished with the lesson and landed long on runway 31, and impacted with cherokee taking off on runway 18. (.4) N189DA, a diamond-da 20-A1 was one of several airplanes in the traffic pattern for runway 31, which was the active runway. The airplane landed and was on landing rollout when it was struck by N4312A, a Piper PA-28-235 that was on takeoff roll on runway 18. The collision occurred at the intersection of runways 31 and 18. The pilot of the Piper said he saw two airplanes in the traffic pattern, and heard both pilots advise of their positions and intentions. The pilot of the Piper announced that he would be taxiing onto runway 18 for departure because he had 'plenty of time to depart before either of the two aircraft were in position to land.' He did not see the diamond, which was ahead of the other two airplanes. Two other pilots reported having near collisions with the Piper earlier that day, and one pilot reported having a near collision with the Piper two months earlier.