What happened
During the takeoff roll, the pilot encountered difficulty pitching the nose up to rotate the aircraft. The airplane subsequently became airborne but descended back onto the runway surface. Following this touchdown, the aircraft began to porpoise across the runway several times. During this sequence of oscillations, the nose and the right main landing gear collapsed.
Findings
This flight was the first operation conducted since the aircraft's annual inspection. While the pilot had verified the freedom of the flight controls prior to takeoff, he failed to verify the position of the elevator trim. Following the accident, it was determined that the elevator trim was in the full nose-down position. Furthermore, the pilot did not immediately retard the power after the aircraft returned to the runway and began porpoising.