What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) April 29, 2007 at approximately 1200 hrs. Off duty law enforcement officer privacy data omitted was driving his privately owned vehicle southbound on highway 70 north of Olivehurst exit, Olivehurst, CA. He observed what appeared to be a helicopter (barnett J4B-2 gyrocopter) in the air. He continued to observe the gyrocopter when he "noticed something fly off of it." Then the gyrocopter began a downward nose dive towards the ground. Its trajectory resulted in a colliding through a grouping of eucalyptus trees that parallel highway 70. The gyrocopter was dismantled by penetrating through the trees and then violently impacting roadway on the rightside of the fuselage. Fatal injuries were suffered by the pilot in command who was still safety belted in the cockpit.
As the FAA filed it
(-23) APRIL 29, 2007 AT APPROXIMATELY 1200 HRS. OFF DUTY LAW ENFORCEMENT OFFICER ^PRIVACY DATA OMITTED^ WAS DRIVING HIS PRIVATELY OWNED VEHICLE SOUTHBOUND ON HIGHWAY 70 NORTH OF OLIVEHURST EXIT, OLIVEHURST, CA. HE OBSERVED WHAT APPEARED TO BE A HELICOPTER (BARNETT J4B-2 GYROCOPTER) IN THE AIR. HE CONTINUED TO OBSERVE THE GYROCOPTER WHEN HE "NOTICED SOMETHING FLY OFF OF IT." THEN THE GYROCOPTER BEGAN A DOWNWARD NOSE DIVE TOWARDS THE GROUND. ITS TRAJECTORY RESULTED IN A COLLIDING THROUGH A GROUPING OF EUCALYPTUS TREES THAT PARALLEL HIGHWAY 70. THE GYROCOPTER WAS DISMANTLED BY PENETRATING THROUGH THE TREES AND THEN VIOLENTLY IMPACTING ROADWAY ON THE RIGHTSIDE OF THE FUSELAGE. FATAL INJURIES WERE SUFFERED BY THE PILOT IN COMMAND WHO WAS STILL SAFETY BELTED IN THE COCKPIT.