At 13:18 MST, a Pilatus PC-7 being delivered from the factory in Switzerland crashed after a low approach at Jefferson County Airport. The Swiss-registered pilot, the sole occupant aboard, was killed. The pilot initiated the five-day trip on Jan. 10, with a final destination of Broomfield, where the company has a corporate office. The pilot asked the Tower for permission to perform a low go-around on runway 29R. The pilot was cleared for an optional approach and was instructed to continue in right traffic. Several witnesses observed the aircraft at approximately 100 to 150 feet agl at the midfield point of the runway perform two 360-degree rolls to the right, followed by one 360-degree roll to the left. The pilot then pulled up to vertical, followed by a right bank of 10 to 20 degrees and a rapid descent onto a taxiway.