From the National Transportation Safety Board:
"The National Transportation Safety Board is investigating a runway incursion that occurred on Friday morning at the Charlotte Douglas International Airport (CLT) involving a general aviation aircraft and a regional jet airliner bound for New Bern, NC (EWN).
At about 10:17 a.m. on May 29, a PSA Airlines CRJ-200 regional jet operated as US Airways Express flight 2390, was cleared for takeoff on runway 18L. After the regional jet was into its takeoff roll, a Pilatus PC-12, a single engine turboprop aircraft, was cleared to taxi into position and hold farther down the same runway in preparation for a departure roll that was to begin at the taxiway A intersection. After the ground-based collision warning system (ASDE-X) alerted controllers to the runway incursion, the takeoff clearance for the regional jet was cancelled. The pilot of the PC-12, seeing the regional jet coming down the runway on a collision course, taxied the PC-12 to the side of the runway. The FAA reported that the regional jet stopped approximately 10 feet from the PC-12.
Visual meteorological conditions prevailed with 9 miles visibility. There were no reported injuries to any of the 42 passengers or crew of three aboard the jet, or to any of those on the PC-12."