Pilot-in-command Lowell Lawson, 67, and copilot James Robinson were killed June 13 when their King Air 200 crashed on a Part 135 positioning flight from its home base at Summerville Airport, W. Va., to pick up passengers at Greenbriar Valley Airport in Lewisburg, about 30 miles southeast. The aircraft wreckage was located about 15 miles west of Greenbriar on or near Big Mountain, where the terrain rises to more than 3,900 feet msl. Weather at Lewisburg around the time of the crash was reported as seven miles visibility and overcast at 1,600 feet. No flight plan was filed, according to the FAA preliminary report. N200BE was registered to Land Use of Summerville and was being operated as an on-demand air taxi by Summerville-based Rader Aviation.