Daily Journal TUPELO – The National Transportation Safety Board has released the preliminary results of its investigation of the plane crash on May 16. The report doesn’t point to a specific cause for the crash. All four people onboard were killed when the Beechcraft Bonanza A36TC went down in a wooded area about a half-mile north of the Tupelo Regional Airport runway . The victims were pilot Henry Jackson, 75; his wife Gwynn Groggel, 70; Charles Torti, 69; and Carrie Torti, 59.