The Gulfstream G-IV, N505GF, was substantially damaged during landing at Atlanta-DeKalb Peachtree Airport, Georgia, USA. The crew reported that after a normal en route flight, upon arrival into the Atlanta area, air traffic control advised them runway 34, which was 3,967-ft-long was in use, and runway 21L/03R, which was 6,001-ft-long was closed until 16:00, which was about 20 minutes from then. The crew requested to hold until the longer runway opened, but shortly thereafter, they advised that they would be able to land on runway 34. The pilot reported that the approach to landing was normal, but during the landing flare, he felt an “unusually hard impact.” The landing roll and taxi to the ramp were uneventful. During a hard landing inspection, substantial damage was found to the fuselage. The crew did not report any preimpact mechanical malfunctions or failures with the airplane. Photographs provided by the airport manager revealed that two tire tracks commenced in the grass about 5-10 ft prior to the runway 34 threshold, and lose dirt and grass was observed around the threshold. Probable Cause: “The flight crew’s incorrect glidepath and flare to landing, which resulted in a landing area undershoot and the main landing gear’s collision with the runway threshold.”