Gulfstream Aerospace GIV, Sugar Land, Texas, Nov. 11, 2007–When the GIV touched down at the Sugar Land Regional Airport, the nosegear collapsed, substantially damaging the jet. The pilot told investigators, “When the nosewheels touched down, a violent vibration or shaking was felt, full back force was applied to the control yoke and the vibration eased until the aircraft slowed further and the vibration returned.”