Eighteen months away from a complete report on the plane crash that killed three people in Temple on Thursday, one thing is already clear to Doug Wigington: the people who survived the crash were lucky.Wigington, an air safety investigator with the National Transportation Safety Board in Arlington, said at a Friday press conference that witnesses said they saw the plane coming in almost perpendicular to Hickory Road, that it hit a tree, a wire and two more trees before crashing into a house.