Greg Biffle

Federal safety officials have concluded that retired NASCAR driver Greg Biffle was not flying his jet when it crashed last month, killing him and six others. The National Transportation Safety Board released a preliminary report on Friday.

Hundreds from the NASCAR community gathered at Charlotte's Bojangles Coliseum for a memorial service honoring former driver Greg Biffle, his family, and others killed in a plane crash last month.

The National Transportation Safety Board is continuing its investigation into a plane crash at Statesville Regional Airport that killed seven people, including former NASCAR driver Greg Biffle, his wife and two children.

Federal investigators are trying to determine why a business jet carrying retired NASCAR driver Greg Biffle and six others crashed shortly after takeoff in North Carolina. The Cessna C550 hit light poles and trees before erupting into flames on Thursday, killing everyone on board.