Over a month after the deadly crash claimed the lives of seven, including NASCAR icon Greg Biffle, the NTSB has released its preliminary report.

New details emerge after the preliminary report in the Greg Biffle plane crash is released.

Seven people died in the crash: Biffle; his wife, Cristina Grossu; his children, 14-year-old Emma and 5-year-old Ryder; pilots Dennis Dutton and his son, Jack; and Biffle employee Craig Wadsworth. The NTSB report stated that Dennis Dutton was the primary pilot, with Jack as his copilot.

The investigation of the December crash in Statesville that killed seven people is ongoing.

CHARLOTTE, N.C. (AP) — Hundreds in the NASCAR community gathered for a memorial service at Charlotte's Bojangles Coliseum on Friday for former driver Greg Biffle, his family and others who were killed in a plane crash last month.

Retired NASCAR driver Greg Biffle wasn't flying his plane before crash that killed him and six others, NTSB report shows