The Biffles, their son and his daughter were among seven killed in the Cessna Citation crash at Statesville Regional Airport in North Carolina on Thursday.

Biffle and his family were killed in a plane crash Thursday after a Cessna Citation attempted to land at Statesville Regional Airport shortly after taking off. A total of seven people, including members of Biffle's family, are believed to have died in the crash, according to NASCAR's official social media account.

The crash at Statesville Regional Airport killed popular NASCAR driver Greg Biffle, his wife and two kids, and three other people.

The couple, who were killed in a plane crash along with their two children and three others, have a legacy of giving back, Cristina's mother Cathy Grossu tells PEOPLE

“He had his own helicopter and he was doing extractions on his own,” United Cajun Navy vice president Brian Trascher, who worked with Biffle to help those affected, told Fox Carolina. “I’m like, ‘Here’s this guy, like a race car driver. He’s got a helicopter. This guy’s like Batman.’”