Australian weatherman Grant Denyer passed out on live TV while flying a stunt plane. (Sunrise on 7 video screenshot)

An Australian weatherman who went up in a stunt plane to see if he could withstand the intensity of eight g-forces blacked out on live television during the flight Tuesday.

Sunrise on 7 weatherman Grant Denyer was up in a stunt plane on air, joking with the morning show hosts about not getting sick.

"I love forces and speed and dynamics," Denyer said. "I've been fascinated my whole life to do this and I don't want to do it anymore."

The pilot then says he's going to take the plane to eight g-forces. As the plane picks up speed, Denyer's eyes close and his head slumps back before the camera cuts out.

"Oh my god, he's passed out," the host says, holding her hands over her open mouth in surprise.

Denyer later said he didn't realize he'd blacked out.