CALIFORNIA - Fearless American skydiver Luke Aikins will leap out of a plane at 25,000 feet (7,6000 metres) without a parachute and attempt to land safely in the California desert in a live television broadcast dubbed "Heaven Sent".

The married 42 year-old third-generation skydiver, who has made about 18,000 jumps in his 25-year career, will leap on July 30 and land on his back on a device which organisers would only describe as a "slide".

"I'm going to do something that's definitely out there and most people in the world will think is crazy," Aikins has said here the other day.

Aikins, who claims it will be a world record for jumping without a parachute, previously worked with Felix Baumgartner on the Austrian daredevil's 2012 record skydive which started 24 miles (38 km) above earth.