The Ulladulla daredevil marked his birthday yesterday with a hair-raising 220km/h freefall towards the Wollongong coastline, making him the youngest boy to ever tandem skydive into the city.

Preparing for the jump in a plane around 4000 metres above the earth, the full-of-beans Nate joked around with tandem masters and told them: "I'm gonna be a legend!"

He was joined in the air by his parents Fred and Karina and three siblings - Crystal, 20, Angus, 17, and Sascha, 10.

"I jumped out and I was scared, and just when [the tandem master] pulled the chute up, I wasn't scared," Nate told the Mercury soon after landing at Wollongong's North Beach, about 4pm.

"I saw Dad, I saw Sascha and Crystal, and I saw buildings, and I saw the water, and I saw ships and I saw everything."

The four Moore children have made their maiden skydives at progressively younger ages, starting with Crystal, who jumped at 14, Angus (12) and Sascha (10).

Nate visited his first drop zone when he was two years old.

Mr Moore, who works for Skydive the Beach and Beyond with more than 900 jumps under his belt, said he wanted his children to learn to control their fears.

"If they can look at life with less fear and more excitement, that's good," he said.

Nate joins Mia Begic, who set out from Moruya airport as an eight-year-old in 2011, as the South Coast's youngest known skydivers.

Children over the age of 12 can tandem skydive in Australia with approval from a parent or guardian.

Younger children must seek special approval from the Australian Parachute Federation, and be big enough to fit properly into a harness.

Still perfecting his letter-writing skills, Nate made his request in a video presentation.

He is already planning his next jump.