It was nearly dark when the helicopter landed on the beach, and a group of about 10 bystanders helped emergency services, he said.
The victim's brother travelled in the helicopter and told crew how his brother fell.
"He's probably fallen 150ft. His chute has semi-inflated just before he hit the rocks, so luckily he wasn't descending at 100 miles an hour," the spokesman said.
The victim was fully conscious and communicating with crew during the flight.
Auckland Hang Gliding and Paragliding Club president Graham Surrey described Maori Bay as a popular spot for gliding. "It's a site that's not particularly tricky in the right conditions, but I am not sure what's caused this particular incident."
He said the accident was worrying and would be followed up by the club's safety officer and reported to the New Zealand Hang Gliding and Paragliding Association.
"It's not a very good situation, but that will be followed up with an accident report through the national organisation once the pilot is able to substantiate what has happened."
He said despite the high-risk nature of the extreme sport, it was highly regulated and there were few accidents.
"There's a certain level of risk we have to acknowledge when undertaking it but all of the pilots out flying have to go through proper training and [must] be licensed to fly."
Pilots were required to obtain a PG-2 licence from a certified training school, and undergo at least 40 hours of flights from different sites, he said.
The pilot was in a stable condition in hospital last night.
