They are a cross between a helicopter and a microlight and they attracted enthusiasts from throughout the country to Whanganui at the weekend.
The city hosted a midwinter meeting of the New Zealand Auto Gyrocopter Association.
Club member Garry Belton, from Marton, said club members met regularly in Dannevirke in summer.
"We just thought we'd have a midwinter meeting to tide us over until next summer, and it's been quite successful.
"Hopefully it will become a regular event," Mr Belton said.