Auckland Council has pulled down all 56 sets of T-bar swings at parks across the city, after a 20-year-old set on Waiheke Island toppled while a child was using it.
All swings in parks were inspected annually, the Council's chief operating officer Dean Kimpton told NZME. But the damage on the inside of the set that fell over was missed during inspections.
"It was metal fatigue. Unfortunately there was nothing on the outside, so our regular inspection didn't spot it."
Engineers were inspecting all similar sets to make sure they didn't have a similar problem to the set that broke.
Sets with any issues would be replaced with a new type of swing, Kimpton said.