Police say two men were lucky to escape with moderate injuries after their microlight stalled and crashed on takeoff near Hamilton on Tuesday.
They say the crash happened at a private airfield on the city's southern outskirts at 11.20am.
Firefighters had to cut the men free from the wreckage.
The pair have been taken to Waikato Hospital with serious and moderate injuries.
A guard has been placed at the site of the wreckage and the Civil Aviation Authority will investigate.