The Otago Daily Times understands a rabbit hole may have been responsible for upending a plane.
The pilot suffered moderate injuries from the crash at an airstrip in Cromwell at 1.30pm.
A police spokeswoman said reports suggested the Vans RV-7A aircraft had experienced a ''hard landing''.
A St John spokesman said one person was taken to the Cromwell Medical Centre with moderate injuries.
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The aircraft is registered to a Balclutha owner.