He said his plane soared rather high and he lost track of it.
"I saw it coming down and I found most of it, but this part we could not find. It landed rather a long way from where we were flying on Tararua Road."
He reckons somewhere a kilometre or two into the air the plane must have tilted and damaged its wing.
"It probably lost its thermal lift and came crashing down."
He's had the plane for a year or two and built it himself, and he said it can be easily fixed.
The Levin Model Aeroplane Club flies from a local farmer' paddock every Saturday and Sunday from 8.30am until about lunchtime, said club member John Curtis.
"We fly everything from vintage planes to aerobatics, gliders and drones. It is a safe place to fly."
The club has about 40 members and is holding a minor championship on March 23 and 24.
For more on the local club ring John Shorer, 06 362 6313.