Crash investigators believe the propeller fell off a plane mid-flight before a fatal crash at Ōtaki.
Residents are now being asked to keep an eye out for a propeller.
A pilot was killed when his Sonex amateur-built fixed wing aircraft crashed in Hautere on the Kāpiti Coast last week.
The crash happened between 12.45pm and 1.15pm on Monday, August 17.
![The crash wreackage. Photo / Palmerston North Rescue Helicopter](https://www.nzherald.co.nz/resizer/v2/EABBPGM5SODC64MK6U3T5U2OP4.jpg?auth=534e0e0d92e7a327703e3edd8a3760a0812468ca8ad27dea4b2d190892f81628&width=16&height=22&quality=70&smart=true)