Aviation Accident Summary CHI91DEV05

GREENVILLE, IL, USA

Aircraft #1

N22VV

ULLMAN VARI VIGGEN

Analysis

AN OWNER BUILT EXPERIMENTAL AIRPLANE EXPERIENCED SEPARATION OF THE WOODEN PROPELLER DURING CLIMB FROM TAKEOFF. EXAMINATION OF THE FAILED ATTACHMENT BOLTS SHOWED THE NUTS HAD BOTTOMED AGAINST THE UNTHREADED SHANK WHILE CLINCHING THE PROPELLER HUB TO ITS FLANGE.

Probable Cause and Findings

IMPROPER MAINTENANCE INSTALLATION OF THE PROPELLER.

 

Source: NTSB Aviation Accident Database

Get all the details on your iPhone or iPad with:

Aviation Accidents App

In-Depth Access to Aviation Accident Reports