This report describes recent trouble-shooting results in aircraft engineering concerning a self-induced fault mechanism of a hydraulic servo-valve. It presents a possible root cause for past aircraft accidents and as such helps to avoid such malfunction and its fatal consequences in the future.

Dr.-Ing. Seung is an Aircraft Engineer with emphasis on Aerodynamics, Flight Mechanics, System Technology and Hydraulics. He is also a Public-Funding Manager for Aeronautics Research Programs of the German Federal Ministry for Economic Affairs and Energy.