ATCC Semmerzake is the Belgian Military ATC Unit. It is equipped with a modern ATC system that contains amongst others an APW application. However, there are a number of deficiencies in the APW system, which reduces its effectiveness as a safety net.This document describes the actions undertaken and the results achieved. It forms a Case Study in applying the guidance material that supports the EUROCONTROL Specification for APW, and as such is guidance material in its own right.