Hello Ettore,
Thanks for the link.
To me two important things stand out in this older case:
1. Once again it was the techies causing failures during ops time (also a not unimportant factor in the Überlingen case).
2. Most of the crews were favourably impressed with the controllers' handling of the problem. (Eine überwiegende Mehrheit der Flugbesatzungen, die zur Zeit des Radardatenausfalls mit der Flugverkehrsleitung Zürich in Verbindung standen, äusserte sich positiv über die Handhabung des Flugverkehrs durch die ATC während des Ausfalls.)
In the case which lead to this thread, it was the politicians who led to a precipitate reversal in policy. The controllers had to make the best of it.
Ask Napoleon what happens when an army has to reverse direction - cannons at the back and the cookhouse up front...
FC.