The April-May 2010 Eyjafjallajökull eruption has had a tremendous unprecedented impact on civil aviation all over Europe and beyond resulting in millionaire economic loss and large social impact, especially during the 14-20 April week. The Organizing Committee of the COV6 meeting, held in Tenerife (Canary Islands, Spain) during 31 May-4 June 2010, scheduled an open Forum aimed at joining scientists and different actors that were directly or indirectly involved in the crisis. The idea was to stimulate an open discussion and to analyze the flaws detected in the current strategy used for mitigating ash plume hazard.