Europe's airlines and airports question flight bans.
Europe's air industry has called for an urgent review of flight bans imposed because of volcanic ash from Iceland.
The bodies representing most European airlines and airports have questioned the need for the unprecedented curbs, which affect millions of travellers.
Airlines that have carried out test flights say planes showed no obvious damage after flying through the ash.
EU Transport Commissioner Siim Kallas said he hoped 50% of Europe's airspace would be risk-free on Monday.
He said the current situation was "not sustainable" and European authorities were working to find a solution that did not compromise safety.
We cannot just wait until this ash cloud dissipates," he added.
Mr Kallas also said EU transport ministers would hold a video teleconference on Monday to assess the situation. About 17 European countries have closed their airspace.
http://news.bbc.co.uk/2/hi/europe/8628323.stmEurope's air industry is really worried how much they lost and hundreds thousands passengers around the world are stuck in airports,hotels,etc.so angry customers eat them alive soon if nothing happen.