BBC rapporterar att flera branchorganisationer tycker att restriktionerna är överdrivna:
The two airline bodies, ACI Europe and AEA, said: "The eruption of the Icelandic volcano is not an unprecedented event and the procedures applied in other parts of the world for volcanic eruptions do not appear to require the kind of restrictions that are presently being imposed in Europe."
...
Steven Verhagen, vice-president of the Dutch Airline Pilots Association, told the Associated Press news agency: "In our opinion there is absolutely no reason to worry about resuming flights."
Vad jag förstår så grundar dom detta delvis på testflygningarna som genomförts hittills.