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As travelers around the world battle with days of canceled flights and disrupted travel plans, another war between the airlines and air safety authorities is beginning.
Commercial European flights continued to be disrupted for a fifth straight day as the UK Civil Aviation Authority told CNN that there were still detectable levels of ash in the air.
A spokesman from NATS, the British air traffic control provider also said that it would not lift restriction on air travel in the current circumstances.
This is despite growing pressure from air travel groups such as the International Air Transport Association (IATA) and major airlines that are criticizing the tough restrictions.
Several airlines including British Airways have recently conducted test flights and have said that the aircraft sustained no damage.
British Airways' Chief Executive Willie Walsh said: "The analysis we have done so far, alongside that from other airlines' trial flights, provides fresh evidence that the current blanket restrictions on airspace are unnecessary.
"We believe airlines are best positioned to assess all available information and determine what, if any, risk exists to aircraft, crew and passengers."
However, some test flights by military planes have indicated that the ash cloud does indeed damage aircraft.
Several Finnish Air Force F-18 Hornet fighters that flew training missions over northern Finland last Thursday morning showed physical damage to parts of the plane.
A post-landing inspection revealed accumulations of powdery volcanic dust in the aircraft’s air intakes, according to a Ministry of Defense statement.
Imagery obtained indicated that even a short-duration flight inside an ash cloud may cause substantial damage to aircraft engines.
We want to know what you think.
Would you be confident enough to fly through an ash cloud? Are you still too scared to fly?