When eyjafjallajökull erupted in march 2010, ash plumes drifted southeast over europe and, as a result, the controlled airspaces over many european countries were closed to air traffic, stranding thousands of people worldwide. why would flying a commercial jet through a cloud of volcanic ash be dangerous?

According to the statement "when eyjafjallajokull erupted in March 2010, ash plumes drifted southeast over Europe and, as a result, the controlled airspaces over many European countries were closed to air traffic, stranding thousands of people worldwide." The reason why flying a commercial jet through a cloud of volcanic ash would be dangerous are the ash impairs visibility, clogs engines, and abrades engine parts.

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