Ash clouds threaten air traffic

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I blogged on this topic a couple of times over the last month. People might be interested in http://www.abnormaldistribution.org/...-volcanic-ash/ , http://www.abnormaldistribution.org/...ic-ash-part-2/ and http://www.abnormaldistribution.org/...-volcanic-ash/

There are pictures of what looks like severe ash damage to a Citation engine circulating on the Internet. They are horrendous. If they are genuine, they will silence our sceptics. Does anyone have a provenance for those pictures?

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