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Eyjafjallajökull

Uff ... what a weekend. A relatively small volcano in Iceland blows ashes over the Atlantic (after all, the Icelanders have now ever again "ash", hahaha) sinks and Europe in the travel chaos. Over the whole lot was already reported by all news sites and channels in detail and verbloggt the web.

fact, almost too late, but what the heck, I'll also contribute my two cents. This is more of an opinion article.

The question for days hanging around in space: the flight ban is justified? This can hardly be generally well answered. In general, the balance between economic damage and danger to human life an extremely tricky in the skin of the decision would not stick me.

In the hustle and bustle is the call for more test flights louder. Even on weekends, there were several of them in Europe, with different results

Scientists from Wiltshire who have been making test flights into the volcanic ash cloud say the decision to close UK airspace is not an over-reaction. BBC.

completely incomprehensible I find the action of Lufthansa, to make a handful of test flights and then to proclaim proudly, nothing happened, so everything is ok. What? Even with Lufthansa, there should be really an understanding of statistics and scientific methods.

Imagine, a mathematician wants to find the probability of winning the lottery, bought a single Losschein, loses, and notes: "! The probability is 1 to infinity, zero percent no one can ever win the jackpot"

Even with a probability of accidents by 1-1 million of the airspace would be far too unsafe. In a day 20 000 flights in Europe that would mean, every day new Russian roulette with 1:50 for the Jackpot - I would not want to fly. In short: Three test flights and wipe afterwards with his finger over the window and look at whether what is left hanging - this is not science!

The aircraft launched today as perhaps the DLR can provide better answers. have worked Hats off to employees who, day and night to make preparations - which usually swallow several weeks - in a single weekend to perform. If everything works, it could already give evaluations for the German air space.


The problem is not necessarily the cloud itself, but the fact that there are few limits or experience with engines. Even if the cloud first measure has well - without a sense of how much could they harm an engine, is only a guide. The two known injuries from the 80 found in each place at very high densities of ash - but for two events can still be long build any statistics. My gut feeling tells me that the airspace over Germany is probably safe enough. But gut feelings are not always good advice - and as long as uncertainties prevail, absolute care is definitely the best way.