|Quoting Gonzalo (Thread starter):|
AF flight 406, on approach to Santiago de Chile, 306 souls on board, encountered severe turbulence at FL 180,
If this was "descending through FL
180", it means somewhere over the Argentinean-Chilean border, in the middle of the Andes mountains. It is a well known area for turbulence, hence every time I have flown that leg the crew warned all passengers to get back to their seats and put the seat-belts on. Since AF
is flying that same route every day now, I would like to think that the crew was well aware of that and/or they have been made aware of this fact, but maybe it was a crew unfamiliar with this route. Beware that the crossing of the Andes during descent brings you right along the Aconcagua mountain (22,831 ft), so you get pretty close to the surrounding mountains.
This is what it looks like:
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