NO Thunderstorms???
BOAC
"wallybird - I would ask you to carefully read both the current and old threads on this topic? Your fixation on 'thunderstorms' is out of place based on what we are told by BEA. There is also no firm 'evidence' of any 'thunderstorms' on their route.
There is no evidence that they 'penetrated' or flew near a 'thunderstorm'."
BOAC
Forget the threads. Read AF447: A Meteorological Analysis.
EVERY professional pilot KNOWS that a line of thunderstorms lay in the flight path of this flight. And every one I know stated "Why didn't they deviate?"
Some may be benign. Others may not.