Ah, I see where the misunderstanding came from. In my "this reads like a fairly classic inflight turbulence encounter" "classic" was not meant to say it w

Ah, I see where the misunderstanding came from. In my "this reads like a fairly classic inflight turbulence encounter" "classic" was not meant to say it was something necessarily common, but something that is well understood happens, with a high enough probability of being encountered in the lifetime of an airframe. Case-in-point being the Emirates flight from December, with similar ceiling damage, and similar passengers/crew injuries.