[ “It was absolute carnage. There was no warning. We just fell into a freefall zone, and before we knew it, we were on the ceiling and then bang, on the ground.”]
From other reports it was stated that the "No Seatbelt" sign was turned on. What I have not seen however is any mentioning of for how long it was turned on before the major turbulence. Was it a few seconds or a minute? That makes quite a difference.