Ignition Override reminded me of an eastbound sector over the Atlantic, some years ago, in a TAP B707, and five hours of moderate to occasional severe turbulence. I was in the very last row getting hammered and received light bruising from the constant banging into the armrests. Near the end of the flight when things calmed down I went up front for a chat with the crew. When I asked how they would categorise the turbulence we experienced they described it as "light"!! I suggested that next time we swap places!