Originally Posted by
jcwoman
I was wondering something along those lines as well, and thought maybe it was a safety issue to not have more than 3 seats in a row. In an emergency you'd have to possibly climb over two people. In a 5-seat middle section, that middle guy would have to climb over two people in either direction. I wonder if that's considered the safe maximum number of "bodies" to climb over?
It's not a question of bodies to climb over. It's a question of how many people can squeeze through the aisle to the exits in the time available. Higher throughput needs fatter pipes.
The a380 was approved with two aisles I don't think it would be feasible to consider a single aisle design.