Some technical information about the planes:
A330 cabin width - 5.28m (17.33 ft)
A350 cabin width - 5.61m (18.4 ft)
A380 cabin width, upper deck - 5.8m (19.03 ft)
A380 cabin width, main deck - 6.5m (21.3 ft)
777 cabin width - 5.96m (19.6 ft)
Originally Posted by
crazycrab955
The 77W cabin is substantially larger than the A380 upper deck, so the 2006 J seats had to be modified and narrowed to fit into to the A380 cabin.
0.17m (6.84 inch) difference between the A380 upper deck and a 777.
Originally Posted by
crazycrab955
Similar thing has happened with the A350, which is a much smaller/narrower cabin than the 77W. The 2013 J seats have had to be modified to be shoehorned into the cabin.
0.37m (14.4 inch) difference between A350 and 777.