Originally Posted by
FlightDetent
How many seats per bin there, for 180Y? I reckon 7,5 >> 11 pounds each.
I can't think of any narrow-body that has enough bin space for a carry-on per seat.
A standard ICAO bag (when there was such a thing) is 45cm wide, so the passengers in a triple would need around 55 inches of bin, i.e. considerably more than the seat pitch. Or, put the other way round, on a full flight fewer than 60% of passengers will have space overhead for a carry-on.