Originally Posted by
Tchiowa
Actually they do.
Airlines don't make laws.
Actually it does. As long as the rule doesn't violate some other law.
"It's enforceable, unless it's not enforceable." = "It's not necessarily enforceable."
Actually they can and the CoC definitely says that.
"b) UA reserves the right in its sole and absolute discretion to determine the suitability and place of storage of any items to be carried in the cabin of the aircraft.
c) UA reserves the right to check a Passenger’s Carry-on Baggage for any reason,"
Nowhere does it say they can CHARGE you for checking it though.
I can fit my guitar in some overhead bins. But it would take all the space above 2 rows and no other passenger in those seats could use the space. So, yes, it is perfectly logical for the airlines to say "while 1 of your bags would fit just fine, if every passenger brought the same size bag then there would not be near enough room. So we are going to restrict the size."
I was referring to the bins accommodating taller and deeper bags than the size allows.
Interestingly, the most important dimension, width, is the one least constrained by the sizer.