The new policy is in effect as of October 6 Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice American Airlines has announced it is changing one of its rules for carry-on baggage in an attempt to make the boarding process quicker. Starting Monday, the airline will be