A week after this site predicted confusion over a proposed new standard size for carry on bags IATA (International Air Transport Association) has had second thoughts. It is "pausing the rollout of its "Cabin OK" initiative and beginning a comprehensive reassessment in light of concerns expressed, primarily in North America. "Cabin OK" is the logo IATA wants luggage manufacturers to attach to bags which meet its proposed maximum dimensions of 21.5 x 13.5 x 7.5 inches. The association represents most of the world's significant carriers, One of its largest members, British Airways, accepts bags measuring 22 x 18n x 10 inches including handles, pockets and wheels (it’s not clear whether or not the IATA proposal includes these). Tom Windmuller, it’s senior vice president for airport, passenger, cargo and security, says: "Interest in the Cabin OK programme has been intense. While the value of this initiative has been welcomed by many, including a growing list of airlines expressing interest in the programme, there has also been much confusion. Our focus is on providing travellers with an option that would lead to a simplified and better experience. This is clearly an issue which is close to the heart of travellers. We need to get it right." One thing is crystal clear. Airlines need to give passengers plenty of advance warning if they are to reduce the acceptable size of bags from the present norm. They won't win any friends if customers have to go out at short notice and sped money on new ones.