<P> Business Class, First class passengers and holders of high level mileage club members are often allowed to carry on a second bag of the same size and weight, or a smaller size and weight . </P> <P> On smaller sized aircraft, sometimes the hand baggage can be carried to the aircraft door, where it is collected by baggage handlers for stowing in the cargo area and returned to the passenger right after landing . </P> <P> Following the increase in restrictions imposed on flights from UK airports and to the USA after the events of August 2006 transatlantic aircraft plot, hand baggage on such flights was restricted to one cabin bag no bigger than 45 cm × 35 cm × 16 cm effective since 15 August . On 21 September 2006, the British Airports Authority advised that from the following day, the allowable size of the single item of hand baggage on outgoing flights from the UK would be increased to 56 cm × 45 cm × 25 cm (approx. 22 in × 17.75 in × 9.85 in), the IATA guideline size . Most UK airports remain to have a strict limit of one piece of cabin baggage per passenger, including business class (allowed two pieces of cabin baggage within Europe, excluding flights to and from the UK). </P> <P> A common regulation for cabin baggage restrictions was introduced on 6 November 2006 in European Union and in Switzerland, Norway and Iceland . </P>

What is 15 x 30 cm in inches