The rules concerning the right for pilots to change country of representation have been changed. Every pilot entering a Category 1 competition must show his Sporting Licence. The country issuing the Licence is considered to be the country that pilot is flying for. If a pilot wants to fly for another country, he will have to be issued a sporting licence by his new NAC only after notification to his former NAC. He will also have to observe a two calendar years delay without flying in any Category 1 competition. Only then he can switch his or her allegiance. In other word, this pilot will not be able to participate in another Category 1 competition until two calendar years have passed. However he can fly in Category 2 competitions during those 2 years.