Boeing Capital is exploring opportunities for Islamic finance in the aviation sector and the possibility of including aircraft finance in the Islamic sukuk market. This way, an aircraft finance portfolio would be secured by an instrument known as the Enhanced Equipment Trust Certificate. Since 2006, Boeing Capital has hosted annual airline planning seminars for financiers in the Middle East. Emirates Airlines has issued sukuk most recently in 2015 compromising of a 10 year sukuk for the value of $913 million. Guaranteed by the UK Government, the sukuk was priced on 25 March at 2.471%. Emirates also issued in 2013 a $1 billion sukuk 10 year sukuk which was priced at 3.875%. Ethihad Airlines issued a sukuk in November 2016 for $1.5 billion which was priced at 3.86%.