Commercial jetmakers have booked few large orders at the Singapore Airshow, suggesting a deeper downturn than previously forecast. Some observers note that the global credit crisis has affected the ability of airlines to finance new planes. "Just like in the home mortgage sector, airlines need to put more equity into financing aircrafts. This will have a cash strain on the airline industry," International Lease Finance Corp. CEO Steven Udvar-Hazy said. Airbus and Boeing posted strong orders in 2007 and are expecting fewer orders in 2008.