Airports in the U.S. need $71.3 billion over five years to expand, rebuild and upgrade terminals, runways and other infrastructure, an Airports Council International-North America, or ACI-NA, survey says. Released on Jan. 29, the report says that while large and medium hubs have funds secured or expected for 65% of capital needs, small hubs have 81% of funds committed or expected.

The total is down 11% from ACI-NA's 2011 survey, but the group says the average $14.3 billion a year outpaces income from federal Airport Improvement Program (AIP) grants and passenger facility charges (PFCs). AIP aid is important for small hubs, providing 48% of committed funds. Bonds, some backed by PFCs, are the big hubs' main funding source.