The bill that gives a nod to federal aviation spending over the next five years passed the U.S. House but has yet to take flight in the Senate. The Federal Aviation Administration reauthorization bill includes changes to airline ticket fees, and safety upgrades. But critics say the bill falls short in one area: improving the nation’s air traffic control system, which they say is under strain as the industry expands to accommodate more and more passengers. Commercial air carriers have been pushing to move the nation’s air traffic control system from radar to GPS.

Click the audio player above to hear the full story.