Some controllers have been overworked, while a federal watchdog recently claimed that 50 systems are outdated.

If they don't crash first, say government auditors The Federal Aviation Administration's (FAA) air traffic control (ATC) systems are perilously out of date, but don't expect replacements anytime soon,

A report by the Government Accountability Office said that the agency’s heavy reliance on the systems could jeopardize the safety and efficiency of the nation’s airspace.