When Flying, Hold That Call!

A new study suggests that the rule about turning off electronic devices on airplanes may have some merit.

Researchers led by Carnegie Mellon University say cell phones or laptops may disrupt cockpit operations, especially global positioning devices that are increasingly being used to help land planes safely.

Researchers monitored radio emissions from passengers on three airlines with the support of the Transportation Security Agency.

Carnegie Mellon's Granger Morgan says the disruptions are enough to impact a plane's navigation or other systems.

But he also says there's never been an accident clearly caused by electromagnetic interference.

The researchers recommended that the Federal Aviation Administration and Federal Communications Commission work together to investigate in-flight use of cell phones.