Why is there a ban in the first place?
The airline industry and the Federal Aviation Administration worry that electromagnetic waves emitted by passengers' personal electronic devices — including MP3 players, laptops, tablets, and cellphones — could interfere with an aircraft's electronic controls, or avionics. Commercial pilots file dozens of reports every year detailing how their radios, GPS navigation systems, and collision-avoidance boxes suddenly went haywire, but began functioning again when passengers were asked to check that all their devices were turned off. That kind of...
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