Originally Posted by
ajax
By that logic, there should be no problem in using one's BlackBerry whilst still taxiing, right?
Originally Posted by
TechnoOenology
AFAIK the restriction on electronic devices is no longer because they 'interfere with the aircraft systems' - it's because using a phone (or an ipod etc for that matter) stops you hearing safety instructions. Which is why we're not supposed to be wearing headphones at those times either...
Yes, the aircraft communications equipment is adequately shielded to prevent cell phones, laptops and other electronic devices from causing interference. However there is no absolute certainty, there is no 100% guarantee from the company that installed the shielding that all RF signals will not cause interference.
Since take off and landing are the most crucial part of the flight the only way to guarantee that RF interference with the aircraft comms system is minimised, is to request that all electronic devices are turned off.
The reason it's all devices is because FAs don't have the time to check the technical specs of everyones mp3 player, game boy, phone etc... to see whether or not it would cause interference.
Even when GSM pico cells and wifi are available on every plane, you can still be assured that these services will be turned off during take off and landing.