I think the truth is that the aircraft/aircraft systems manufacturers and mobile phone manufacturers just *don't know* to what type and extent interference, if any, is caused.

However, because mobile phones are radio transponders, there is a very real theoretical risk of interference with navigational and radio systems on board aircraft. (And the fact that we're putting radio-wave (radiation!) emitters right next to our brains is where much of the concern over mobile phones' causing brain tumors arises, as well...).

Just because we don't know with a specific certainty as to which phones will affect what systems, to what degree or extent, does not eliminate the risk - however theoretical - of negative affect to aircraft systems.

I agree with the current posture the airlines are taking, whether FAA or FCC mandated (speaking of which, who cares? They're both "Federal"): To not tempt fate.

Further to this matter, may I remind us to be wary of what conversations we have on board or in public spaces on those phones. I recall an instance on a recent flight where some lady, who obviously worked in the human resources/recruiting field, was discussing a gentleman, by full name (and referenced frequently during the long conversation) about that gentleman's job search ("oh yes, it's still confidential at this point"), compensation history, family situation, etc.

As much as I find mobile phones valuable, there is an aspect to their use which demands responsibility for when and how they're used.

Let's not become so enamored with the relative novelty of the devices (they're just telephones, after all), that we forget the employment of common sense and courtesy in their use.

[This message has been edited by FQTV (edited 05-24-2000).]