Is this evidence that there isn't much interference from at least Tablets on airplanes?

I was told once by a former member of the FCC that the claims about electronic interference from cell phones and other devices is simply false. Anyway, this article at CNET caught my eye.

Starting this Friday, American Airlines is expected to start using iPads in all phases of flight operation, replacing hefty paper charts and manuals.
That's according to a report today from CNET sister site ZDNet, which says that American has received U.S. Federal Aviation Administration approval to use Apple's tablets at any time during a flight.