The FAA currently has about 1,100 employees — from pilots to lawyers — using computer tablets, has future plans for an app store, and now plans to broadly expand the use of iPads within the agency, according to its tech group. The FAA currently allows employees to use iPads to read and send e-mail or documents, and does not allow the devices to be used to access FAA networks. But that is scheduled to change.
But you still have to turn it off during take off and landing. Via TUAW