Please....If I take the time to respond to your messages then please do me the courtesy of reading what I have written.

When I wrote the following:-

"Mobile phones, as an example, transmit a signal which increases in power until it finds a (ground) station. Flying at 35,000 feet this will almost certainly mean that the mobile phone is transmitting at max output. Now consider (as the FAA authorities have to) if all passengers on a 747 use their phone together, the radio interference can and will cause problems for the aircrafts vital systems."

there is nothing here that states or even hints at this statement being the result of any study.

I hardly believe that the NASA report can be classed as generic. It is very specific and very detailed.

As for Wikipedia, while I agree this is not the definitive source of all knowledge it is independent and covers a range of references from scientific to very basic TV journalistic reporting.